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serg [7]
3 years ago
13

I need this answered

Mathematics
1 answer:
omeli [17]3 years ago
8 0

Answer:

sum of all angle of triangle is equal to 180 degree

X + 34 + 31 =180

x+65=180

x=180-65

x=115

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Please finish this equation and write the answer​
olga55 [171]

Given:

The equation is:

2540=\dfrac{22}{7}r^2(20)

To find:

The solution for the given equation.

Solution:

We have,

2540=\dfrac{22}{7}r^2(20)

It can be written as:

\dfrac{2540\times 7}{22\times 20}=r^2

\dfrac{17780}{440}=r^2

\dfrac{889}{22}=r^2

Taking square root on both sides, we get

\sqrt{\dfrac{889}{22}}=r               [Radius cannot be negative]

r=6.3568145

r\approx 6.36

Therefore, the value of r is about 6.36 cm.

7 0
3 years ago
Find the number of permutations in the word “freezer".
GaryK [48]
There are seven letters in the word "FREEZER"
so, it would be: ⁷P⁶ = 7! / (7-6)! = 7! / 1!
= 7 * 6 * 5 * 4 * 3 * 2 
= 5040

In short, Your Answer would be 5040

Hope this helps!
7 0
3 years ago
Read 2 more answers
Find the value of 8(4+3)-21 divided by7
Doss [256]

Answer:

5

Step-by-step explanation:

First, let us simplify the expression on the left

8(4+3) - 21 = 8(7) - 21 = 8(7) - 3(7) = 7(8-3)

Divide this by 7 and you'll get 8-3 = 5

3 0
2 years ago
How many ways can 3 students be chosen from a class of 20 to represent their class at a banquet?
boyakko [2]
Slot method 20 options 3 slots First slot: 20 options Second slot: 19 options (one used up for 1st slot) Third slot: 18 (one less than last) Multiply them 20 times 19 times 18=6840 Answer is 6840 ways
3 0
3 years ago
Read 2 more answers
Anand needs to hire a plumber. He's considering a plumber that charges an initial fee of $ 65 $65dollar sign, 65 along with an h
user100 [1]

Answer:

Step-by-step explanation:

Basic Charge = $ 65

Rate per hour = $ 28

Number of hours = H

Rate for H hours = 28 *H = 28H

Equation:

65 + 28H ≤ 250

7 0
3 years ago
Read 2 more answers
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