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dolphi86 [110]
2 years ago
8

7,4,5,2x,11, is 15 find the value of x​

Mathematics
1 answer:
sergejj [24]2 years ago
4 0

Answer:

don't understand

but mean = <u>summation x</u>

total number

15=<u>7+4+5+2x+11</u>

5

15=<u>27+2x</u>

5

multiply both sides by 5

15×5=<u>2</u><u>6</u><u>+</u><u>2</u><u>x</u> ×5

5

75=26+2x

75-26=2x

<u>49</u>=<u>2x</u>

2. 2

x= 24.5

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Step-by-step explanation:

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3 years ago
Find the value of x in a triangle. x-20, x+10, x-20
tatyana61 [14]

The value of the angles should be. (x-40°). , (x-20°), (½x-10°) , not (x-40°) + (x-20°)+(½x-10°)

Sum of all the interior angles of a triangle is 180°.

So a equation can be made by the given data,

(x-40°) + (x-20°) + (½ x-10°) = 180°

x-40°+x-20°+½x-10° = 180°

2x+½x -60°-10° = 180°

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So the angles are

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The answer can be checked by putting the values of the angle we got in the second statement i.e. Sum of all the interior angles of a triangle is 180°.

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3 years ago
China generated 237.188 billion kilowatt-hours (kWh) of wind energy in 2018. The population in China in 2018 was 1.379 billion.
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Answer:

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