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3 years ago

Question 9 of 10

Mathematics

1 answer:

telo118 [61]3 years ago

5 0

Answer:

The answer is A

Step-by-step explanation:

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Solve the proportion. When necessary, round to the nearest tenth? 36/j = 7/20

erastovalidia [21]

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3 years ago

Please help with this math problem! I will mark brainliest!! Tysm!

Monica [59]

The answer is D

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2 years ago

Read 2 more answers

5. Use any method to solve the equation. If necessary, round to the nearest hundredth.

DanielleElmas [232]

Answer:

2.45, -2.45

Step-by-step explanation:

Since the equation has only one term in the unknown "x", we can solve for it isolating "x" on one side of the equal sign:

$8x^2-48=0\\8x^2=48\\x^2=\frac{48}{8} \\x^2=6\\x=+/-\sqrt{6} \\x=+/- 2.449$

Which we can round to: x = - 2.45 and x = 2.45

7 0

3 years ago

Mary, who is sixteen years old, is four times as old as her brother. how old will mary be when she is twice as old as her brothe

mojhsa [17]

Mary<span> is 2x = 2*12 = </span>24 years old<span>.</span>

6 0

2 years ago

Herman is traveling 125 miles from his house to the beach by car. Herman plans to stop for lunch when the ratio of the distance

aliya0001 [1]

Answer:

250 miles

Step-by-step explanation:

The given distance between the house and the beach is 125 miles.

Let $x$ miles be the distance between the house and the lunch stop.

So, at the time of the lunch stop, he already traveled $x$ miles, the remaining distance is the distance between the lunch stop and the beach.

Let $y$ miles be the remaining distance, so

$y=125-x.$

Give that the ratio of the distance he has traveled, $x$ , to the distance he still has to travel, $y$ , is $2:3$ ,i.e

$x:y=2:3$

$\Rightarrow \frac x y =\frac 2 3$

$\Rightarrow \frac {x}{125-x}=\frac 2 3$

$\Rightarrow 3\times x=2\times(125-x)$

$\Rightarrow 3\times x=2\times125-2\timesx$

$\Rightarrow 3 x=250-2x$

$\Rightarrow 3x-2x=250$

$\Rightarrow x=250$

Hence, the distance traveled by Herman when he stops for lunch is 250 miles.

4 0

2 years ago