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3 years ago

Help plzzzz!!!!!!!!!! plz help!!!!!!!!!

Mathematics

1 answer:

Sedbober [7]3 years ago

7 0

5x+3x+7x=180
15x=180
x=12
5(12)=60
3(12)=36
7(12)=84

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PLEASE HELP ME.....

Virty [35]

Answer:

They would meet each other at $01 : 24$ PM.

Step-by-step explanation:

Erik took a trip to see his friend Mike who lives 308 miles away.

He left his place at 10 AM driving at 70 mph.

In 2 hours, his friend Mike left his place driving towards Erik at an average speed of 50 mph.

As Erik left his house at 10 AM driving at 70 mph and in 2 hours, his friend Mike left his place driving towards Erik at an average speed of 50 mph. It means

Erik left his place at 12:00 PM noon.

so, at 12:00 PM Erik had already traveled:

$2\times 70=140\:\:miles$

Miles left $=308-140=168\:\:miles$

Let 't' be the time when they meet

$70t\:+\:50t\:=168$

$120t=168$

$\mathrm{Divide\:both\:sides\:by\:}120$

$\frac{120t}{120}=\frac{168}{120}$

$t=\frac{7}{5}$

$t=\frac{7}{5}=1.4\:\:hours$

or $1$ hour and $24$ minutes after $12:00$ noon

i.e.

$12\:+\:1.4\:=1\:O'clock\:+\:24\:minutes$

Therefore, they would meet each other at $01 : 24$ PM.

7 0

3 years ago

What is the slope of the line that contains the points (-1, 8) and (2, -4)

Reptile [31]

Answer:

+5 is the slope

Step-by-step explanation:

4 0

3 years ago

Seventy-five 6th-grade students chose to watch a movie on the last day of school.

EleoNora [17]

Answer:

c.300

Step-by-step explanation:

25%-----75 studens

100%-----x students

x=100×75/25= 300

5 0

3 years ago

Is 3 x 1/2 greater than 5?

Kryger [21]

No it is not greater than 5

When ever you are multiply a number by 1/2 you are halving the number. So in the us case 3 x 1/2 is 1.5.

And 1.5 is not greater than 5

So the answer is no

Can you please mark brainleist

3 0

2 years ago

WORTH 10 points.

Tanya [424]

The answer is B because I did the math

8 0

3 years ago