8x+15 =2 (4x)
im on a test please help

Answer:

The answer is 6. Does that help?

Answer:

A

Step-by-step explanation:

Because subtraction and addition are alike just how multiplication and division are.

The inverse of f(x) is (x+6)/5, the correct option is A

Suppose that the given function is

[tex]f:X\rightarrow Y[/tex]

Then, if function 'f' is one-to-one and onto function (a needed condition for inverses to exist), then, the inverse of the considered function is

[tex]f^{-1}: Y \rightarrow X[/tex]

such that:

[tex]\forall \: x \in X : f(x) \in Y, \exists \: y \in Y : f^{-1}(y) \in X[/tex]

It simply means, inverse of 'f' is undo operator, that takes back the effect of 'f'

Given;

f(x) = 5x - 6

f^-1 (x ) = x+6/5

Let, y = f(x) and rearrange making x the subject;

y = 5x - 6 ( add 6 to both sides )

y + 6 = 5x ( divide both sides by 5 )

x = (y+6)/5

Change y back into terms of x

x  = (x+6)/5

Therefore, the answer in inverse will be (x+6)/5

Learn more about inverse function here:

https://brainly.com/question/19425567

#SPJ2

Answer:

16

Step-by-step explanation:

If the ratio is 3 red marbles to 4 blue marbles we can solve this using the following:

[tex]\frac{12}{b} = \frac{3}{4}[/tex]

[tex]12 * 4 = 3b\\48 = 3b\\\frac{48}{3} = b\\b = 16[/tex]

So we have 16 blue marbles.

Based on the ratio of red to blue marbles, the number of blue marbles in the bag is 16 marbles.

The bag has red marbles to blue marbles in a ratio of 3:4.

If there are 12 red marbles, the number of blue marbles can be found by direct proportion:

3   :   4

12  :   x

Cross-multiply:

3x  = 48

x = 48/3

x = 16 blue marbles

In conclusion, there are 16 blue marbles in the bag.

Find out more at https://brainly.com/question/24740624.

Answer:

k = 10

Step-by-step explanation:

180° - 115° = 65°

(4k + 5) + (6k + 10) + 65 = 180

4k + 5 + 6k + 10 + 65 = 180

10k + 80 = 180

10k = 100

k = 10

Answer:

solution:

Answer:

1.504

Step-by-step explanation:

Answer:

− 4

Step-by-step explanation:

The mean of a set of numbers is the sum divided by the number of terms.

Answer:

$9.68

Step-by-step explanation:

The total cost before tax is $75.50 + $12.50 = $88

11% of $88 = 0.11 * $88 = $9.68

Answer: $9.68

Answer:

Step-by-step explanation:

$75.50 (bike) + $12.50 (helmet) = $88 (this is the amount shawn will pay before tax

next $88 (total before tax) multiplied by 0.11 (11% tax) to get $9.68 tax. that should be the answer

edit: answer was wrong before, im really sorry if you already submitted the answer and i got it wrong for you.

Answer:

The answer is c

Step-by-step explanation:

got it right on edge

Answer:

C / 2 times 10 Superscript 16

Step-by-step explanation:

Answer:

80 miles per hour

Step-by-step explanation:

320 miles /4 hours = 80 miles per hour

Answer:

See below.

Step-by-step explanation:

  Statements:                                  Reasons:

1) ∠1≅∠4                                        :Given

2) The two lines are parallel       :Alternate Exterior Angles Converse

3) ∠3≅∠2                                      :Alternate Interior Angles Are Congruent

Answer:

given: 1=4      prove: 3=2

statement         reasons

1=4                    given

1=2                    vertical angles

3=4                   congruent angles

therefore:       3=2

Step-by-step explanation:

Answer: 1/1 or 1

Step-by-step explanation:

Answer:  48 cubes in the new box

Step-by-step explanation:

Doubling the length and the width is 2×2, so 4 times the original capacity.

4×12 = 48

It is not necessary to compute the volume. The dimensions could be anything. It's the number of cubes that count.

Answer:

C, 48

Step-by-step explanation:

I hope that helps!!!!!!!!

the answer is line h

Answer:

h <3

Step-by-step explanation:

Answer:

3-(-6)​ = 9

Step-by-step explanation:

3-(-6) simplifies to 3 + 6.

We would have to distribute the outside negative into the inside to get rid of the parenthesis. Then, we would add.

[tex]3-(-6)\\\\-1 * -6 = 6\\\\3-(-6)=\boxed{3+6}=9[/tex]

Hope this helps.

Answer:

(-0.5, -0.5)

Step-by-step explanation:

Let the coordinates of the point P in quadrant 3 are (x, y).

If a point A is 3 units apart, coordinates of point P will be [(x - 3), y].

From the figure attached,

Coordinates of the point A are (2.5, -0.5).

x coordinate of point P → (2.5 - 3) = -0.5

y coordinate of the point P → (-0.5) = -0.5

Therefore, point P which is 3 units apart from A will be (-0.5, -0.5)

Answer:

0.5,0.5

Step-by-step explanation:

Answer:

Because z is higher than any given value in the chart we come to the conclusion To reject null hypothesis

Step-by-step explanation:

Sample proportion = p= 531/648 = 0.8194

This is the proportion of men that were hit by lightening

Null hypothesis: H0: p = 0.5

Alternate hypothesis: H1: p ≠ 0.5

Test statistics z = 0.8194-0.5/(√0.5x0.5/648)

= 0.8194-0.5/√0.0003858

= 0.3194/0.019642

= 16.26

Since the z > 1.96 (at 5% significance) we reject the null hypothesis.

Therefore in conclusion we say z is higher than given values in the chart so we reject null hypothesis.

Please check attachment!

Answer:

945

Step-by-step explanation:

Answer:

1730 (2 times the whole expression) or 945 (2 times the addend of 80) [what is implied when 80+ 185-40+699-59 is not in parenthesis]

Step-by-step explanation:

2 times (80 + 185 - 40 + 699 - 59) →

2 (80 + 185 - 40 + 699 - 59)

2 ((((80 + 185) - 40) + 699) - 59)

2 ((265 - 40) + 699) - 59)

2 (225 + 699) - 59)

2 (924 - 59)

2 (865)

1730

_____________________

2 times 80 + 185 - 40 + 699 - 59 →

2(80) + 185 - 40 + 699 - 59

(((160 + 185) - 40) + 699) - 59

((345 - 40) + 699) - 59

(305 + 699) - 59

1004 - 59

945

Answer:

32!

Step-by-step explanation:

Answer:

32

Step-by-step explanation:

debt= -43

paycheck= 75

-43 + 75 = 32

Answer:

32

Step-by-step explanation:

We are finding X and it connects to the base and the height, so it is going upward only a bit, so you add the base to the height or 26 + 6 = 32.

Answer:

32

Step-by-step explanation:

All you need to do is add 26 + 6=32

Answer:

x = 9

Step-by-step explanation:

Answer:

4 hours

Step-by-step explanation:

235-75 one time fee, so subtract = 160

160/40 = 4

Answer:

4 Hours

40x - 75 = 235

         -75    -75

40x  = 160

40x/40 = 160/40

x = 4

it would be 15 in. diagonal

Answer:

mnxjzhsyushnauhJnnzuz

Answer:

Its not proportional and not combarable

Answer:

See below

Step-by-step explanation:

1. Reflection by a factor of (-3) and vertical shift down -12 units

2. Vertical shift up by 4 units and reflection by a factor of (-3)

Answer:

yes 61.5 is correct

Step-by-step explanation:

Answer:

First even integer: 6

Step-by-step explanation:

Inequalities

Assume x is the first even integer. The next integer is x+2, and the last integer ix x+4.

The condition states that the sum of the first and the second number is 15 less than three times the third. This takes us to the inequality:

[tex]x+x+2<3(x+4)-15[/tex]

Operating:

[tex]2x+2<3x+12-15[/tex]

Subtracting 2 and 2x:

[tex]0<3x+12-15-2x-2[/tex]

Simplifying:

[tex]0<x-5[/tex]

Solving:

x>5

There are infinitely many solutions. For example, for x=6 (first even number into the solution interval):

First integer: 6

Second integer: 8

Third integer: 10

There are other solutions, like 20,22,24 but the first set is 6,8,10.

Given:

Spoilage rate of fruits = 9% = 0.09

To find:

Amount of fruits to be order to have 100 pounds of peaches and considering the spoilage rate.

Solution:

Let the required amount of fruits you should order be x.

So, spoiled fruits = 9% of x = 0.09x

He would like to have 100 pounds of peaches to sell.

[tex]x-0.09x=100[/tex]

[tex]0.91x=100[/tex]

Divide both sides by 0.91.

[tex]x=\dfrac{100}{0.91}[/tex]

[tex]x=109.89[/tex]

[tex]x\approx 110[/tex]

The required amount of fruits to be order is 110 lbs. Therefore, the correct option is D.