3 years ago

PLEASE HELP ASAP For each expression below, select the letter that corresponds to the equivalent expression from the given list.

Mathematics

1 answer:

LenaWriter [7]3 years ago

4 0

BAnswer:

B-D-A

Step-by-step explanation:

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A ship goes at the rate of (3m-2) knots per hour. How far can it travel in (4m+9) hours?

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Answer: $12m^2+19m-18$

Step-by-step explanation:

Given

Speed of boat $v=3m-2\ \text{knots per hour}$

$\text{time t= }4m+9\ \text{hours}$

$\Rightarrow \text{Distance =speed}\times \text{time}$

$\Rightarrow \text{Distance d=}(3m-2)\cdot (4m+9)\\\Rightarrow d=12m^2+19m-18$

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3 years ago

It takes Bobby 12 hours longer to build a robot than it takes Alex. Together, they can build the Robot in 8 hours. How long does

anyanavicka [17]

Answer:

24 hours

Step-by-step explanation:

The computation of the number of hours taken by Bobby to build the robot by himself is shown below:

Given that

Bobby could take 12 hours

Together they could build in 8 hours

So based on the above information

the number of hours taken by Bobby to build the robot by himself is

Let us assume the above line be x

So,

$\frac{1}{8}-\frac{1}{12} = \frac{1}{x} \\\\\frac{6 - 4}{48} = \frac{1}{x} \\\\\frac{2}{48} = \frac{1}{x} \\\\x = \frac{48}{2}$

x = 24 hours

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3 years ago

THE TOPIC IS: AREA OF CIRCLES!! PLEASE HELP ME WITH THIS QUESTION!!! WHATS THE ANSWER?? I WILL GIVE YOU BRAINLIEST AND A THANKS!

oksano4ka [1.4K]

Answer:

49pi, or 153.93

Step-by-step explanation:

pi*r^2=Area

14/2=7=r

r^2=7^2=49

Answer:49pi or 153.93

Plz give brainliest as you said you would!

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2 years ago