Answer:
I think it is A (38.47)
Step-by-step explanation:
I believe this because I had a math qouiston like this and when I found this A was the only comen answer and when I clicked on my 38.47 I was right
There are 5 red markers, 2 orange markers, 3 yellow markers, and 5 green markers in a desk drawer. plss help
Answer:
15 markers in all
Step-by-step explanation:
5 + 2 + 3 + 5 =
5 + 5 = 10
+
2 + 3 = 5
=
10 + 5 = 15
Brainliest Please!!
hello there can anyone solve this plz (chart is attached):
correct answer gets brainliest
If h(x) = f[f(x)] use the table of values for f and f ' to find the value of h '(1)
Answer:
[tex]h^\prime(1)=14[/tex]
Step-by-step explanation:
We have the function:
[tex]h(x)=f[f(x)][/tex]
And we want to find:
[tex]h^\prime(1)[/tex]
So, we will differentiate function h. By the chain rule, this yields:
[tex]h^\prime(x)=f^\prime[f(x)]\cdot f^\prime(x)[/tex]
Then it follows that:
[tex]h^\prime(1)=f^\prime[f(1)]\cdot f^\prime(1)[/tex]
Using the table, we acquire:
[tex]h^\prime(1)=f^\prime(3)\cdot2[/tex]
And using the table again, we acquire:
[tex]h^\prime(1)=7\cdot 2[/tex]
Evaluate. Hence:
[tex]h^\prime(1)=14[/tex]
Mrs. Pregnals's biology classes are going on a field trip. She has them break into groups of three or four
students in order to do labs. She has a total of 120 students and 32 total groups are formed.
If i represents the number of three person groups and represents the number of four person groups, then
write a system of equations that models this situation.
Answer:
x + y = 32 (1)
3x + 4y = 120 (2)
x = 8; y = 24
Step-by-step explanation:
Total students = 120
Number of groups = 32
If the number of three person groups = x
Number of four person groups = y
write a system of equations that models this situation
x + y = 32 (1)
3x + 4y = 120 (2)
From (1)
x = 32 - y
Substitute x = 32 - y into (2)
3(32 - y) + 4y = 120
96 - 3y + 4y = 120
- 3y + 4y = 120 - 96
y = 24
Substitute y = 24 into (1)
x + y = 32
x + 24 = 32
x = 32 - 24
x = 8
x = 8; y = 24
3 less than the quotient of a number y and 4
Expression:
When y = 20, the value of the expression is
Please help ASAP!!
Step-by-step explanation:
3 less than the quotient of a number y and 4
= y/4 - 3.
When y = 20, y/4 - 3 = 20/4 - 3 = 2.
Find the value of k, if x + 3 is a factor of 3x² + kx + 6. *
PLEASE HELP!!!
Which of the following values could x represent in the bar diagram?
ABC or D?
9514 1404 393
Answer:
both C and D are correct
Step-by-step explanation:
The diagram shows that x is the total of $40 and 20% of $40.
Description A would be represented by the difference of $40 and 20% of $40, not the sum.
Description B would be represented by 20% of $40, not the sum of that and $40.
Both descriptions C and D are properly represented in the diagram.
Kate walks 5 miles in 2 hours at a steady pace. how far can she walk in 1 hour and 15 minutes? If answered, you get the brain crown thing
Answer:
2.8125 mile
Step-by-step explanation:
hope its right
Which statement describes the rate of change of the following function?
f(x) = -5x - 7
A.
The function has a varying rate of change when x < 7.
B.
The function has a varying rate of change when x < 5.
C.
The function has a constant rate of change, decreasing for all x at a rate of 7.
D.
The function has a constant rate of change, decreasing for all x at a rate of 5.
Given:
The function is
[tex]f(x)=-5x-7[/tex]
To find:
The rate of change of the given function.
Solution:
We have,
[tex]f(x)=-5x-7[/tex] ...(i)
It is a linear function because the degree or power of x in this function is 1.
Slope of a linear function is always constant.
The slope intercept form of a linear function is
[tex]f(x)=mx+b[/tex] ...(ii)
where, m is slope and b is y-intercept.
On comparing (i) and (ii), we get
[tex]m=-5[/tex]
It means, the function has a constant rate of change, decreasing for all x at a rate of 5.
Therefore, the correct option is D.
Plss answer!!
MERRY Christmas!!!
Critical Question. AAAAA
Answer:
Step-by-step explanation:
abc = 1
We have to prove that,
[tex]\frac{1}{1+a+b^{-1}}+\frac{1}{1+b+c^{-1}}+\frac{1}{1+c+a^{-1}}=1[/tex]
We take left hand side of the given equation and solve it,
[tex]\frac{1}{1+a+\frac{1}{b}}+\frac{1}{1+b+\frac{1}{c}}+\frac{1}{1+c+\frac{1}{a}}[/tex]
Since, abc = 1,
[tex]\frac{1}{c}=ab[/tex] and c = [tex]\frac{1}{ab}[/tex]
By substituting these values in the expression,
[tex]\frac{1}{1+a+\frac{1}{b}}+\frac{1}{1+b+\frac{1}{c}}+\frac{1}{1+c+\frac{1}{a}}=\frac{1}{1+a+\frac{1}{b}}+\frac{1}{1+b+ab}+\frac{1}{1+\frac{1}{ab}+\frac{1}{a}}[/tex]
[tex]=\frac{b}{b+ab+1}+\frac{1}{1+b+ab}+\frac{ab}{ab+1+b}[/tex]
[tex]=\frac{1+b+ab}{1+b+ab}[/tex]
[tex]=1[/tex]
Which equal to the right hand side of the equation.
Hence, [tex]\frac{1}{1+a+b^{-1}}+\frac{1}{1+b+c^{-1}}+\frac{1}{1+c+a^{-1}}=1[/tex]
In a school with 700 students, a survey revealed that 80% of the students liked the new lunch menu. Based on this data, how many students liked the new menu?
Answer:
560 students
Step-by-step explanation:
We are given that the total number of students is
700
The survey results is 80% likes the new lunch menu
We are expected to establish what amount of students is 80%
=80/100*700
=0.8*700
=560
Hence 80% of 700 is 560
solve the inequality for n 14
Answer:
14n
Step-by-step explanation:
just rearrange the number with the variable
Prove that Tan x + Cos x = 1 /Sin x .Cos x
Answer:
tanx + cotx = [tex]\frac{1}{sinxcosx}[/tex]
Step-by-step explanation:
Explanation
Take R.H.S = [tex]\frac{1}{sinxcosx}[/tex]
= [tex]\frac{sin^{2}x+cos^{2}x }{sinxcosx}[/tex]
= [tex]\frac{sin^{2}x }{sinx cosx} + \frac{cos^{2} x}{sinxcosx}[/tex]
= [tex]\frac{sinx}{cosx} + \frac{cosx}{sinx}[/tex]
= tanx + cotx
tanx + cotx = [tex]\frac{1}{sinxcosx}[/tex]
–45 • –3 = please i need hep
Answer:
135
Step-by-step explanation:
Javier worked out the following on his math homework: “What equation best represents the relationship between x and y in the graph?" Javier’s answer was y= -4x - 2. Is he correct? If not, explain what he did wrong AND give the correct answer. *
12 points
Answer:yes he is correct
Step-by-step explanation: if you go on a certain site and you put in the equation, you press enter then it will pop up with what you want to do. Press graph, then you can compare the graphs and if it is the same you know it is correct
A researcher took a poll of people in his state. He asked each person if he or she had any pets (Yes or No) and to state his or her political party affiliation (Republican, Democrat, or Other). If the researcher computed a chi square test of independence using the responses, what would the degrees of freedom value be
Answer:
DF = 2
Step-by-step explanation:
Formula for degree of freedom is;
DF = n - 1
Where n is sample size
In this question, political party affiliation could be Republican, Democrat, or Other. Thus, sample size is 3.
DF = 3 - 1
DF = 2
Thus, degree of freedom value would be 2
TWO MULTIPLE CHOICE QUESTIONS PLS HELP
Answer:
sorry i only know the number 2.
so the answer is the first one...
Find the area of the red triangle.
Also explain.
Answer:
The answer is 9
Step-by-step explanation:
So In order to solve this problem, you need to understand how the area of a parallelogram works. If you already know how the area of a parallelogram and the area of a triangle are related, add 79 and 10 and subsequently subtracting 72 and 8 to get 9.
Answer:u
Step-by-step explanation:
The speed limit is 55 kilometers per hour. What is the speed limit in miles per hour?
Answer:
34.2 or 34.20
Step-by-step explanation:
I think that it is this
Answer:
34.2
Step-by-step explanation:
How many 38s does it take to make 32.
Answer:
.842
Step-by-step explanation:
Divide 32 by 38 to figure out how many of them are needed. Answer is .842 rounded.
Suppose that scores on a particular test are normally distributed with a mean of 140 and a standard deviation of 18. What is the minimum score needed to be in the top 5% of the scores on the test? Carry your intermediate computations to at least four decimal places, and round your answer to one decimal place.
Answer:
153.16
Step-by-step explanation:
We solve using z score formula
z = (x-μ)/σ, where
x is the raw score = ???
μ is the population mean = 140
σ is the population standard deviation = 8
Top 5% means the score is in the 95th percentile
The z score of 95th percentile = 1.645
1.645 = x - 140/8
Cross Multiply
1.645 × 8 = x - 140
13.16 = x - 140
x = 13.16 + 140
x = 153.16
Therefore, the minimum score needed to be in the top 5% of the scores on the test is 153.16
Brandon decided to make his own hand sanitizer.
To be effective, hand sanitizer should contain 60% alcohol.
If Brandon uses 120ml of pure alcohol, how much sanitizer can he make?
Answer:
200ml
Step-by-step explanation:
120ml ÷ 60 = 2 x 100 = 200ml
The solution is 200 mL
The amount of sanitizer Brandon can make from 120mL of alcohol is given by the equation A = 200 mL
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the amount of sanitizer from 120 mL of alcohol be A
Now , the equation will be
The sanitizer should contain 60% alcohol
So ,
120 = ( 60 / 100 ) x amount of sanitizer from 120 mL A
Substituting the values in the equation , we get
120 = ( 60 / 100 ) x A
Divide by 60 on both sides of the equation , we get
A / 100 = 2
Multiply by 100 on both sides of the equation , we get
A = 200 m L
Therefore , the value of A is 200 mL
Hence , the amount of hand sanitizer is 200 mL
To learn more about equations click :
https://brainly.com/question/19297665
#SPJ2
Sorry for the blurry picture I'm in a rush if anyone could help me that would be amazing
Answer:
y=1/2x
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form y/x=k or kx
The value of the constant k is equal to the value of the slope m
In this problem we have the point (8,4)
Find the value of k
y/x=k------> substitute the value of x and y
4/8=k
k=1/2
The equation is equal to
y=1/2x
Which decimal is equivalent to 5/8
Answer:
0.625
Step-by-step explanation:
The lines on top of the numbers means that the number continues for a long time. However, 5/8 isn't infinite which means we can rule the 2nd and 3rd options. We also know that 5/8 certainly isn't greater than 1 which means the only answer we have left is the 1st one.
(sorry this is so confusing but I hope it helped anyway)
Write y−4=1/2(x−3) in slope-intercept form.
Answer:
y = 1/2x + 2 1/2
Step-by-step explanation:
y - 4 = 1/2 (x - 3)
y - 4 = 1/2x - 3/2
y = 1/2x - 3/2 + 4
y = 1/2x + 2 1/2
Ivan earned $343.75 for working 25 hours last week. How much does Ivan get paid per hour?
Answer:
$13.75
Step-by-step explanation:
Ivan earns $343.75 working for 25hours
The amount that Ivan gets if he works for 1 hour can be calculated as follows
= 343.75/25
= 13.75
Hence the amount paid for one hour is $13.75
If g(x) = x2 + 2, find g(3). (2 points)
9
8
11
6
Answer:
The answer is 11
Step-by-step explanation:
so substitute 3 for x, then your equation would be 3^2 + 2
3^2 is 9
9 + 2 = 11
Jamie works 6.5 hours on Monday and 5.25 on Tuesday. She makes $12 per hour. How much money does she earn from working Monday and Tuesday?
I really need help with these two, I'd really appreciate an answer as soon as possible. (Questions in picture below)
Answer:
2.$9.25 3.11
Step-by-step explanation:
For the first question virtually you could just go through each one and determine how they would fit. But what I did for both is determine the change in the first column (5 in #2 3 in #3) Then subtract the second change from the first in the second column (185-138.75 and 132-99) you come up with a rate of change like (46.25 and 33) then using that number dividing by the change from the first column (46.25/5=9.25 and 33/3=11) And to check applying all of that to the other changes.
Inequ
What is the solution to the inequality -3.x + 7 > 1?
Х
DONE
Answer: x < 2
-3x + 7 > 1
<=> -3x > - 6
<=> x < -6/-3
<=> x < 2
Step-by-step explanation:
Can someone explain this problem to me?? After a price reduction of x%, an item has its price increased to its original value. What was the percent of increase? Express your answer as a common fraction in terms of x.
Answer:
[tex]We\ are\ given\ that,\\Percent\ of\ reduction=x_-\\So,\\Let\ the\ percent\ of\ increase\ be\ x_+\\Let\ the\ original\ price\ of\ the\ item\ be\ y\\Let\ the\ price\ after\ the\ decrease\ be\ z\\.\\Hence,\\y-\frac{x_-}{100} =z\\ z+\frac{x_+}{100}=y\\By\ simply\ adding\ the\ equations,\\(y+z)+(- \frac{x_-}{100}+\frac{x_+}{100})=(z+y)\\Hence,\\- \frac{x_-}{100}+\frac{x_+}{100}=0\\Hence,\\ \frac{x_-}{100}=+\frac{x_+}{100}\\Hence,\\x_-=x_+\\[/tex]
[tex]Hence,\ the\ percent\ of\ increase\ is\ same\ as\ the\ percent\ of\ decrease.[/tex]