3 years ago

What the method and answer for Q8and9

Mathematics

1 answer:

olga55 [171]3 years ago

7 0

For #8, it's approximately 2.5

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If x = 8 and y = -3, evaluate the following expression: 20 - 5y + 2x

solniwko [45]

Answer:

Step-by-step explanation:

Given the following question:

$20-5y+2x$
$x=8$
$y=-3$

Substitute and solve using PEMDAS:

$20-5y+2x$
$20-5(-3)+2(8)$
$5\times-3=-15$
$20--15+2(8)$
$2\times8=16$
$20-(-15)+16$
$20--15=35$
$35+16=51$
$=51$

Your answer is "51."

Hope this helps.

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2 years ago

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Answer:

Detail attached

Step-by-step explanation:

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3 years ago

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kati45 [8]

Answer:

Step-by-step explanation:

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But also give drivers an incentive to drive faster, which could potentially increase the number of car accidents.

Because drivers know that the new brakes cut the time it takes to stop and if they drive faster than before, maybe the new brakes won´t be able to reduce accidents and maybe collisions will increase.

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3 years ago

Variables x and y are in direct proportion, and y = 48n when x = 16n. Which value of k correctly relates x and y in the equation

ella [17]

You want k.
k=y/x=48n/16n=3

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3 years ago

I need help on my math

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