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Lostsunrise [7]
3 years ago
6

PLEASE HELP PLEASE PLEASE

Mathematics
1 answer:
Umnica [9.8K]3 years ago
3 0

2x - 39 = x - 10

Subtract x from both sides

x - 39 = -10

Add 39 to both sides

x = 29

Answer

x = 29

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Can you help me how to solve this problem ? thank you
Art [367]
Since BCDEF is regular, we know right away that x=\dfrac{360}5=72 because the measures of all exterior angles of any regular polygon add to 360 degrees; they are all of equal measure here, so we divide 360 by 5.

For the pentagon BCIHG, the same is true, which means we have the equation

\underbrace{72}_x+\underbrace{72}_{\angle_{ext}BCD}+\underbrace{90}_{\angle_{ext}CIH}+\underbrace{(180-y)}_{\angle_{ext}IHG}+\underbrace{68}_{\angle_{ext}HGB}=360\implies y=122

So x+y=194.
8 0
3 years ago
3 feet of snow fell in 1 2/3 hours. What was that rate in inches per hours?
dalvyx [7]

Answer:

21 \frac{3}{5}in/hr

Step-by-step explanation:

Distance of snow fall  = 3ft

Time taken  = 1\frac{2}{3}hrs

Unknown:

Rate of snowfall = ?

Solution:

The rate of the snowfall is the same as the speed of the fall;

  Rate of snowfall  = \frac{distance of snowfall}{time}

Convert the ft to inches;

             1ft  = 12inches

             3ft  = 3 x 12  = 36inches

Input the parameters and solve;

           Rate of snowfall  = \frac{36}{\frac{5}{3} }   = 36 x \frac{3}{5} = 21 \frac{3}{5}in/hr

         

7 0
3 years ago
What is the equation of the graphed line written in standard form?
erastovalidia [21]
 The equation is y=mx+b, m being the slope of the line and b being the y-intercept.
7 0
4 years ago
Read 2 more answers
The finishing times of two runners for several one-mile races, in minutes, are shown in the box and whisker plots.
Dmitrij [34]

Answer:

跑着2

Step-by-step explanation:

6 0
3 years ago
Answer to –1.7+5.2(5.5+–10.8a)
maks197457 [2]

Answer:

26.9 - 56.16a

Step-by-step explanation:

-1.7 + 5.2(5.5 - 10.8a)

use the distributive property

-1.7 + 28.6 - 56.16a

combine like terms

-1.7 + 28.6 = 26.9

<em><u>26.9 - 56.16a</u></em>

plz mark as brianliest if correct!!!

4 0
3 years ago
Read 2 more answers
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