Janet, Rosi, and Tanya buy postcards from their favorite souvenir shop Janet buys 3 postcards for $1.05 Rosie by five postcards for $1.75 Tanya Buys eight postcards for $3.80 are the cost why in dollars and the numbers of postcards extra personal explain your answer right in equation to represent the relationship if possible
Answers
Answer:
Total Amount spent on all the cards = $ 42.3
No of cards = 16 .
Step-by-step explanation:
The cost is calculated by multiplying the number of items with their costs. As we have different costs for each card we will add the costs of different cards to get the total costs.
Janet buys 3 postcards for $1.05.
Janet spends 3* $1.05= $ 3.15
Rosie buys five postcards for $1.75
Rosie spends 5 * $ 1.75= $ 8.75
Tanya buys eight postcards for $3.80
Tanya spends 8 * $3.80 = $ 30.4
Total Amount spent on all the cards = $ 3.15+$ 8.75+$ 30.4= $ 42.3
No of cards = 3 + 5+ 8= 16 cards were bought .
Related Questions
PLEASE SEE PIC BELOW
Answers
3. Check for Reasonableness Two students are
asked to write an equivalent algebraic expression
for (5v-3)2. Chen writes the equivalent algebraic
expression as 25v-6. Mia writes the equivalent
25 Who is correct?
algebraic expression as
V6
Answers
None of Chen and Mia have got the solution right for the given expression.
It is given that two students are asked to write an equivalent expression for (5v - 3 ) × 2.
We have to find out that which of the both students have got it correct ?
What is algebra ?
Algebra is the branch that deals with various symbols and the arithmetic operations such as addition , division , etc.
As per the question ;
The expression is (5v - 3 ) × 2.
Let's solve this equation to find out who of Chen and Mia is correct.
So ;
(5v - 3) × 2
= (5v × 2) - (3 × 2)
= 10v - 6
So ; None of Chen and Mia is correct.
Thus , none of Chen and Mia have got the solution right for the given expression.
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Answer: Both Chen, and Mia are correct.
Step-by-step explanation:
The expression they gave us:
(5v^-3)^2.
Mia: 25/v^e
Chen: 25v^1
Now,
5v^-3)^2
Step 1: (5v^-3).= (5^2)v^3x2
Step 2: (5x5)v^3x2=25v^3x2
Step 3: 25v^-6. As you see Chen is correct. But..
Step 4: 25/1 x 1/v^6= 25/v^6
That also makes Mia to be correct.
So, in this problem there are two answers.
= 25v^-6, and 25/v^6.
A genetic experiment with peas resulted in one sample of offspring that consisted of 475 green peas and 193 yellow peas. Find the 94% confidence interval to estimate the percentage of yellow peas. It was expected that 25% of the offspring peas would be yellow, do the results contradict the expectations? Round to the hundredths place of a percent-do not enter the % symbol.
Answers
Given:
Number of green peas = 475
Number of yellow peas = 193
Let's find the 94% confidence interval to estimate the percentage of yellow peas.
Where:
Total number of peas = 475 + 193 = 668
For the sample proportion, we have:
\(\begin{gathered} p^{\prime}=\frac{194}{668} \\ \\ p^{\prime}=0.2889 \end{gathered}\)For a 94% confidence interval, the significance level will be:
1 - 0.94 = 0.06
For the critical value, using the z-table, we have:
\(z_{\frac{\alpha}{2}}=z_{\frac{0.06}{2}}=z_{0.03}=1.881\)Now, to find the 94% confidence interval, apply the formula::
Where:
To find the margin of error E, we have:
\(E=z_{\frac{\alpha}{a}}*\sqrt{\frac{p^{\prime}(1-p^{\prime})}{n}}=1.881*\sqrt{\frac{0.2889(1-0.2889)}{668}}=0.032987\)Thus, we have:
\(\begin{gathered} p^{\prime}-EHence the confidence interval will be:
Lower limit = 0.2559 ==> 25.59%
Upper limit = 0.3219 ==> 32.19 %
The confidence interval does not contain 0.25, hence we can say that the true results contradicts the expectations.
ANSWER:
The confidence interval does not contain the expectation of 25%, hence, the true results contradicts the expectation.
a tablet is on sale for 30% off. the regular price is $185. how much money will you save?
Answers
Answer:
185×30÷100=55.5
HERES YOUR answer
trying to help a friend
Answers
Answer:
SAS
Step-by-step explanation:
Bro it's right
It just is
A study of 12,000 able-bodied male students at the University of Illinois found that their times for the mile run were approximately Normal with mean 7.11 minutes and standard deviation 0.74 minute. Choose a student at random from this group and call his time for the mile Y.
(a) Write the event "the student could run a mile in less than 7.72 minutes" in terms of the value of the random variable Y. Use the symbols "<" or ">" as appropriate to indicate the bounds on Y.
(b) What is the probability of the event from part (a)?
Answers
A. The event "the student could run a mile in less than 7.72 minutes" can be written as Y < 7.72.
B. The probability that a randomly chosen student can run a mile in less than 7.72 minutes is approximately 0.7937.
(a) The event "the student could run a mile in less than 7.72 minutes" can be written as Y < 7.72.
(b) We need to find the probability that a randomly chosen student can run a mile in less than 7.72 minutes.
Using the standard normal distribution with mean 0 and standard deviation 1, we can standardize Y as follows:
z = (Y - mean)/standard deviation
z = (7.72 - 7.11)/0.74
z = 0.8243
We then look up the probability of z being less than 0.8243 using a standard normal table or calculator. This probability is approximately 0.7937.
Therefore, the probability that a randomly chosen student can run a mile in less than 7.72 minutes is approximately 0.7937.
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A triangle has sides with lengths of 6 meters, 12 meters, and 16 meters. Is it a right triangle?
Formula(a^2 +b^2=c^2)
Answers
Answer:
i'd say so
Step-by-step explanation: none of the sides are the same length as another
Hannah needs to calculate the cotangent of an angle. She uses the ratio
opposite leg
for her calculation. Did Hannah correctly calculate the cotangent of the angle?
adjacent leg
A
B.
Yes, Hannah correctly calculated the cotangent of the angle.
adjacent leg
No, Hannah should have used the ratio
opposite leg
hypotenuse
No, Hannah should have used the ratio
opposite leg
O c.
D.
No, Hannah should have used the ratio
adjacent leg
hypotenuse
Answers
Answer:
B. No, Hannah should have used the ratio \( \frac{adjacent}{opposite} \)
Step-by-step explanation:
✍️The formula for calculating cotangent of an angle is given as:
\( cot = \frac{adjacent}{opposite} \).
The ratio, \( \frac{opposite}{adjacent} \), used by Hannah is the formula for calculating tangent of an angle.
Therefore, Hannah did not calculate the cotangent of the angle correctly.
She should have used, the ratio, \( \frac{adjacent}{opposite} \) instead.
Plsss help meee 45 points plus brainliest
Answers
Hello There!!
Let us call X the equal distances GH = HI = IJ
GH = X
HI = X
IJ = X
Note that HJ = HI + IJ, so
HJ = X + X
10 = 2X
X = 5
Well, We're looking at figure we can conclude that:
GJ + JK = GK
GJ = GH + HI + IJ
GJ = 15
GJ + JK = GK
15 + JK = 24
JK = 9
GH = X = 5
HI = X = 5
IJ = X = 5
JK = 9
\(HopeThisHelpsYou!\)
\(_{Losersbrazts}\)
. The balance sheet of Trinagar Company for the subsequent two years is provided to you: Liabilities Year I (Rs.) 50,000 70,000 80,000 50,000 250,000 Share capital. Debentures... Creditors..... Retained earning.. Year I (Rs.) i. ii. iii. iv. 100,000 50,000 40,000 60,000 250,000 Additional information for year II: Sales Rs. 180,000. Cost of goods sold Rs. 100,000. Cash operating expenses Rs. 50,000. Dividend paid Rs. 5,000. V. Interest paid Rs. 5,000. Required: Cash flow statement. Year II (Rs.) 250,000 100,000 80,000 430,000 Assets Fixed assets at cost ... Stock Debtors.. Cash balance. CROA Year II (Rs.) 230,000 100,000 40,000 60,000 430,000
Answers
To prepare the cash flow statement, we can use the indirect method, which involves adjusting the net income figure for non-cash items and changes in working capital to arrive at the net cash flow from operating activities. Then, we can account for cash flows from investing and financing activities to arrive at the net change in cash and cash equivalents.
Cash flow statement applying indirect methodHere's the cash flow statement for Year II:
Cash flow from operating activities:
Net income: Rs. 30,000 (180,000 - 100,000 - 50,000 - 5,000 - 5,000)
Adjustments for non-cash items:
Depreciation: Rs. 30,000 (230,000 - 200,000)
Changes in working capital:
Increase in stock: Rs. 10,000 (100,000 - 90,000)
Increase in debtors: Rs. 20,000 (60,000 - 40,000)
Increase in creditors: Rs. 10,000 (80,000 - 70,000)
Net cash flow from operating activities: Rs. 100,000
Cash flow from investing activities:
Purchase of fixed assets: Rs. 30,000 (230,000 - 200,000)
Net cash flow from investing activities: Rs. -30,000
Cash flow from financing activities:
Repayment of debentures: Rs. 20,000 (50,000 - 30,000)
Payment of dividends: Rs. 5,000
Net cash flow from financing activities: Rs. -25,000
Net change in cash and cash equivalents: Rs. 45,000 (100,000 - 30,000 - 25,000)
Cash and cash equivalents at the beginning of the year: Rs. 60,000
Cash and cash equivalents at the end of the year: Rs. 105,000
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does anybody know how to solve this equation 5+3∣10−4x∣=20
Answers
x = 5/4 or x = 15/4
Step-by-step explanation:
2(10x+1)-3(4x-5)
Simplify
Answers
Answer:
8x+17
Step-by-step explanation:
20x+2-12x+15
8x+17
Answer:
\( = 8x + 17\)
Step-by-step explanation:
\( = 2(10x + 1) - 3(4x - 5) \\ = 20x + 2 - 3(4x - ) \\ = 20x + 2 - 12x + 15 \\ = 20x + 17 - 12x \\ = 8x + 17\)
What is the area of the figure? (PLSSS HELP QUICKLY!!)
Answers
Answer:
416 cm^2
Step-by-step explanation:
The formula for the area of a trapezoid is:
\(\frac{(b1+b2)*h}{2}\)
where b1 and b2 are the bases and h is the height. We can plug what we have into the formula:
\(\frac{(14 + 38)*16}{2}\)
\(\frac{(52)*16}{2}\)
\(52*8\)
416 cm^2
What is the slope of the line through (3, 2) and (-3, 4)?
5
(-3, 4)
4
(3, 2)
2
1
x
-3
-2
-1
1
2
3
4.
A. 3
B. - 1/3
C. 1/3
D. -3
Answers
Answer:
- 1/3
Step-by-step explanation:
What is the distance between points (5,2) and (1,-3) on the coordinate plane?
Answers
Answer:
6.403124
Step-by-step explanation:
For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 6 N acts on a certain object, the acceleration
of the object is 3 m/s². If the force is changed to 20 N, what will be the acceleration of the object?
00
8
X
Ś
PLEASEEEE HELPPP MEEEEEEE
Answers
When the object's acceleration reaches 6.67 m/s2, the force is 20 N.
The mass of an object determines the acceleration it experiences.
The force is 6 N if the object's acceleration increases to 3 m/s2.
Reason:
The parameters listed are;
The occupying force the object's acceleration.
The acceleration produced by a force, F, of 18 N is equal to 6 m/s2.
Newton's Second Law of Motion states that;
F = M × A
Where;
m = The object's mass
In light of the parameters, F = 18 N and a = 6 m/s2, we may determine the mass of the
the following is the provided object;
Weight = F/A
Therefore, the force acting when the acceleration is an is;
20 = 3 kg, where a = a = 6.67 m/s2.
When the object's acceleration reaches 6.67 m/s2, the force is 20 N.
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2. You expect next Saturday's sales revenue to be \( \$ \) (First 5 Digits of your Student ID). If your target labour cost percentage is \( 18 \% \), how much money can you spend on labour that day an
Answers
Given information: Expected sales revenue = $57756Target labour cost percentage = 18%To find: How much money can you spend on labour that day? Solution: Let's assume the amount that can be spent on labour is x. According to the question, Target labour cost percentage is 18%.
Therefore, the amount that will be spent on labour cost = 18% of expected sales revenue. So, we can write it as:
x = 18% of expected sales revenue orx
= (18/100) × 57756Simplify it
,x = 10396.08 (rounded to two decimal places)Thus, the amount that can be spent on labour that day is $10,396.08.
Shawna and Beatrice, by virtue of their status as the offerees, had the option of accepting or rejecting the offer. The acceptance must meet the requirements of a valid contract.
The acceptance must be communicated clearly and immediately. In addition, the acceptance must conform to the offer's terms. In Hyde v Wrench (1840), the court held that an acceptance must be unconditional and absolute and that if the acceptance is not in line with the terms of the offer, it is a counteroffer that terminates the original offer. Since Shawna and Beatrice had not yet responded to the offer, there was no acceptance of the contract. Therefore, there was no legal agreement between the parties as a contract must have both an offer and an acceptance in order to be considered valid.
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one student from the school will be selected at random. what is the probability that the student is in the age-group of 6 to 8 years given that the selected student responded joy?
Answers
Given that the chosen kid gave a joy response, the probability that the student belongs to the age range of 6 to 8 years is 28/89.
What is probability?The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty. The probability is computed by dividing the total number of possible outcomes by the number of possible ways the event could occur. Probability and odds are two distinct ideas. Odds are calculated by dividing the likelihood of an event by the likelihood that it won't.So, the likelihood that a pupil is between the ages of 6 and 8 can be calculated using the techniques below:
Step 1: 89 pupils out of a possible 200 answered with joy, as shown in the table.Step 2 - It is also stated that there were a total of 28 students in the age range of 6 to 8 years who answered positively.Step 3 - Accordingly, the likelihood that the pupil belongs to the 6 to 8-year-old age range is:P = 28/89
Therefore, given that the chosen kid gave a joy response, the probability that the student belongs to the age range of 6 to 8 years is 28/89.
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The complete question is given below:
Students at a local elementary school were shown a painting and asked which emotion—joy, happiness, love, or anger—they felt by looking at the painting. The students were classified by their age. The following table summarizes the responses of the students by age group. One student from the school will be selected at random. What is the probability that the student is in the age group of 6 to 8 years given that the selected student responded with joy?
please help me with this math problem
Answers
answer is flash 2.6 seat and into two equal to 7.28 only this is answer this can be helped you
Step-by-step explanation:
IAS IAS pre English please please please please please brain list
A pair of shoes usually sells for $60. If the shoes are 40% off, and sales tax is 5%, what is the total price of the shoes, including tax?
Answers
Answer:
$39
Step-by-step explanation:
We can solve this by finding 40% of $60 and the tax which is 5% of $60. We'll get 36 and 3. Add these up and you have an answer.
Have a great day!
At Dorothy's Hair Salon, 4 gallons of shampoo will last 3 weeks. She has 7 gallons of shampoo. How much more must she order if she wants to have enough for 12 weeks?
Answers
Answer: 4x4=16-7=9gallons
She will order 9 gallons
Step-by-step explanation:
a spherical tank has a radius of 15 m. a cylindrical tank has a radius of 15 m and a height of 20 m. what is the ratio of the volume of the spherical tank to the volume of the cylindrical tank?
Answers
The volume of a spherical tank with a radius of 15 m is calculated as 4/3πr3, or 4/3π × 153 = 14,137 m3.
The volume of a sphere is calculated using the formula V = 4/3πr³, where r is the radius.The volume of a cylindrical tank with a radius of 15 m and a height of 20 m is calculated as πr2h, or π × 152 × 20 = 11,309 m3.
Therefore, the ratio of the volume of the spherical tank to the volume of the cylindrical tank is 14,137/11,309 = 1.24.
This means that the spherical tank has 24% more volume than the cylindrical tank.
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Answer:
\(r = \sqrt{ \frac{v}{20\pi?} ?} \)
An employee earns a 12% commission rate on the cameras he sells. If he earns $384 in commission, what were his total sales?
Answers
Answer:
$3,200
Step-by-step explanation:
384/12= 32
32*100= 3200
Answer:
He earns $46.08 because that would be 12% of $384:)
Please answer correctly !!!! Will mark brainliest answer !!!!!!!!!
Answers
Answer:
D
Step-by-step explanation:
\((4x-7)^2+16=40x-70 \\\\(p)^2+16=10(p) \\\\p^2-10p+16=0\)
Hope this helps!
For the Adjusted R Squared, which of the following is true: a. Is the same R 2
as in the simple linear regression b. Can decrease if the addition of another X regressor does not lower SSR enough relative to the impact of the increase of k by another X regessor. c. Is between 0 and 1 d. Measures the ratio of the sum of squared residuals compared to the total sum of squares
Answers
The correct statement is c. The Adjusted R-squared is a measure used in multiple regression analysis that is between 0 and 1. It is different from the R-squared value in simple linear regression.
The Adjusted R-squared can decrease if the addition of another X regressor does not sufficiently lower the sum of squared residuals (SSR) relative to the impact of increasing the number of predictors (k). It measures the proportion of the variance explained by the predictors, adjusted for the number of predictors and the sample size, rather than the ratio of the sum of squared residuals to the total sum of squares. It provides a measure of how well the regression model fits the data, and it ranges between 0 and 1. A value closer to 1 indicates that a higher proportion of the variance in the dependent variable is explained by the predictors.
Adding another X regressor to the multiple regression model can impact the Adjusted R-squared. If the additional regressor does not significantly contribute to reducing the sum of squared residuals (SSR) relative to the increase in the number of predictors (k), the Adjusted R-squared can decrease. This means that the added regressor does not improve the model's ability to explain the variance in the dependent variable adequately.
However, the Adjusted R-squared does not directly measure the ratio of the sum of squared residuals to the total sum of squares. Instead, it represents the proportion of the variance explained by the predictors, adjusted for the number of predictors and the sample size. It penalizes models with a large number of predictors that may overfit the data, thereby providing a more reliable measure of the model's goodness of fit.
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Marcus wants to earn an "A" in math for the 4th quarter. His teacher is averaging 4 test grades. His grades on the first three tests are 85, 95, and 88. What grade does he need to earn on his 4th test to end up with an average of 90?
Answers
Answer:
87
Step-by-step explanation:
85+95+88+92 = 360
360/4 = 90
a sum of money was divided between rajeev and ashish so that rajeev gets 7/19 of the whole amount .if he gets ₹5600,how much was the total sum?
Answers
The total sum was x = ₹15200
A sum of money was divided between Rajeev and Ashish
Rajeev gets 7/19 of the whole amount.
and, if he gets ₹5600 money
Then, find the how much was the total sum ?
Now, Let the total sum of money be ₹x
and, Rajeev gets = 7/19 of whole amount
=> 7x/19 Rajiv gets money from the whole amount = ₹5600
According to the question :
7x/19 = 5600
7x = 5600 × 19
x = (5600 × 19) /7
x = 800 × 19
x = ₹15200
Hence, The total sum was x = ₹15200
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1 pizza costs $0.50 to make. They sell it for $12. Find the percent markup.
Answers
Answer:
ok let me try this again
To explain a markup, let's use an example: Let's say you purchase a box of paper that costs one dollar. You aim for a profit of 50%. By multiplying the cost by 50%, you get $0.50. This is your markup price. Add that to the price that you paid to purchase the box of paper, and now the total is $1.50. This is the selling price of the box of paper. Therefore, your markup percentage is 50%.
did that help i was not a faker though i was just trying to explain it to him/she better and can i have brainlist please
evaluate the expression \(( - 10){4} ( - 10){3} \)
Answers
solve 58÷4(6×9)+7(7×3)
Answers
58/4x54+7x21 =
783+7x21 =
783+147 =
930
Answer:
answers 930 ok I hope it help