3 years ago

The fraction a/b must be equal to which expression

Mathematics

1 answer:

OlgaM077 [116]3 years ago

3 0

Answer:

Step-by-step explanation:

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fiasKO [112]

Answer:

X 3/14

Step-by-step explanation:

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Solve the system of equations using elimination/combinations-2x -y = -4 x + 2y =5

sweet-ann [11.9K]

Answer:

x = 1, y = 2

Step-by-step explanation:

In the elimination method to solve a system of linear equations, one of the two equations is added/subtracted to the other, in order to eliminate one variable from the equation.

In this problem, we have the following two equations:

$-2x-y=-4\\x+2y=5$

To solve the system, first we multiply by 2 both sides of the second equation, and we get:

$2(x+2y)=2(5)\\2x+4y=10$

So now the system is

$-2x-y=-4\\2x+4y=10$

Now we add the two equations, and we get:

$(-2x+2x)+(-y+4y)=(-4+10)\\3y=6$

So, we get

$y=\frac{6}{3}=2$

Now we can substitute this value of y into the eq.(2), and we get:

$x+2y=5\\x+2(2)=5\\x+4=5\\x=5-4=1$

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3 years ago

0.01 is blank times as much as 0.001 please answer i will brainliest

coldgirl [10]

Answer:

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Step-by-step explanation:

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Pythagorean theorem A=8 B=? C=17

QveST [7]

$\text{Solve for b:}\\\\\text{Pythagorean Theorem:}\\\\a^2+b^2=c^2\\\\\text{Plug in and solve:}\\\\8^2+b^2=17^2\\\\64+b^2=17^2\\\\64+b^2=289\\\\\text{Subtract 64 from both sides}\\\\b^2=225\\\\\text{Square root both sides}\\\\\sqrt{b^2}=\sqrt{225}\\\\\boxed{b=15}$

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4 years ago

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Negative 1/4 multiplied by negative 6/11 <br> Help!!!

shtirl [24]

<span>Negative 1/4 multiplied by negative 6/11:
(-1/4) * (-6/11) = 6/44 = 3/22</span>

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3 years ago