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Bezzdna [24]
3 years ago
7

Is (4, -2) the solution of the system of equations shown

Mathematics
1 answer:
Advocard [28]3 years ago
8 0

No, because if you substitute (4, -2) into x and y in each equation, they are not the same as the value on the right side of the equation.

2(4) + 4(-2) = - 2

8 + -8 = -2

0 = -2 <---- this is not correct.

-4(4) + -2 = -14

-16 + -2 = -14

-18 = -14 <----- this is not correct.

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Anita is making a curtain to surround a table. She bought 20 yards of fabric. Her total cost was $13. What was the cost per yard
Ne4ueva [31]

In other words, what's the unit rate, the price per 1 yard of fabric?

$13

--------- = ($13 / 20 yd), or $0.65 / yd

20 yd

8 0
3 years ago
Read 2 more answers
Mikel gave a $1.32 tip for an order that cost $8.80. Determine whether or not each tip below is proportional to Mikel's tip. $2.
ludmilkaskok [199]

Answer:

1. Proportional

2. Not proportional

3. Proportional

Step-by-step explanation:

Mike's proportion

Michael gave $1.32 tip for an order that cost $8.80

$1.32÷$8.80=0.15

Given

1. $2.22 for $14.80

$2.22÷$14.80 =0.15

It is proportional to Mike's tip

2. $1.86 for $10.50

$1.86÷$10.50=0.1771

It I not proportional to Mike's tip

3. $0.78 for $5.20

$0.78÷$5.20=0.15

It is proportional to Mike's tip

Therefore,

1. Proportional

2. Not proportional

3. Proportional

5 0
3 years ago
If ∠A and ∠B are supplementary and m∠A = 37°45', then m∠B = ______.
xenn [34]

Answer: 142°15'

Explanation:

Supplementary angles are angles that add up to make a straight angle (180^{\circ}).

Therefore, we must find the angle ∠B such that

∠A + ∠B = 180° (1)

We know that ∠A = 37°45', so we can re-arrange equation (1) to find the magnitude of ∠B:

∠B = 180° - ∠A = 180° - 37°45' = 142°15'

So, the correct answer is

142°15'

6 0
3 years ago
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lorasvet [3.4K]

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Step-by-step explanation:

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4 0
3 years ago
The dimensions of a smaller rectangle are 3ft by 9ft. The dimensions of a larger rectangle are 5ft by 11ft. Find the ratio of th
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Answer:

3:4

Step-by-step explanation:

Sorry for the wait

8 0
3 years ago
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