Step-by-step explanation:
please mark me as brainlest
please help I will give you brainliest
Answer:
Both the line right before the 2 and the line right before the one
Step-by-step explanation:
Levi is planning a road trip. He throws a dart on a map of the United States to decide where to go. There are 4 states that start with the letter A, 3 states that start with the letter C, and 8 states that start with the letter M. What is the probability that Levi throws a dart on a state that starts with an A or an M? (Hint: There are 50 total states.)
P(A∪M)=
1) 0.01
2) 0.24
3) 0.64
4) 0.42
Answer:
since there are 4 states that start with A and 8 that start with M, this means that out of the 50 states there are 12 states that he could throw a dart at and get either A or M, meaning that 12/50 is the fraction and 12/50 converted into a percentage or decimal is 0.24 meaning that 0.24 is the probability that he throws a dart and hits a state that starts with an A or M
mike walks 3 miles per hour for 5 hours
Answer:
18
Step-by-step explanation:
when constructing a confidence interval for the mean of a distribution based on one sample, how is confidence level determined?
Constructing a confidence interval for the mean of a distribution based on one sample is Confidence level = 1 - significance level.
The definition of the confidence level is (1-α). Zα is the number of standard deviations from the mean at which X with a certain probability lies. If Z = 1.96 is selected, the likelihood that the real mean falls inside the range is set at 0.95, hence we are asking for the 95% confidence interval.
Let us consider,
Confidence level = c
significance level \(= \alpha\)
\(c = 1 - \alpha\)
Fore more such question on confidence level.
https://brainly.com/question/29634773
#SPJ4
please help! will mark brainliest!
Answer:
-12x²
General Formulas and Concepts:
Pre-Algebra
Distributive PropertyAlgebra I
Function NotationCombining Like TermsFactoringExpanding by FOIL (First Outside Inside Last)Calculus
Evaluating LimitsDefinition of a Derivative: \(f'(x)= \lim_{h \to 0} \frac{f(x+h)-f(x)}{h}\)Step-by-step explanation:
Step 1: Define
\(f(x) = 1 - 4x^3\)
Step 2: Differentiate
Substitute [DOD]: \(f'(x)= \lim_{h \to 0} \frac{[1-4(x+h)^3]-(1-4x^3)}{h}\)Expand: \(f'(x)= \lim_{h \to 0} \frac{[1-4(x^3+3hx^2+3h^2x+h^3)]-(1-4x^3)}{h}\)Distribute: \(f'(x)= \lim_{h \to 0} \frac{1-4x^3-12hx^2-12h^2x-4h^3-1+4x^3}{h}\)Combine like terms: \(f'(x)= \lim_{h \to 0} \frac{-12h^2x-4h^3-12hx^2}{h}\)Factor: \(f'(x)= \lim_{h \to 0} \frac{h(-12hx-4h^2-12x^2)}{h}\)Divide: \(f'(x)= \lim_{h \to 0} -12hx-4h^2-12x^2\)Evaluate: \(f'(x)= \-12x^2\)A triangle has an area of 300 square inches. The height of the triangle is 12.5 inches. What is the
base of the triangle?
A:24 inches
B:48 inches
C:12 inches
D:30 inches
Answer:
C Base x Height ÷ 2. 300 ÷ 2 = 150. 150 ÷ 12 .5 is 12.
PLEAZE HELPP 50 POINTS If the function f(x) =-3x3 +7x represents the movement of a whale in meters what is the average rate of change of the whale for x=1 and X=3 seconds label your answer
Answer:
The average rate of change of a function over an interval is found by taking the difference between the function's values at the endpoints of the interval and dividing by the length of the interval. In this case, we have:
f(1) = -3(1)^3 + 7(1) = -3 + 7 = 4
f(3) = -3(3)^3 + 7(3) = -27 + 21 = -6
The average rate of change over the interval from x=1 to x=3 is therefore (-6 - 4) / (3 - 1) = -10 / 2 = -5.
To label your answer, you could write something like: "The average rate of change of the whale's movement over the interval from x=1 to x=3 seconds is -5 meters/second."
Can i get some help :
The store owner is adding cost, so we will use addition. The answers should be as follows:
[] c + $3.49 = $9.84
[] c = $6.35 <- subtract $3.49 from both sides of the equation
[] Solution of answer represents the old cost of the toy.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Can anyone help?? Basic algebra-
Answer:
-7x+4y=15
Perpendicular lines have slopes with a product of -1
Step-by-step explanation:
please help asap! thank you so much! Select the correct answer.
What is the complete factorization of x2 + 4x - 45?
OA. (x + 15)(x-3)
OB. (x-9)(x+5)
OC. (x + 9)(x-5)
OD.
(x- 15Xx+3)
the answer is C. (x+9)(x-5)
Answer:
The answer is C :)
Step-by-step explanation:
My sis is yelling at me to do her questions and I’m doin my art homework, I’m trying to be focused and uh yeah can someone help her lol
Answer:
lol 4.15
Step-by-step explanation:
Answer:
Here you go:)
So this is relatively simple ok, after this you will be a master of adding decimals.
Easy Answer: Think of it as a regular three digit + three digit addition problem.
Imagine the decimal points aren't there. So, the answer is 4.15
________
Answered by James
Step-by-step explanation:
7.9x – 2 – 3.2x – 10 = 2.8 + x
Answer:
x=4
Step-by-step explanation:
combine like terms
divide to get the x by itself
1 louis rose his bicycle 1/2km to school 3/4 km to a ball field and 7/10 km home
Louis total distance of 8/5 km. Louis rose his bicycle a total distance of 8/5 km.
Louis rose his bicycle a total distance of 1/2 km + 3/4 km + 7/10 km.
To find the total distance, we need to find a common denominator for the fractions: 2, 4, and 10.
The least common denominator is 20.
So, 1/2 km can be written as 10/20 km, 3/4 km can be written as 15/20 km, and 7/10 km remains the same.
Adding these fractions together, we have:
10/20 km + 15/20 km + 7/10 km = 32/20 km
Simplifying this fraction, we get:
32/20 km = 8/5 km
Therefore, Louis rose a total distance of 8/5 km.
Two know more about distance visit:
https://brainly.com/question/15172156
#SPJ11
Louis rode a total distance of 8/5 km or 1 and 3/5 km
Louis rode his bicycle a total of 1/2 km to school, 3/4 km to a ball field, and 7/10 km back home. To find the total distance Louis traveled, we need to add up these three distances.
First, let's add 1/2 km and 3/4 km. To add fractions with different denominators, we need to find a common denominator. The least common multiple of 2 and 4 is 4.
Converting 1/2 to have a denominator of 4, we get 2/4. Now we can add 2/4 + 3/4, which equals 5/4.
Next, we need to add 5/4 km and 7/10 km. To add fractions with different denominators, we need to find a common denominator. The least common multiple of 4 and 10 is 20.
Converting 5/4 to have a denominator of 20, we get 25/20. Now we can add 25/20 + 7/10, which equals 32/20.
To simplify this fraction, we can divide both the numerator and denominator by their greatest common divisor, which is 4. Dividing 32/4 and 20/4, we get 8/5.
Learn more about least common multiple
https://brainly.com/question/30060162
#SPJ11
Help ill mark u brainliest
answer:
8x - 16 + 5x + 15 = 90
and
8x - 6 + 18x + 4 = 180
A rectangular storage container without a lid is to have a volume of 10 m3. The length of its base is twice the width. Material for the base costs $15 per square meter. Material for the sides costs $9 per square meter. Let w denote the width of the base. Find a function in the variable w giving the cost C (in dollars) of constructing the box. C(w) = Find the derivative of C. C'(w) = Find the cost (in dollars) of materials for the least expensive such container. (Round your answer to the nearest cent.)
The cost function is C(w) = 300/w + 18w² and the cost of materials for the cheapest such container is $222.0
The function for constructing the cost of the boxFrom the question, we have the following parameters that can be used in our computation:
The length is twice the width;
Volume = 10m³
This means that:
V = 10
l = 2w
The volume of the container is calculated as:
V = lwh
So, we have
v = 2w²h
By substitution, we have
h = v/2w²
So, we have
h = 10/2w²
Divide
h = 5/w²
The surface area of an open rectangular storage is:
A = 2h(l + w) + lw
So, we have
A = 2h(2w + w) + 2w²
A = 2h(3w) + 2w²
Substitute h = 5/w²
A = 2 * 5/w² * (3w) + 2w²
Evaluate
A = 20/w + 2w²
The base costs $15, and the sides cost $9
So, the cost function is:
C(w) = 15 * 20/w + 2w² * 9
Rewrite as:
C(w) = 300/w + 18w²
The least cost of the materialsWe have
C(w) = 300/w + 18w²
Differentiate
C'(w) = -300/w² + 36w
Set to 0
-300/w² + 36w = 0
Rewrite as:
-36w = -300/w²
Cancel out the negatives
36w = 300/w²
Multiply through by ²
36w³ = 300
Divide through by 36
w³ = 8.33
Take cube roots of both sides
w = 2.03
Recall that:
C(w) = 300/w + 18w²
So, we have:
C(2.03) = 300/2.03 + 18(2.03)²
Evaluate
C(2.03) = 222.0
Hence, the cost of the materials is $222.0
Read more about minimizing functions at:
brainly.com/question/12313753
#SPJ1
5 7/8 + 1 1/3 =
Im confused
\(-4(3x+1)+x-3=15\)
\(x = - 2\)is the answer
Explanation -
\(-4(3x+1)+x-3=15\)
\( = > - 12x - 4 + x - 3 = 15\)
\( = > - 11x - 7 = 15\)
\( = > - 11x = 15 + 7\)
\( - 11x = 22\)\( = > x = - \frac{22}{11} \)
\( = > x = - 2\)
~ Benjemin360
\(-4(3x+1)+x-3=15\)
start using the method PEMDAS
(parenthesis, exponents, multiplication, division, addition, subtraction)
so,
start with multiplying since its the third option to start with
\(-12x-4+x-3=15\)
now add like variables
\(-11x-7=15\\\)
continue by changing the signs to the other side +7 on both sides
\(-11x=22\)
now divide 11 on both sides
\(\frac{22}{-11}\) equals to negative 2
Answer : \(-2\)
Hope this helps~
A jet travels 490 miles in 5 hours. At this rate, how far could the jet fly in 12 hours? What is the rate of speed of the jet?
Answer: 1,176 miles
Step-by-step explanation:
490 / 5 = 98 miles
98 mph X 12 hours is 1,176
Your firm uses a continuous review system and operates 52 weeks per
year. One of the SKUs has the following characteristics. Refer to
the standard normal table for z-values.
PLEASE ANSWER SECTIONS
Certainly! You didn't provide the characteristics of the SKU, but here is a general answer that includes the terms "continuous" and "characteristics."Your firm uses a continuous review system and operates 52 weeks per year.
A continuous review system is a perpetual inventory system in which the inventory level for an item is continuously monitored, and a reorder is generated when the inventory level reaches a particular point, known as the reorder point (ROP).
As for the characteristics of an SKU, this can include various factors such as demand, lead time, safety stock, and so on. In order to determine the optimal reorder point and the order quantity for an SKU, you need to consider the characteristics of that particular item.
As for the standard normal table for z-values, this is used to determine the probability of a random variable taking a value within a certain range. The table is typically used in statistics and probability courses and can be used to determine probabilities for a variety of continuous distributions.
To know more about the word probability visits :
https://brainly.com/question/31828911
#SPJ11
Help please, I need this done pretty much right away
The length of the rectangular plot is 125 ft.
How to find the side of a right triangle?The side of a right angle triangle can be found using Pythagoras's theorem as follows:
Therefore, the length of the rectangular plot can be found as follows:
c² = a² + b²
where
a and b are the legsc = hypotenuse sideTherefore,
l² = 325² - 300²
l² = 105625 - 90000
l = √15625
l = 125 ft
Therefore,
length of the rectangular plot = 125 ft
learn more on right triangle here: brainly.com/question/33650492
#SPJ1
evaluate the expression x+4x-3+3x^2-2x when x = 5
Given:
The expression is
\(x+4x-3+3x^2-2x\)
To find:
The value of given expression when x=5.
Solution:
We have,
\(x+4x-3+3x^2-2x\)
Substituting x=5 in the above expression, we get
\(=(5)+4(5)-3+3(5)^2-2(5)\)
\(=5+20-3+3(25)-10\)
\(=5+20-3+75-10\)
On further simplification, we get
\(=(5+20+75)+(-3-10)\)
\(=100+(-13)\)
\(=100-13\)
\(=87\)
Therefore, values of the given expression at x=5 is 87.
Write the number.
10 ones
4 tens
3 hundreds
Answer:
350
Step-by-step explanation:
It is 350 because 10 ones is 10, 4 tens is 40, and 3 hundreds is 300 if you add them up you get 350.
The required number is 350 which represents 10 ones, 4 tens
and 3 hundred.
What is a numerical expression?A numerical expression is algebraic information stated in the form of numbers and variables that are unknown. Information can is used to generate numerical expressions.
We have been given information as
10 ones
4 tens
3 hundred
As per the given question,
Translate the information into an algebraic expression:
It's 350 since 10 ones are 10, 4 tens are 40, and 3 hundred is 300 when added together.
⇒ 1 × 10 + 4 × 10 + 3 × 100
⇒ 10 + 40 + 300
⇒ 350
Therefore, the required number is 350 which represents 10 ones, 4 tens
and 3 hundred.
To learn more about numerical expression click here :
https://brainly.com/question/6037813
#SPJ2
Linda got a prepaid debit card with $20 on it. For her first purchase with the card, she bought some bulk ribbon at a craft store. The price of the ribbon was 14 cents per yard. If after that purchase there was $17. 06 left on the card, how many yards of ribbon did Linda buy?
Therefore, Linda bought 21 yards of ribbon. Hence, Linda bought 94 yards of ribbon.
The number of yards of ribbon Linda bought, we need to calculate the difference between the initial balance on the card and the remaining balance after the purchase.
The initial balance on the card was $20. To find the amount spent on ribbon, we subtract the remaining balance ($17.06) from the initial balance. $20 - $17.06 = $2.94
Now, we need to determine how many yards of ribbon Linda could purchase with $2.94, given that the price of the ribbon is 14 cents per yard.
To find the number of yards, we divide the total amount spent ($2.94) by the price per yard (14 cents): $2.94 ÷ $0.14 = 21
Therefore, Linda bought 21 yards of ribbon.
Hence, Linda bought 94 yards of ribbon.
Learn more about yards
https://brainly.com/question/14516546
#SPJ11
Mandy used the rule “Add 6” to make a pattern. She started with 20 and wrote the next 5 numbers in her pattern. Which number does NOT belong in Mandy’s pattern?
Answer:
43
Step-by-step explanation:
Answer:
43
Step-by-step explanation:
Well, I used the process of elimination at first. I realized that the numbers that mattered in the question were even numbers therefore the only one that would not end in the even number once I added "6" to the next 5 numbers, would be number 43.
IQ test scores are standardized to produce a normaldistribution with a mean of 100 and a standarddeviation of 15. Find the proportion of the popula-tion in each of the following IQ categories.Gartea. Average or normal intelligence: IQ from 90 to 109
The mean, µ = 100
The standard deviation, σ = 15
At X = 90, the z-score is calculated below
\(\begin{gathered} z=\frac{X-\mu}{\sigma} \\ \\ z=\frac{90-100}{15} \\ \\ z=-\frac{10}{15} \\ \\ z=-0.67 \end{gathered}\)At X = 109
\(\begin{gathered} z=\frac{109-90}{15} \\ \\ z=\frac{19}{15} \\ \\ z=1.27 \end{gathered}\)P(90 < X < 109) = P(-0.67 < z < 1.27)
From the standard normal
P(-0.67
The proportion of the population with IQ from 90 to 109 = 0.64653 x 100% = 64.65%
For the rhombus below, find the measures of angles 1, 2, 3, and 4.
The measure of angles inside the rhombus are:
∠1 = 56
∠2 = 56
∠3 = 34
∠4 = 34
We have,
In a rhombus,
The opposite angle is congruent.
So,
(56 + 56) = ∠1 + ∠2
And,
∠1 and ∠2 are equal angles.
So,
112 = 2∠1
∠1 = 56
∠2 = 56
Now,
All four angles in side the rhombus = 360
112 + 112 + ∠x + ∠x = 360
2∠x = 360 - 224
2∠x = 136
∠x = 68
This ∠x is the angle inside the rhombus.
And, ∠x/2 = ∠3 = ∠4
So,
∠3 = 68/2 = 34
∠4 = 34
Thus,
The measure of angles inside the rhombus are:
∠1 = 56
∠2 = 56
∠3 = 34
∠4 = 34
Learn more about Rhombus here:
https://brainly.com/question/27870968
#SPJ1
Complete the expression that represents the prime factorization of 492.
Type the factors in the increasing order.
492 = 2 × 2×
×
Answer:
The prime factors of 492 are 2, 3, 41.
Step-by-step explanation:
→ 492 = 2 × 2 × ? × ?
→ 492 = 2 × 2 × 3 × 41
Let's check,
→ 492 = (2 × 2) × (3 × 41)
→ 492 = 4 × 123
→ 492 = 492
→ LHS = RHS
Hence, prime factors of 492 are 2, 3, 41.
If two lines represent the same line, then what is the nature of its solution?
Step-by-step explanation:
If a consistent system has exactly one solution, it is independent . If a consistent system has an infinite number of solutions, it is dependent . When you graph the equations, both equations represent the same line. If a system has no solution, it is said to be inconsistent .
Answer:
Infinite
Step-by-step explanation:
Solution between 2 lines is considered the point of their intersection. Now, since two lines are same (not only parallel but same), it tends to have infinite solutions.
Let the predictor variable x represent heights of males and let response variable y represent weights of males. A sample of 154 heights and weights results in se = 16.49232 cm. In your own words, describe what that value of se represents Choose the correct answer below. O A. The value of s, is the standard deviation of e, which is a measure of the differences between the observed weights and the weights predicted from the regression equation OB. The value of s, is the standard deviation of e, which is a measure of the differences in standard deviations for the two samples OC. The value of s, is the standard error of the estimate, which is a measure of the differences in standard deviations for the two samples. OD. The value of s, is the standard error of the estimate, which is a measure of the differences between the observed weights and the weights predicted from the regression equation.
The correct option is D that is the value of se represents the standard error of the estimate, which is a measure of the variability of the errors in predicting the response variable (weights) from the predictor variable (heights) using the regression equation.
Specifically, se represents the standard deviation of the residuals, which are the differences between the observed values of the response variable and the values predicted by the regression equation. A smaller value of se indicates that the regression equation provides a better fit to the data and that the predictions of the response variable are more accurate.
To know more about standard deviation,
https://brainly.com/question/23907081
#SPJ11
Samir is going to invest $22,000 and leave it in an account for 9 years. Assuming the interest is compounded monthly, what interest rate, to the nearest tenth of a percent, would be required in order for Samir to end up with $38,000?
The interest rate required to get a total amount of $38,000.00 from compound interest on a principal of $22,000.00 compounded 1 times per year over 9 years is 9.0909 % per year.
What is the interest rate?The amount a lender charges a borrower is called an interest rate, and it is expressed as a percentage of the principal, or the loaned amount. Typically, a loan's interest rate is expressed as an annual percentage rate, or APR .
r = n[(A/P)1/nt - 1]
r = 1 × [(38,000.00/22,000.00)1/(1)(9) - 1]
r = 0.0909090
Then convert r to R as a percentage
R = r × 100
R = 0.0909090 × 100
R = 9.0909 %/year
The interest rate required to get a total amount of $38,000.00 from compound interest on a principal of $22,000.00 compounded 1 times per year over 9 years is 9.0909 % per year.
To learn more about compound interest here:
brainly.com/question/24274034
#SPJ1
Answer: 6.1
Step-by-step explanation: