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Lady bird [3.3K]

3 years ago

8

What is the acceleration of a plane that increases its speed from 800 kilometers per hour to 860 kilometers per hour in 5 second

s?

1 answer:

gayaneshka [121]3 years ago

8 0

I came up with 43,200 km/h^2

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Solve using the elimination method:<br> X-3y=7<br> 3x + 3y=9

sergij07 [2.7K]

Answer:

$x=4\\\\y=-1$

Step-by-step explanation:

Given Equation:

$x-3y=7$ Equation:1

$3x + 3y=9$ Equation:2

Dividing Equation:2 by '3' both the sides:

$x+y=3$

or $x=3-y$ Equation:3

Putting the vale of 'x' in Equation:1

$x-3y=7$

$(3-y)-3y=7\\\\3-y-3y=7\\\\3-4y=7\\\\$

Subtracting '3' both sides

$-4y=7-3\\\\-4y=4$

$y=\frac{4}{-4}$

$y=-1$

Putting value of 'y' in Equation:3

$x=3-y$

$x=3-(-1)\\\\x=3+1\\\\x=4$

The solution of the equations is :

$x=4\\\\y=-1$

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3 years ago

Solve for y.<br> 5(v+2) = -2(7v-3) + 9v<br> Simplify your answer as much as possible

sveticcg [70]

Answer:

v=-2/5 hope this is helpful

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3 years ago

Craig is putting $5,500.00 into an account for a 5-year period, which pays 4.5% simple interest. Use the formula below to calcul

almond37 [142]

Answer:

Step-by-step explanation:

Thanks for the points mate

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Solve. j+k=3j−k=7 Use the substitution method.

il63 [147K]

Answer:

the solution is (5,-2)

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Pls someone answer because I’m not gonna be able to do this I’m going out of town pls help

Likurg_2 [28]

2 is B :::))))))))))))))))

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2 years ago