2 years ago

Plzzzzzz help Solve the system by Substitution.

Mathematics

1 answer:

tankabanditka [31]2 years ago

4 0

Answer:

Both systems can be sloved by susbituding (1,2)

Step-by-step explanation:

(1)- x−4y=−7

Substitute in the x and y values: 1 - 4 (2) = -7

Multiply the numbers : 1 - 8 = -7

Calculate the difference: -7 = -7

(2) - −x+2y=3

Substitute in the x and y values: -1 + 2 (2) = 3

Multiply the numbers : -1 + 4 = 3

Calculate the sum: 3 = 3

You might be interested in

Please help solve for correct answer

EastWind [94]

Answer:

x = 210

Step-by-step explanation:

The opposite arc is always twice the angle.

so 105 * 2 = 210.

4 0

2 years ago

Write a rule for g and then graph each function. Describe the graph of g as a transformation.

GuDViN [60]

Hey I need help on that too. Do you want to be friends with me??

7 0

3 years ago

I need some help on my hw! Find the area

Andrej [43]

Area is length times width 42x20=840

3 0

3 years ago

Read 2 more answers

What is the product of 1/4 and -5/12

blsea [12.9K]

ASWER.

1/6

FIRST

12 IS THE LOWEST COMMON DENOMINATOR

SECOND

1\3
4/3
=-5/12

THIRD 3 -5/12
= -2/12
=1/6

6 0

2 years ago

What is the trigonometric ratio for sin Z ?

Schach [20]

In all right triangles, the ratio between a leg and the hypothenuse is the sine of the angle opposite to the leg.

So, in your case, we have

$\sin(Z) = \dfrac{XY}{XZ}$

In order to find XY, we have

$XY = \sqrt{XZ^2-YZ^2} = \sqrt{1600-1024}=\sqrt{576} = 24$

So, the ratio for the sine is

$\sin(Z) = \dfrac{XY}{XZ} = \dfrac{24}{40} = \dfrac{3}{5}$

6 0

2 years ago