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AVprozaik [17]
3 years ago
7

What is y = 5 - 2x 3x - 2y = 4

Mathematics
1 answer:
timofeeve [1]3 years ago
5 0

Answer:

x = 2

y = 1

Step-by-step explanation:

y = 5 - 2x (1)

3x - 2y = 4 (2)

From (1), substitute in (2)

3x - 2(5 - 2x) = 4

3x - 10 + 4x = 4

Collecting like terms

3x + 4x = 4 + 10

7x = 14

x = 2

Since x = 2

Therefore

y = 5 - 2x

y = 5 - 2(2)

y = 5 - 4

y = 1

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Help A.S.A.P please thank you and please :D
Lina20 [59]

Answer:

Emma was right to say that both packages are close to 2 pounds.

If we round-off the weights of both to the nearest whole number we would get 2 pounds on both. We look at the the difference of both from 2 pounds we get the following:

2.36 - 2.0 = 0.36

2.09 - 2.0 = 0.09

The smaller the difference the closer it is to the base value. So we can say that the closest one is 2.0 pounds is the package that weighs 2.09 pounds.

8 0
3 years ago
Simplify the following completely, show all work. √-45
scoray [572]

Answer:

3\sqrt{5}i

Step-by-step explanation:

\sqrt{-45}

\sqrt{-9*5}

\sqrt{-9}\sqrt{5}

3i\sqrt{5}

3\sqrt{5}i

7 0
3 years ago
Can someone help me do this
stealth61 [152]

Answer:

False.

Step-by-step explanation:

The ratio is 1:500, which means that the model will be 500 times smaller than the real deal.

The real airplane is 50 metres, or 5,000 centimetres. The model is 50 cm. 5,000 / 50 = 1,000 / 10 = 100 / 1 = 100. Since 100 is NOT equal to 500, the answer is false.

Hope this helps!

3 0
3 years ago
What is the length of AB when A is (-7,-6) and B is (1,0)
NemiM [27]

Answer:

The answer is

<h2>10 units</h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

d =  \sqrt{( {x1 - x2})^{2}  +  ({y1 - y2})^{2} }  \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

A (-7,-6) and B (1,0)

The distance between them is

|AB|  =  \sqrt{( { - 7 - 1})^{2}  +  ({ - 6 - 0})^{2} }  \\  =  \sqrt{ ({ - 8})^{2}  +  ({ - 6})^{2} }   \\  =  \sqrt{64 + 36}  \\  =  \sqrt{100}  \:  \:  \:  \:  \:  \:  \:  \:

We have the final answer as

<h3>10 units</h3>

Hope this helps you

5 0
4 years ago
Sum of 16 diffrenece of 2 two numbers
Yuliya22 [10]

Answer:

The numbers that represent this situation are 7 and 9.

Step-by-step explanation:

For this problem, we have to find two numbers that sum up to 16 and have a difference of 2.

First, let's list out the numbers the sum up to 16.

1 + 15

2 + 14

3 + 13

4 + 12

5 + 11

6 + 10

7 + 9

From this list, we can see that 7 and 9 are our numbers. 7 and 9 sum up to 16. When you subtract 7 from 9, then you will get a difference of 2.

<u>So, two numbers that have a sum of 16 and a difference of 2 are 7 and 9. </u>

3 0
3 years ago
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