2 years ago

I need help with the problem

Mathematics

1 answer:

zzz [600]2 years ago

7 0

I think it should be angle bisector

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15=1/2+3/2x+10

enot [183]

Answer:

x = 1/3

Step-by-step explanation:

15 = 1/2 + 3/2x + 10

15 - 1/2 -10 = 3/2x

9/2 = 3/2x

9 x 2x = 3 x 2

18x = 6

x = 6/18

x = 1/3

7 0

3 years ago

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Which fraction expresses 36/80 in lowest terms. A- 9/20 B-18/40 C-4/5 D- 18/20

gladu [14]

B) is the correct answer.

6 0

3 years ago

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Angela left for work at 8:30 a.m. She returned to school at 11:30 a.m. How long was Angela at work?

Dimas [21]

Answer:

Angela was at work for 15 hrs.

8 0

2 years ago

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Dina and Masha start cycling on a 20 km bike path at the same time. When Dina reaches the end of the path, Masha still has 4 km

sammy [17]

Answer:

0.5 hour

Step-by-step explanation:

Given

Speed of Dina = 10 km/h

Distance = 20 km

So the time Dina taken to complete the track is:

$Speed=\frac{distance}{time}\\10=\frac{20}{time}\\time=\frac{20}{10}\\ time=2\ hours$

The time taken by Dina is 2 hours. As masha started with dina but she was 4 km of the path left to cycle,

her distance covered in 2 hours was:

$Distance\ covered\ by\ Masha\ in\ 2\ hours=20-4\\=16 km$

So we know the time and distance:

Now,

$Speed\ of\ Masha=\frac{distance}{time}\\ =\frac{16}{2}\\ =8\ kilometer\ per\ hour$

We have to calculate the time that will be needed by MAsha to complete the track:

As we know the speed and remaining distance

$Speed=\frac{distance}{time}\\8=\frac{4}{time}\\ time=\frac{4}{8}\\time=0.5\ hours$

Masha needs 0.5 hour to complete the track ..

7 0

3 years ago

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F (x) = -4x + 4 f(2)=

sp2606 [1]

Substitute x = 2 as we get

f(2) = -4(2)+4 = -8+4 = -4

Therefore, f(2) = -4

7 0

3 years ago

I need help with the problem ​

I need help with the problem