All categories

3 years ago

Please help and give step by step explanation thank you

Mathematics

1 answer:

kondor19780726 [428]3 years ago

8 0

Answer:

x = 40

Step-by-step explanation:

(3x + 5) + (x + 15) = 180

3x + 5 + x + 15 = 180

4x + 20 = 180

-20 -20

4x = 160

÷4 ÷4

x = 40

I hope this helps!

You might be interested in

The answer for this system

Natali [406]

Consider this option:
$\left \{ {{y=3x-4} \atop {2x+3y=21}} \right. \ =\ \textgreater \ \ \left \{ {{y=3x-4} \atop {2x+3(3x-4)=21}} \right. \ =\ \textgreater \ \ \left \{ {{y=3x-4} \atop {11x=33}} \right. \ =\ \textgreater \ \ \left \{ {{x=3} \atop {y=5}} \right.$

answer: (3;5).

8 0

3 years ago

The one-to-one functions g and h are defined as follows.

Ad libitum [116K]

Answer:

Step-by-step explanation:

The one-to-one functions g and h are defined as follows.

g={(-7,-6), (-5,4), (4,-7)(7,6)}

h(x)= 3x-14

Find the following.

g-1(4)=

"g-1(4)" just says "Find the pair of coordinates that has 4 for its

y-coordinate, and the answer is its x-coordinate". So we look through those

and find (-5,4) is the only one of those up there that has a 4 for it's y-

coordinate, and so its x-coordinate is -5 and we write:

g-1(4)=-5

8 0

3 years ago

Can someone answer it please

Komok [63]

Answer: 565.48

Step-by-step explanation:

3 0

4 years ago

What is the scale factor of this dilation?

babymother [125]

To find the scale factor for a dilation, we find the center point of dilation and measure the distance from this center point to a point on the preimage and also the distance from the center point to a point on the image. The ratio of these distances gives us the scale factor

7 0

3 years ago

Matter is in a liquid state when its temperature is between its melting point and its boiling point. Suppose that some substance

ANTONII [103]

Answer:

-35.626 < temperature < 733.928 . . . . degrees F

(-35.626, 733.928)

Step-by-step explanation:

It is convenient to let a calculator evaluate the expression for converting °C to °F.

-35.626 < temperature < 733.928 . . . . degrees F

(-35.626, 733.928) . . . . . . . . . . . . . . . . . in interval notation

_____

The given relation is C = 5/9(F -32). The inverse relation is F = 9/5C +32. That is the relation we need to use to answer this question.

4 0

4 years ago