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labwork [276]
3 years ago
11

SADFHUABSUDHAYSDXNINWYGBXIDNYW PLEASE ANSEWR

Mathematics
2 answers:
Alenkinab [10]3 years ago
5 0

Answer:

15x-6y=48

Step-by-step explanation:

So we have the system of equations:

5x-2y=16\\15x-7y=51

And we want to multiply the first equation by some constant such that the resulting equation matches the coefficient of [x] in the second equation.

We can see that the coefficient of x in the second equation is 15.

So, to match 15, we must multiply the first equation by 3. So:

3(5x-2y)=3(16)

Multiply:

15x-6y=48

And we're done!

user100 [1]3 years ago
3 0

Answer:

Step-by-step explanation:

-15x + 6y = -48

15x - 7x = 51

-x = 3

x = -3

5(-3) - 2y = 16

-15 - 2y = 16

-2y = 31

y = -15.5

(-3, -15.5)

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What is x, the angle at which the diagonal beam meets the 10-foot beam at the top of the frame? 16.7° 17.5° 72.5° 73.3°
umka21 [38]

The complete question is

"A theater production group is making frames to support wall-like props. Three-foot beams form right triangles with 10-foot beams to allow them to stand, as shown in the image.

What is x, the angle at which the diagonal beam meets the 10-foot beam at the top of the frame?

16.7°, 17.5°, 72.5°,73.3°"

The value of angle x would be 16.7 degrees.

<h3>What is the right triangle?</h3>

A right-angle triangle is a triangle that has a side opposite to the right angle the largest side and is referred to as the hypotenuse.

The angle of a right angle is always 90 degrees.

In order to find the value of x, a tan would be used.

This is because we have given the opposite and adjacent sides as 10 ft and 3 ft.

Tan Ф = opposite / adjacent

Tan Ф =  (3/10)

= 16.7 degrees

The value of angle x would be 16.7 degrees.

Learn more about a right angle;

brainly.com/question/7116550

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6 0
1 year ago
The table represents a function.
yan [13]

Answer:

The table represents a function.

What is the value of f(-1)?

f(-1) = - 3

f(-1) = -1

f(-1) = 0

f(-1) = 6

Step-by-step explanation:

7 0
3 years ago
The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. Which equation models t
Zanzabum

Answer:  [H+] = 10^-7.2

Step-by-step explanation:

Given that the PH of the solution = 7.2

Using the formula pH = –log[H+]. To get the H+ concentration from the pH, raise both sides by the base of 10. Then we have

10^ -pH = H+. with pH of 7.2,

Thus the answer to this problem is

[H+] = 10^-7.2

8 0
3 years ago
The area of the triangle below is 33.62 square feet. What is the length of the base?
Lemur [1.5K]

Answer:

8.2 ft

Step-by-step explanation:

33.62 * 2 / 8.2 = 8.2 ft

4 0
3 years ago
Read 2 more answers
How many solutions does the system have? x+2y=2 2x+4y=−8 ​
Nikitich [7]

Answer:

Step-by-step explanation:

x + 2y = 2

2x + 4y = -8

-2x - 4y = -4

 2x + 4y = -8

0 not equal to -12

no solution

3 0
3 years ago
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