60 = −2(−10 − 4x) what is the answer show step by step

Mathematics

2 answers:

Papessa [141]2 years ago

8 0

That’s the answer with steps

Pavel [41]2 years ago

5 0

Answer: x = 5

Step-by-step explanation:

first, divide both sides.

30 = -(-10 - 4x)

then, remove the parenthesis.

30 = 10 + 4x

them, move the terms.

=4x = 10 - 30

finally, divide both sides.

-4x = 20

solution: x = 5

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12x>9(2x-3)-15 solve for x show step by step solution

BlackZzzverrR [31]

12x > 9(2x - 3) -15

12x > 9*2x - 3*9 - 15

12x > 18x - 27 - 15

12x > 18x - 42

12x - 18x > -42

-6x > - 42 Divide both sides by -6 and the sign changes

x < -42/-6

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I hope this helps.

4 0

3 years ago

Read 2 more answers

A gondola (cable car) at a ski area holds 50 people. Its maximum safe load is 10000 pounds. A population of skiers has a distrib

fenix001 [56]

Answer: 0.03855

Step-by-step explanation:

Given :A population of skiers has a distribution of weights with mean 190 pounds and standard deviation 40 pounds.

Its maximum safe load is 10000 pounds.

Let X denotes the weight of 50 people.

As per given ,

Population mean weight of 50 people = $\mu=50\times190=9500\text{ pounds}$

Standard deviation of 50 people $=\sigma=40\sqrt{50}=40(7.07106781187)=282.84$

Then , the probability its maximum safe load will be exceeded =

$P(X>10000)=P(\dfrac{X-\mu}{\sigma}>\dfrac{10000-9500}{282.84})\\\\=P(z>1.7671-8)\\\\=1-P(z\leq1.7678)\ \ \ \ [\because\ P(Z>z)=P(Z\leq z)]\\\\=1-0.96145\ \ \ [\text{ By p-value of table}]\\\\=0.03855$