3 years ago

Y=-2x-3 and 7x-5y=-6. solve by substitution

Mathematics

1 answer:

KatRina [158]3 years ago

8 0

Answer:

Step-by-step explanation:

y = -2x - 3

7x - 5y = -6

7x - 5(-2x - 3) = -6

7x + 10x + 15 = -6

17x = -21

x = -21/17

y = -2(-21/17) - 51/17

y = 42/17 - 51/17

y = -9/17

(-21/17, -9/17)

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Rewrite the following equation in slope-intercept form. 6x - 3y = 19

tensa zangetsu [6.8K]

Answer:

y= 2x - 19/3

Step-by-step explanation:

6x-3y=19

3y=6x-19

y=2x- 19/3

slope: 2

y-intercept: -19/3

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2 years ago

What ratios that are equivalent to 4 to 7.

expeople1 [14]

4 to 7 = 4/7

5/8 is not.

12/20 = 6/10 = 3/5 . It is not equivalent.

8:14 = 4 : 7 . It is equivalent

5 to 10 = 1 to 2. It is not.

16/28 = 8/14 = 4/7. It is equivalent.

9 to 16 = 9 to 16. It is not equivalent.

So only 8:14 and 16/28 are equivalent to 4 to 7.

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2 years ago

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ASHA 777 [7]

Answer:

On his 6th birthday, he was 45 inches tall

Step-by-step explanation:

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3 years ago

Each row in the table shows how a picture was enlarged or reduced

Fed [463]

Answer:

1. Tall Dog

2. Small Dog

3. Regular Dog

4. Fat Dog

Step-by-step explanation:

It's simple. Look at the problem ;)

8 0

2 years ago

What is the slope of the line that passes through the pairs of points (-6,8) (2'3)

Alecsey [184]

Im pretty sure the answer is D, because if i used the right formula,
$\frac{y2 - y1}{x2 - x1}$
you should get this in the formula
$\frac{8 - 3}{2 - ( - 6)}$
$\frac{5}{8}$
a 2 subtracting a negative 6 makes it a positive, meaning your just adding 6 plus2, to get 8

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3 years ago