The system of linear inequalities to model the situation is 10x + 20y ≤ 100 and y > 2x
How to create a system of linear inequalities to model the situationFrom the question, we have the following parameters that can be used in our computation:
Each finished schedule = $10Each meeting = $20Amount to make = Not more than $100You must make more than twice as many schedules as meetingsUsing the following representations:
x = the number of schedules madey = the number of meetings completedWe have the following system of inequalities from the given statements
10x + 20y ≤ 100
y > 2x
Hence, the system of inequalities is 10x + 20y ≤ 100 and y > 2x
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In geometry, what might be the consequences of an unjustified or inaccurate conclusion?
Answer:
Step-by-step explanation:
In geometry, an incorrect conclusion within a proof might lead to wrong estimations of size, length, and other spatial properties. It can cause disastrous outcome in real world. Especially when lives are involved, such as space shuttle projects, or building constructions .
The cost of 6 tennis balls in a sports store is $4.60. Wyatt bought 9 tennis balls from the store. What is the cost of 9 tennis balls?
Answer:
$6.90 is the cost of 9 tennis balls
How would I solve this? (y-z) ÷ z y=-2 and z=4/5
Answer:
-3.5
Step-by-step explanation:
The problem you have stated is (y-z)/z where y=-2 and z = 4/5. To solve, substitute the values of y and z into the problem. Then, you have (-2-4/5)/4/5. (-2-4/5) simplifies to -14/5 so then you have (-14/5)/4/5. To divide, multiply -14/5 by 5/4 {multiplying by the reciprocal}. That equals -70/20 which is equal to -3.5
Answer:
\(\large\boxed{-3.5}\)
Step-by-step explanation:
(y - z) ÷ z y = -2 and z = 4/5
Substitute in the given values for y and z into the equation
(y - z) ÷ z
(-2 - 4/5) ÷ 4/5
Subtract inside the parenthesis (-2 - 4/5)
-2.8 ÷ 4/5
Convert 4/5 into a decimal (in this case that can be done by multiplying both the numerator and denominator by 20)
4/5 = (4 * 20) / (5 * 20) = 80 / 100
80 / 100
Divide numerator and denominator by 10
8/10 = 0.8
Substitute into previous equation
-2.8 ÷ 4/5 = -2.8 ÷ 0.8
Divide
\(\large\boxed{-3.5}\)
Hope this helps :)
Somebody who is good at math (mostly polynomials) please help answer this question. Will appreciate it!
Find all the errors and and write the corrections beside it. Describe where jack went wrong in a sentence too if possible!
(WILL MARK BRAINLIEST WHOEVER CAN ANSWER CORRECTLY AND FASTT) :D
Step-by-step explanation:
jack has error in 0 and -5x
Find the value of x in the triangle shown below.
15
х
9
Answer:
x=12
Step-by-step explanation:
\(x^{2}\)=\(15^{2}\)-\(9^{2}\)
\(x^{2}\)=225-81
\(x^{2}\)=144 /sqrt
x=12
Please Answer This Question!
Answer: x=25
Step-by-step explanation: equation comes out to
4x+80=180
4x=100
x=25
Answer:
x=25
Step-by-step explanation:
x+30+x+40+2x+10=180
Add the X up together and the other number which will be
4x+80=180
subtract 80 from both sides
4x=100
divide 4 from both sides
x=25
In one large city, 80% of all residents have a motor vehicle, 60% have a bicycle, and 50% have both.
What's the probability that a randomly selected resident has a motor vehicle or bicycle?
Answer:
90%
Step-by-step explanation:
(80% + 60% - 50%)
Answer:
The probability of having a motor vehicle is 80%, the probability of having a bicycle is 60%, and the probability of having both is 50% (a half chance).
Probability (motor vehicle or bicycle) = Probability (motor vehicle) + Probability (bicycle) - Probability of both
Probability (motor vehicle or bicycle) = 80% + 60% - 50%
Probability (motor vehicle or bicycle) = 90%
Therefore, the probability that a randomly selected resident has a motor vehicle or bicycle is 90%.
Please help now asap !!!!
Simplify √-45 please i need this for math to pass
Answer:3√5
Step-by-step explanation:
√ 45 = 3√5. Therefore, the square root of 45 in radical form is 3√5. Square Root of 45 in Radical Form: 3√5.
Answer:
The answer is 3√5
Cindy spent $65.25 on ingredients for blueberry pies and $62.84 on ingredients for cherry pies.Each slice of pie sells for $3.50.Part A:Write an expression to represent Cindy's profit is she sells b slices of blueberry pie and c slices of cherry pie. Part B:Cindy sells 24 slices of blueberry pie and 15 slices of cherry pie. The next day, she sold 26 slices of blueberry pie and 17 slices of cherry pie. What was her total profit?
A) 3.5a +3.5b ≥ 128.09 B) Total profit: $158.91
1) Gathering the data
$65.25 ingredients for blueberry pies
$62.84 cherry pie
Each slice
3.50
A) Since Cindy's profit relies on her sales we can write
b = slices of blueberry
c = cherry pie slices
3.50b +3.50a ≥ 65.25+62.84
3.5a +3.5b ≥ 128.09
B) Gathering those data and adding the number of slices that were sold:
1st day
b= 24
a =15
2nd day
b=26
a=17
Plug into that:
Profit: 3.5(15+17) + 3.5(24+26)
P =287
$287 was the total revenue
Cherry pie cost of production 62.84
3.5(15+17)=112
Profit = 112 -62.84
Profit = $49.16
Blueberry cost of production: $65.25
3.5(24+26) =175
175 - 65.25 =109.75
Profit $ 109.75
Total profit: $158.91
En el salón de Esteban hay 28 alumna y solo han regresado a clases presenciales 45% de sus compañeros ¿cuantos alumnos faltan por regresar?
15 students are yet to return for the face to face classes
Given the following parameters
Total number of students in Esteban's classroom = 28 students
If 45% of classmates have returned to face-to-face classes, the total number of classmates that have returned to face-to-face classes is 0.45 * 28 = 12.6
People that are yet to return = 28 - 12.6
People that are yet to return = 15.4
This shows that about 15 students are yet to return for the face to face classes
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after fitting a linear regression model to a dataset, the model's slope and intercept are -3 and 0 respectively. now, if we change our independent variable by adding 4.5 units to x, what is the absolute value of the change in the predicted value of dependent variable y?
The absolute value of change in the predicted value of dependent variable Y is 18.
Any variable whose value is influenced by an independent variable is said to be dependent. The thing that is measured or assessed in an experiment or mathematical equation is the dependent variable. The phrase "the outcome variable" is another name for the dependent variable.
Slope = b = -4
Intercept = a = -2.8
So, the equation of the regression line is
y = a + bx
y = -2.8 - 4x ...Equation 1
Now suppose the value of x is changed by adding 4.5
i.e. put x = x + 4.5
So,
y = -2.8 - 4(x + 4.5)
y = -2.8 -4x - 18 ...Equation 2
Comparing 1 and 2 ,
We get the predicted value of dependent variable Y as 18
Therefore The absolute value of change in the predicted value of dependent variable Y is 18
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You are performing a two-tailed test.
If α=.002α=.002, find the positive critical value, to three decimal places.
zα/2 = use invNorm or invT in your calculator to find this value
You are performing a left-tailed test.
If α=.01α=.01, find the critical value, to three decimal places.
zα = use invNorm or invT in your calculator to find this value
Required critical value is 0.001.
For the two-tailed test with α = 0.002, you
need to find the positive critical value zα/2. To do this, use the invNorm function in your calculator:
1. Divide the alpha level by 2: 0.002 / 2 = 0.001
2. Find the corresponding z-score using invNorm: invNorm(1 - 0.001) = invNorm(0.999)
3. Round the z-score to three decimal places.
For the left-tailed test with α = 0.01, you need to find the critical value zα. To do this, use the invNorm function in your calculator:
1. Find the corresponding z-score using invNorm: invNorm(0.01)
2. Round the z-score to three decimal places.
After calculating the z-scores, your answer should look like this:
For the two-tailed test with α = 0.002, the positive critical value zα/2 is approximately 0.001 (replace with your calculated value). For the left-tailed test with α = 0.01,
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HELLO PLEASE HELP I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!
Answer: The exact distance between the 2 points is √2, but the approximate distance is 1.41421356 (repeating decimal)
Hope this helped :D
Find the 78th term of the arithmetic sequence 14,5, -4, ...
Answer:
-679
Step-by-step explanation:
14, 5, -4, ...
a = 14
d = 5 - 14 = -9
nth term = a + (n - 1) d
n(78) = 14 + (78 - 1) * -9
= 14 + 77(-9)
= 14 -693
= -679
answer
the formula is a+(n-1)d
a: the first term
d:the 2nd term -the first term
Need help on 2 questions
Question 1: Compared to last month, there was a 50% increase in the number of houses sold this month.
Question 2: the runners time to complete the marathon was 10% less than the time to complete the last marathon.
Use the picture as an example.
Answer:
oijfijfiosdoiviv
Step-by-step explanation:
Carolina needs a total of $6.50 in quarters for a coin-operated car wash. He already has $1.50. Which equation can be used to find g, the
additional quarters Carolina needs in order to have enough money for the car wash?
Answer: 20 quarters
Step-by-step explanation:
As we look at this problem we can convert $6.50 dollars into 26 quarters. Us already knowing that Carolina has $1.50 (6 quarters) we can take the two numbers and minus both of them. 26 quarters ($6.50) - 6 quarters ($1.50) = 20 quarters($5.00)
Step-by-step explanation:
every $ is equivalent to 4 quarters.
every half-$ is equivalent to 2 quarters.
after all, 1 quarter = $0.25.
so, the equation is
4×1.5 + g = 4×6.5
or simplified
6 + g = 26
and from there we get then immediately that
g = 20
Olivia Sells 1/8 ton of copper to recycle♻️. The recycler pays $4 per pound. How much money in dollars, does the recycler pays Olivia for her copper?
The total amount the recycler pays Olivia is $1000.
What is the total amount Olivia is paid?The weight of the copper is expressed as a fraction A fraction is a non-integer that is made up of a numerator and a denominator. The numerator is the number above and the denominator is the number below.
There is a need to convert tons to pounds:
1 ton = 2000 pounds
1/8 x 2000 = 250 pounds
The total amount that the recycler pays can be determined by multiplying the total pounds by cost per pound.
Total cost = cost per pound x total pound
250 x $4 = $1000
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an experiment consists of tossing 4 unbiased coins simultaneously. the number of simple events in this experiment is question 20answer a. 10 b. 8 c. 16 d. 25
The number of simple events in this experiment is 16.
The correct answer to the given question is option c.
The probability of an event can be calculated by dividing the number of favorable outcomes by the number of possible outcomes. A simple event is one in which only one of the outcomes can occur. For example, if a coin is tossed, a simple event would be the outcome of the coin being heads or tails.
The total number of possible outcomes in the experiment of tossing 4 unbiased coins simultaneously is 2⁴, since there are two possible outcomes for each coin. Thus, the total number of possible outcomes is 16.
Each coin has two possible outcomes: heads or tails. If all four coins are flipped, there are two possible outcomes for the first coin, two possible outcomes for the second coin, two possible outcomes for the third coin, and two possible outcomes for the fourth coin. Therefore, the total number of possible outcomes is 2 × 2 × 2 × 2 = 16.
Therefore, the number of simple events in this experiment is 16, which is option (c).
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determine the smallest integer value of x in the solution of the following inequality
4x-9>=17
Step-by-step explanation:
4x - 9 ≥ 17
4x ≥ 17 + 9
4x ≥ 26
4x/4 ≥ 26/4
x ≥ 13/2
x ≥ 6.5
4x + 2y = 10
x - y = 13
can someone solve this for me step by step please????
Answer:
(6,-7)
Step-by-step explanation:
if you plug it in:
24-14=10
6+7=13
for the second one, if you have two minuses(6 - -7) you have to switch it to a plus sign (6+7)
hope this helps! :)
Here is how you would solve this system of equations.
\(\begin{bmatrix}4x+2y=10\\ x-y=13\end{bmatrix}\)
Step 1: Multiply x-y=13 by 4.
\(\begin{bmatrix}4x+2y=10\\ 4x-4y=52\end{bmatrix}\)
Step 2: Subtract the equations.
\(4x-4y=52\)
-
\(\underline{4x+2y=10}\)
\(-6y=42\)
\(\begin{bmatrix}4x+2y=10\\ -6y=42\end{bmatrix}\)
Step 3: Solve -6y=42
\(y=-7\)
For 4x+2y=10 plug in y=-7
\(4x+2(-7)=10\)
Simplify.
\(4x-14=10\\4x-14+14=10+14\\4x=24\\x=6\)
Therefore, x=6, y=-7.
Hope this helps.
Which answer shows 0.00897 written in scientific notation?
0.897 times 10 Superscript negative 2
8.97 times 10 Superscript negative 3
8.97 times 10 Superscript negative 2
8.97 times 10 Superscript 3
Answer:
8.97 × 10-3
Step-by-step explanation:
you move the decimal so its a number between 1 and less than 10 so we moved the decimal three spaces.
Answer:
its B
Step-by-step explanation:
The height of a building in a drawing is 15 inches at the actual height of the building is 165 feet find the scale factor of the drawling
165 ft / 15 inches = 11
scale = 1 inch = 11 feet
which is written as 1:11
math helpp ..........
Answer:
12 is the relation
Step-by-step explanation:
if you multiply 12 by your y factor you get your x fator
adults found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 14 hours. The population standard deviation is 3 hours. What is the margin of error for a 95% confidence interval
The margin of error for a 95% confidence interval is 0.263.
What is normal distribution?A probability distribution which is symmetric about the mean is the normal distribution, sometimes referred to as the Gaussian distribution. It demonstrates that data that are close to the mean occur more frequently than data that are far from the mean.
The probability bell curve is more properly described as the normal distribution.The mean and standard deviation of a normal distribution are 0 and 1, respectively. It has an outlier of 3 and zero skew.Not everyone symmetrical distributions are normal, but all normal distributions are symmetrical.The formula for margin of error is ;
ME = (z × σ) / √ n
The confidence interval is 95% = 0.95.
Mean (σ) =14
standard deviation = 3.
Total population (n) = 500
Substitute the values in the formula;
ME = (z × σ) / √ n
= (1.96 × 3)/√500
= (1.96 × 3)/22.36
ME = 0.263
Therefore, the margin of error for a 95% confidence interval is 0.263.
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The complete question is -
A study of five hundred adults found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 14 hours. The population standard deviation is 3 hours. What is the margin of error for a 95% confidence interval?
limℎ→0(9+ℎ)−1−9−ℎFind solutions lim h→0 (9 + h)−1 − 9−1 h
The solution to lim h→0 (9 + h)−1 − 9−1 h is -1/9.
To find the solution to lim h→0 (9 + h)−1 − 9−1 h, we can simplify the expression first.
Starting with (9 + h)−1, we can use the formula for the difference of squares to get:
\((9 + h)-1 = (9 + h - 9) / ((9 + h)(9 - 9)) = h / (9h + h^2)\)
Substituting this back into the original expression gives:
\((9 + h)-1 -9-1 h = h / (9h + h^2) - 1 / 9h\)
We can combine the two fractions by finding a common denominator of 9h(9 + h), giving:
(9h - (9 + h)) / (9h(9 + h)) = -1 / (9 + h)
Now we can take the limit as h approaches 0:
lim h→0 (9 + h)−1 − 9−1 h = lim h→0 -1 / (9 + h) = -1 / 9
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an emergency room nurse believes the number of upper respiratory infections is on the rise. the emergency room nurse would like to test the claim that the average number of cases of upper respiratory infections per day at the hospital is over 21 cases. using the computed test statistic of 2.50 and the critical value of 2.33, is there enough evidence for the emergency room nurse to reject the null hypothesis?
To determine whether there is enough evidence to reject the null hypothesis, we need to compare the computed test statistic to the critical value.
In this case, the computed test statistic is 2.50 and the critical value is 2.33. If the computed test statistic falls in the rejection region beyond the critical value, we can reject the null hypothesis. Conversely, if the computed test statistic falls within the non-rejection region, we fail to reject the null hypothesis.In this scenario, since the computed test statistic (2.50) is greater than the critical value (2.33), it falls in the rejection region. This means that the observed data is unlikely to occur if the null hypothesis were true.
Therefore, based on the given information, there is enough evidence for the emergency room nurse to reject the null hypothesis. This suggests that there is sufficient evidence to support the claim that the average number of cases of upper respiratory infections per day at the hospital is over 21 cases.
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There is enough evidence to reject the null hypothesis in this case because the computed test statistic (2.50) is higher than the critical value (2.33). This suggests the average number of daily respiratory infections exceeds 21, providing substantial evidence against the null hypothesis.
Explanation:Yes, there is enough evidence for the emergency room nurse to reject the null hypothesis. The null hypothesis is typically a claim of no difference or no effect. In this case, the null hypothesis would be an average of 21 upper respiratory infections per day. The test statistic computed (2.50) exceeds the critical value (2.33). This suggests that the average daily cases indeed exceed 21, hence providing enough evidence to reject the null hypothesis.
It's crucial to understand that when the test statistic is larger than the critical value, we reject the null hypothesis because the observed sample is inconsistent with the null hypothesis. The statistical test indicated a significant difference, upheld by the test statistic value of 2.50. The significance level (alpha) of 0.05 is a commonly used threshold for significance in scientific studies. In this context, the finding suggests that the increase in respiratory infection cases is statistically significant, and the null hypothesis can be rejected.
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what is the answer (−10/12) x5/7
The answer of the expression (-10 / 12) × ( 5 / 7) is -0.595.
Given,
The expression = (-10 / 12) × (5 / 7)
We have to solve this using arithmetic operations
Arithmetic operations:
Arithmetic is the fundamental study of numbers in mathematics. The four fundamental operations in mathematics are addition, subtraction, multiplication, and division, but exponentiation and the extraction of roots are also included.
Solve:
(-10 / 12) × (5 / 7)
- 0.833333333 × 0.714285714
= -0.595238095
≈ -0.595
That is, the answer of the expression (-10 / 12) × (5 / 7) is -0.595
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Given right triangle
�
�
�
ABC with altitude
�
�
‾
BD
drawn to hypotenuse
�
�
‾
AC. If
�
�
=
6
AD=6 and
�
�
=
24
,
DC=24, what is the length of
�
�
‾
?
BD
?
In right angled triangle ABC when altitude BD is drawn on the hypotenuse AC then length of AB is equal to 12.
In right angled triangle ABC,
AC is the hypotenuse.
Angle B is right angle.
BD is the altitude drawn on hypotenuse AC.
AD = 6
AC = 24
⇒DC = AC - AD
= 24 - 6
= 18
Triangle ABD and ΔBCD are right angle triangle .
ΔABD is similar to ΔABC.
Corresponding sides of similar triangles are in proportion.
AD/ BD = BD/CD
⇒BD² = DC ×AD
⇒BD = √18 × 6
⇒BD = 6√3
In ΔABD,
AB is the hypotenuse, ∠ADB is the right angle.
AB² = AD² + BD²
⇒ AB² = 6² + 108
⇒ AB = √144
⇒ AB = 12
Therefore, the length of AB in the given right triangle is equal to 12.
The above question is incomplete, the complete question is:
Given right triangle ABC with altitude BD drawn to hypotenuse AC. If
AD = 6 and AC = 24, what is the length of AB?
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A circle with radius of 2 cm sits inside a circle with of 4 cm
Answer:
Diameter is equal to twice the radius. Given, radius is 4 cm. Diameter = 2(4) = 8 cm. Hence, diameter of the circle with radius as 4 cm is 8 cm.
Step-by-step explanation:
please
give brianliest
Answer: Area = 0
Step-by-step explanation:
((2*2)*3.14)-(4*3.14) = 0