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iragen [17]
3 years ago
14

What is the x and the y

Mathematics
1 answer:
Ghella [55]3 years ago
4 0

Answer:

x=5\\\\y=-8

Step-by-step explanation:

Given Equation:

-7x-10y=45\\\\ Equation:1

-3x-5y=25   Equation:2

Multiplying Equation:2 by '2':

-6x-10y=50  Equation:3

Using Elimination Method: Subtracting Equation:1 from Equation:3:

-6x-10y-(-7x-10y)=50-45

-6x-10y+7x+10y=5\\\\

Solving Like terms:

-6x+7x=5\\\\x=5

Put the value of 'x' in Equation:2

-3x-5y=25

-3(5)-5y=25\\\\-15-5y=25

Adding '15' both sides:

-5y=25+15\\\\-5y=40

Dividing by '-5' both sides:

y=40/-5\\\\y=-8

The values of 'x' and 'y' are:

x=5\\\\y=-8

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Answer:

Estimate = 0.4

Quotient = 0.355 ---> Approximated to nearest thousandth

Step-by-step explanation:

Question like this is better answered using attachment;

See Attachment

When 1.066 is divided by 3,

The quotient is 0.3553......

When estimating to tenths,

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This gives 0.4

When estimating to nearest thousandth,

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AfilCa [17]

Answer:

45

Step-by-step explanation:

Triangles equal up to 180 degrees therefore you do the following to solve this equation. So you have 80 and 55. So you add 80 to 55 and you get 135. Now you subtract 180 by 135 and that equals 45. So x=45. I will write it out as well.

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Step-by-step explanation:

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