2 years ago

Please help! will give brainliest

Mathematics

2 answers:

lisabon 2012 [21]2 years ago

6 0

Answer:

x=7

Step-by-step explanation:

Said it in the last question you had.

Zinaida [17]2 years ago

3 0

Answer:

x=7

Step-by-step explanation:

Since these angles are complementary, they will add up to 90 degrees, so you can set up the equation like so:

8x+5+3x+8=90

First, combine like terms:

(8x+3x)+(5+8)=90

11x+13=90

Then, subtract 13 from both sides:

11x+13(-13)=90(-13)

11x=77

Then divide both sides by 11:

11x(/11)=77(/11)

x=7

7 is your answer

hope this helps!

You might be interested in

In the game Kazoo, teams lose one point each time they skip a turn. They earn one point each time their team guesses correctly.

lbvjy [14]

Answer:

-8 + 6 = - 2

So the answer is - 2

5 0

2 years ago

Will the sum of two linear expressions each with an x-term , always,sometimes,or never have an x-term ? Explain your reasoning

Licemer1 [7]

Sometimes it will, and sometimes it won't.

I reason as follows:

(21 + x) + (30 + 2x) = 51 + 3x has an 'x' term

(42 + x) + (30 - x) = 72 has no 'x' term.

4 0

3 years ago

Find each of the numbers below.

iren [92.7K]

Answer:

opposite of -7 is 7 the oppositeof 3 is -3 oppositeof -4 is 4

8 0

2 years ago

Find the area of a trapezoid<br> Explain please

djverab [1.8K]

Answer:

Step-by-step explanation:

Area = a+b/2 * h

6+10/2= 8

8*4 = 32

7 0

2 years ago

When a particular mass-spring system is started by stretching the spring 3 cm, one complete oscillation takes 4 seconds.

11Alexandr11 [23.1K]

Answer:

A. 5.16 s.

B. 5.66 s.

Step-by-step explanation:

For a simple harmonic motion,

T = 2pi (sqrt * (l/g))

Given:

L1 = 3 cm

T1 = 4 s

L2 = 5 cm

T2 = ?

4 = 2pi*sqrt(3/g)

g = 7.4

At, L2,

T2 = 2pi*sqrt(5/7.4)

= 5.16 s.

M1 = M1

M2 = 2*M1

For a simple harmonic motion,

T = 2pi (sqrt * (m/k))

4 = 2pi (sqrt * (M1/k))

M1/k = 0.405

Inputting the above values,

T2 = 2pi (sqrt * (2*M1/k))

= 2pi (sqrt * (2 * 0.405))

= 5.66 s.

4 0

2 years ago