2 years ago

Solve this system of equation: 5x + 2y = -15 2x - 2y =-6

Mathematics

1 answer:

ElenaW [278]2 years ago

7 0

The answer is x equals -3 and y equals 0

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mojhsa [17]

She has 1 quarter, 1 dime and 13 nickels. So the probability that one coin at random is a nickel is 13/15.

My work:

1$= 100

1 quarter=25

1 dime=10

1+1+13= 15

25×1= 25

10×1= 10

5×13= 65

65+25+10= 100

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2 years ago

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The birth rate in an area is increasing 6% per annum. If there 20,000 children born in this area 2009 how many will be in 2018?

Harrizon [31]

Answer:

Step-by-step explanation:

Compound increase

20,000 x 1.06 to power of 9 = 33789 <u><em>OR</em></u> 33790

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increase by 6% 9 years

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2 years ago

What is the distance between the points 4,10 and -3,-14 on the coordinate plane

Kryger [21]

Answer:

Step-by-step explanation:

Here we are supposed to find the distance between two coordinates ( 4,10) and (-3,-14).

Let us do this step by step with detailed explanation.

We will use distance formula in order to find the distance between them. The distance formula is given as

$D=\sqrt{(x_{2}-x_{1})^{2} +(y_{2}-y_{1})^{2} }$

Here we have

$x_{2}=-3\\x_{1}=4\\y_{2}=-14\\y_{1}=10\\$

Replacing them in the formula we get

$D=\sqrt{(-3-4)^{2} +(-14-10)^{2} }\\D=\sqrt{(-7)^{2} +(-24)^{2} }\\D=\sqrt{49+ 576 }\\D=\sqrt{625 }\\D=25\\$

Hence our distance is 25 units

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