Need help i don't understand

Answer:

see explanation for number line\ $29$

Step-by-step explanation:

this is the answer guys.

Answer:

5: x=27 (Positive)

8: x=9 (9 positive not negative)

11: x=24 (Positive not negative)

Step-by-step explanation:

5: 9*3=27 so 27/9

8: 38+7=45 45/5=9 so x=9

11: 15-7=8 8*3=24, 24/3-15=-7 so x=24

Answer: 30%

Step-by-step explanation:

Answer:

2y-18

Step-by-step explanation:

(y-9)2 -----Distributive property

2*y=2y

2*9=18

=2*y-2*9

=2y-18

Hope this helps ;) ❤❤❤

Answer:

yes

Step-by-step explanation:

Yes.

Step-by-step explanation:

Im pretty sure about this but there's the possibility that I'm wrong.

A number that can be changed into a fraction is a rational number.

So any decimal that terminates (Ends) or repeats (has the same numbers forever.) are in fact rational numbers.

Answer:

B

Step-by-step explanation:

got it right on edge

The domain restriction is x ≥ 1 and inverse function is f⁻¹(x) = 1+√(x+1)

An inverse function is a function that returns the original value for which a function has given the output. If f(x) is a function which gives output y, then the inverse function of y, i.e. f-1(y) will return the value x.

Given:

f(x) = x² – 2x

We can find the inverse function by solving for y:

x = f(y)

x = y² -2y

x +1 = y² -2y +1

x +1 = (y -1)²

√(x +1) = y -1

1 +√(x +1) = y

So, the inverse function is

[tex]f^{-1}[/tex](x) =   1 +√(x +1)

Thus, the minimum value of x for which the original function has this as an inverse is 1.

So, The domain restriction is x ≥ 1 and inverse function is f⁻¹(x) = 1+√(x+1)

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Answer: [tex]x=9[/tex]

Add 15 to both sides

[tex]x-15+15=-6+15\\x=9[/tex]

Steps to solve:

x - 15 = -6

~Add 15 to both sides

x = 9

Best of Luck!

Answer:

(5,-15)

Step-by-step explanation:

X to the midpoint, the x coordinate goes up 2 and the y coordinate goes down 10. So from the midpoint to Y, the x coordinate must go up 2 (making it 5) and the y coordinate goes down 10 (making it -15)

Answer:

If the recipe calls for 5/8 cup of butter, the ratio would be 3:5 (blueberries to butter), if the recipe was enlarged you can use the same method and find out the new ratio

Answer:

6x+15

Step-by-step explanation:

(3) (2x+5)

(3) (2x) + (3) (5)

Answer:

2 1/2 minutes

Step-by-step explanation:

5/8 + 5/8 + 5/8 + 5/8

20/8

2 and 4/8 minutes

Answer:

-3

Step-by-step explanation:

first do -22-2= -24

then do 1/8 of -24= -3

Answer: A and D

Step-by-step explanation:

The function is positive when the graph is above the x-axis.

in the image we can see that the graph is above in between the points:

x = - 5 and x = 0, then goes bellow, and then comes up again at x = 3.5 and the graph ends at x = 4.

Then the regions where the function is positive are:

-5 < x < 0 and 3.5 < x < 4

Then the correct options are:

A and D

Answer:

It's Rational.

Step-by-step explanation:

A rational number is any integer, fraction, terminating decimal, or repeating decimal.

Remove the parentheses, Move the terms, Calculate, Divide both sides, write in parametric form.

Answer should be r = 3/5p + 9, pER

Answer:

x+1 , x<-1

x²-bx-4  , -1≤x≤4

1/2 x +a

substitute x=-1 , continuous everywhere

x+1=x²-bx-4 when x=-1

-1+1=-1²-b-4

then for :

x²-bx-4=1/2 x +a for x=4

4²-4b-4=1/2x+a

16-4(3)-4=4/2+a

16-12-4-2=a

the equations will be :

x+1

x²-3x-4

1/2x-2

I hope this help

Answer:

let the number of children and adult be 7x and 4x

as per question

7x=63

x=63/7=9

no. of adult= 4x= 4*9=36

Step-by-step explanation:

Answer:

-4k-2

Step-by-step explanation:

Answer:

D is correct

Step-by-step explanation:

A is incorrect because the lesser than is .001 higher

B is wrong since is .18 higher

C is wrong because its not equalone is .9 higher

Answer:

D

Step-by-step explanation:

6365.1<6365.999

Answer:

B

Step-by-step explanation:

Option b is our correct answer.

2, 6 , 10b, and -8a.

Given,

2 + 6 + 10b - 8a

We need to find the terms in the expression.

Every expression is made of terms.

Example:

ax² + bx + c + d

ax², bx, c and d are the four terms that make the expression.

Example:

ax² - bx - c - d

ax², - bx, - c  and - d are the terms in the expression.

Remember to take the sign along with the terms.

Find the terms in the expression.

We have,

2 + 6 + 10b - 8a

2  - one expression

6 - one expression

10b - one expression

-8a - one expression

Thus,

Option b is our correct answer.

2, 6 , 10b, and -8a.

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Answer:

15

Step-by-step explanation:

Step 1:

12 + 3

Answer:

15

Two negative signs cancel out and turns it into addition.

Hope This Helps :)

Answer:

13

Step-by-step explanation:

5 (2x - 8) = 90

5 × 2x - 8 = 90

2x - 8 = 90 ÷ 5

2x - 8 = 18

2x = 18 + 8

2x = 26

2x/2 = 26/2

x = 13

13 is the answer to the question.

Answer:

f(4) = -10

x = 0

Step-by-step explanation:

From the graph attached,

For x = 4,

Value of the function will be,

f(4) = y value at x = 4

f(4) = -10

Similarly, for y = g(x) = 2,

x value of the function will be,

x = 0

For which g(0) = 2

Therefore, for x = 0 value of the function will be 2.

g(0) = 2

Answer:

f(4) = -10

Step-by-step explanation:

Answer:

[tex]m = (5n/4) -7[/tex]

Step-by-step explanation:

[tex]n = 4/5(m + 7);m\\(5)n = 4(m + 7)\\5n/4 = m + 7\\m = (5n/4)/7[/tex]

Answer:

the closest the sales man can fit in a box is 96lbs without going over. so therefore, no, he cannot fulfill the order.

Answer:

900

Step-by-step explanation:

Answer & Step-by-step explanation:

This is what is called an arithmetic sequence. An arithmetic sequence adds the same number every time. If we take and subtract the 3rd term from the 4th term, we get 21. However, when we subtract 17 from 26 or 26 from 44, we get 9 and 18 respectively, which is not in keeping with the sequence.

Answer:

255 F

Step-by-step explanation:

133 + 122 = 225.

So that is the answer.

133°F is 255 degrees warmer than -122°F.

To find out how many degrees warmer 133°F is than -122°F, we can subtract the two temperatures:

Temperature difference = 133°F - (-122°F)

Remember that subtracting a negative number is the same as adding its positive value, so the calculation becomes:

Temperature difference = 133°F + 122°F

Temperature difference = 255°F

So, 133°F is 255 degrees warmer than -122°F.

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