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3 years ago

What Is the sum of the measures in degrees of the interior angles of a 30-gon

Mathematics

1 answer:

Mazyrski [523]3 years ago

7 0

The answer is 5040 degrees.

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What ratios that are equivalent to 4 to 7.

expeople1 [14]

4 to 7 = 4/7

5/8 is not.

12/20 = 6/10 = 3/5 . It is not equivalent.

8:14 = 4 : 7 . It is equivalent

5 to 10 = 1 to 2. It is not.

16/28 = 8/14 = 4/7. It is equivalent.

9 to 16 = 9 to 16. It is not equivalent.

So only 8:14 and 16/28 are equivalent to 4 to 7.

8 0

2 years ago

Read 2 more answers

What is the area of the figure? 40 ft2 84 ft2 96 ft2 can't be determined

mina [271]

Answer:

$A=80\ ft^2$

Step-by-step explanation:

we know that

The area of the figure is equal to the area of an isosceles triangle (has two equal sides) plus the area of a rectangle

step 1

Find the area of the triangle

The area of the triangle is equal to

$A=\frac{1}{2}bh$

we have

$b=16\ ft$

To find out the height of the triangle Apply the Pythagorean Theorem

$10^2=(16/2)^2+h^2$

solve for h

$100=64+h^2$

$h^2=100-64$

$h^2=36$

$h=6\ ft$

Find the area of triangle

$A=\frac{1}{2}(16)(6)$

$A=48\ ft^2$

step 2

Find the area of rectangle

The area of rectangle is equal to

$A=LW$

we have

$L=16\ ft\\W=2\ ft$

substitute

$A=(16)(2)=32\ ft^2$

step 3

Find the area of the figure

Adds the areas

$A=48+32=80\ ft^2$

5 0

3 years ago

a candidate received 430,500 of the 750,000 ballots cast in an election. What percent of the vote did this candidate receive?

Evgesh-ka [11]

430,500/ 750,000 = 0.574

0.574 x 100 = 57.4 %

5 0

3 years ago

A company is developing a new high-performance wax for cross country ski racing. In order to justify the price marketing wants,

andrew11 [14]

Answer:

A)Yes they should market the wax, because it melts before 55 seconds

C) Null hypothesis: mean <55 vs. Alternative hypothesis :mean =55

D) the value is 51.33 seconds

Step-by-step explanation:

The selected samples for the champion are : 57.9, 62.9, 50.6, 50.5,48.2,47.2,50.2 and 43.1

The mean is ;

Sum =57.9 + 62.9 + 50.6 + 50.5+48.2+47.2+50.2+ 43.1 =410.6

Mean= 410.6/8 =51.33= mean

Assuming Significant =0.05 thus applying this level will give you 51.28-51.38

if specifically, the mean time to finish their standard test course should be less than 55 seconds for a former Olympic champion, then the null hypothesis is correct

Then;

Null hypothesis: mean <55

Alternative hypothesis :mean =55

7 0

2 years ago

What is the least common multiple of 3 and 10? lcm(3, 10) =

Leno4ka [110]

Answer:

The anwser you are looking for is 30

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers