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Serggg [28]
3 years ago
9

–12(x + 3) - 4(5 - 2x) = 20

Mathematics
2 answers:
bekas [8.4K]3 years ago
8 0
-12x -36 -20 +8x = 20
-12x + 8x = 20 + 36 + 20
-4x = 76
x = -19
12345 [234]3 years ago
7 0

Answer:

x = -19

Step-by-step explanation:

1. make parentheses disappeared using distribution law.

- 12x - 36  - 20 + 8x = 20

2. sum up b numbers and x

- 4x - 56 = 20

3. separate x and number to two sides of the equation

- 4x = 76

4. both side divided by -4

x =  - 19

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Hence the value for the mean is  80 and the standard deviation for the original sample is 8.

Step-by-step explanation:

Mean = 83-3 = 80.

Here the standard deviation didn't change = 8.

5 0
3 years ago
Pls help asap thx alot​
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Answer:

35

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A triangle has a total of 180 degrees. To find the missing angle, we subtract 113 and 32 from 180 to get the answer.

6 0
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postnew [5]

Answer:

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5 0
3 years ago
Fresh Market is selling black truffles for $15 per ounce and white truffles for $35 per ounce. You bought a package that weighed
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3 years ago
Carl is standing at the top of 35 Ft cliff looking down at a rock for motion in the sea. He estimates the angle of depression is
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The horizontal distance between Carl and the rock at sea is approximately 60.62ft.

Data;

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  • Opposite = 35
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<h3>Trigonometric Ratio</h3>

Given the angle of depression from his point to the sea, we can use trigonometric ratio to calculate for the horizontal distance from his location to the bottom of the sea.

SOHCAHTOA

Since we have the value of angle and opposite and we need to calculate the adjacent side of the right-angle triangle, we can use the tangent of the angle to this effect.

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The horizontal distance between Carl and the rock at sea is approximately 60.62ft.

Learn more on trigonometric ratio here;

brainly.com/question/12172664

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