3 years ago

Please help

Mathematics

1 answer:

Rasek [7]3 years ago

7 0

B is the answer i believe

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2 years ago

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7 ( x - 12 )= -21 solve for x

marshall27 [118]

Divide botoh sides by 7
x-12=-3
add 12 to both sides
x+12-12=12-3
x+0=9
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3 years ago

I need help with a math equation

baherus [9]

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Step-by-step explanation:

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2 years ago

the population of the town is decreasing by 12% each year if the current population of the town is 13500, what will be the popul

Anit [1.1K]

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3 years ago

the weight M of an object on Mars varies directly as it’s weight E on Earth. A person who weighs 95 lb on Earth weighs 38 lb on

lorasvet [3.4K]

Answer:

A 100 lb person will weight 40 lb on Mars

Step-by-step explanation:

Given:

Weight on Mars directly varies as its weight on earth.

Let weight on Mars be = $M$

Let weight on Earth be = $E$

Its known that:

$M$ ∝ $E$

Thus

$M=kE$

where $k$ is constant of proportionality.

when $E=95\ lb$ , then $M=38\ lb$

thus, we have

$38=k(95)$

dividing both sides by 95.

$\frac{38}{95}=\frac{k(95)}{95}$

∴ $k=\frac{38}{95}$

Thus when $E= 100$ , $M$ would be calculated as

$M=\frac{38}{95}\times 100$

$M=\frac{3800}{95}$

∴ $M=40\ lb$ (Answer)

∴ A 100 lb person will weight 40 lb on Mars.

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3 years ago