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denpristay [2]
3 years ago
8

Solve the simultaneous equations. 6x+5y=20 5x+2y=21

Mathematics
1 answer:
Drupady [299]3 years ago
8 0
6x+5y-20=0



that is the first one
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What is the equation of the line shown in this graph?<br><br> Help
LiRa [457]

Answer:

y = 1

Step-by-step explanation:

no slope, and Y will always equal 1

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3 years ago
Find the area of the right triangle. If necessary, round to the nearest tenth
Ad libitum [116K]

Answer:

B. 150 yards

Step-by-step explanation:

Area of a Triangle = .5 * Base * height

So we need the height of the triangle, or the missing side.

We have to use Pythagorean Theorem to solve this:

A^2 + B^2 = C^2

15 ^ 2 + B ^ 2 = 25 ^2

b^2 = 25^2 - 15 ^ 2

b^2 = 625 - 225

b^2 = 400

sqrt (400) = 20

The missing height is 20. Now we plug it into 1/2 * b * H

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3 years ago
156 times 0.20 times 6
Verizon [17]

Answer: 187.2

Step-by-step explanation:

3 0
3 years ago
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−5y+3x=3<br> −8y+9x=−12<br> ​<br> What is X and Y please.
Tomtit [17]

Answer:

( -4, -3 )

Step-by-step explanation:

Let's solve by elimination. Reason being there are no variables without coefficients.

−5y+3x=3     Multiply equation by 3. Each term.  

−8y+9x=−12

-15y + 9x = 9       Subtract the to equations

-8y  + 9x = -12

___________

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y = -3

Substitute y into original equation

-5(-3) + 3x = 3

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x = -4

4 0
3 years ago
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Which equation shows the point-slope form of the line that passes through (-9, -3) and has a slope of -6?
Snowcat [4.5K]

Answer:

y=-6x-57 is your answer.

Step-by-step explanation:

You will use this equation:

y-y1=m(x-x1). The y1 is -2 and the x1 is -9.

y-(-3)=-6(x-(-9)). You will the distribute the -6 into the x and the -9.

y+3=-6x-54. You will then subtract 3 to both sides.

y=-6x-57 is your answer.  

3 0
3 years ago
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