All categories

3 years ago

I need help. i don’t understand this question .

Mathematics

1 answer:

user100 [1]3 years ago

6 0

So the question is asking to solve for y

You know RS=7y-4

You know ST=y+5

You know RT=28

RS+ST=RT as shown in the diagram, This means that you can use that equation and replace RS,ST, and RT with what you know they are equal too. So you end up with the equation:

(7y-4)+(y+5)=28, Now you have to solve for y

7y-4+y+5=28

8y+1=28

8y=27

y=3.375

You might be interested in

In a right triangle, 40-x=(3x). What is the value of x?

Archy [21]

Answer:

x=10

Step-by-step explanation:

Let's solve your equation step-by-step.

40−x=3x

Step 1: Simplify both sides of the equation.

40−x=3x

40+−x=3x

−x+40=3x

Step 2: Subtract 3x from both sides.

−x+40−3x=3x−3x

−4x+40=0

Step 3: Subtract 40 from both sides.

−4x+40−40=0−40

−4x=−40

Step 4: Divide both sides by -4.

−4x

−4

−40

−4

x=10

8 0

3 years ago

There are 9 children in a class who take the bus to school, and there are 15 total children in the class. What percentage of the

tiny-mole [99]

Answer:

60%

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

50 centimeters to meters 6.3 meters to centimeters

Elenna [48]

0.5 meters in 50 centimeters because there are 100 centimeters in 1 meter. so 100/50 is 50 which is a half or 0.5.

630 centimeters in 6.3 meters. 6.3*100=630

4 0

3 years ago

What is the vertex form of y = x2 + 4x-7?

alexdok [17]

Find the vertex form.

y=(x+2)^2−11

plz mark me as brainliest :)

3 0

3 years ago

PLZS HELP THIS IS MY LAST QUESTION!!

Vikki [24]

Answer:

Step-by-step explanation:

According to figure, 

54° + 3x+36° = 180° [Linear pair]

=> 3x + 90 = 180

=> 3x = 180 - 90

=> 3x = 90

$= > x = \frac{90}{3}$

=> x = 30 (Ans)

4 0

3 years ago

Read 2 more answers