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3 years ago

Jacob earned $370 walking dogs over the summer. He put 30% of what he earned into his savings account.

Mathematics

2 answers:

Verdich [7]3 years ago

8 0

I don't think I need to explain it, the answer is $111

JulijaS [17]3 years ago

3 0

Answer: $111

Step-by-step explanation:

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I need to know what is 7 percent of 98800

Ray Of Light [21]

Answer:6,916

6,916

How to find the number:

The decimal of seven percent is 0.07. Take that times 9880

8 0

3 years ago

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 =

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

Thus , the probability its maximum safe load will be exceeded = 0.03855

3 0

3 years ago

< 5 and <7 are vertical angles.

marishachu [46]

Answer:

value of x = 19°

Step-by-step explanation:

we know that vertical opposite angles are equal hence Angle 5 = Angle 7

so,

5x+10 = 105°
5x = 95°
x = 19°

hence value of x = 19°

7 0

3 years ago

Daves first three test scores in algebra were 84%, 88%, and 90%. what does he need to earn on the next test so that his average

defon

Answer:

C gives you 90.2

Step-by-step explanation:

84+88+90+100=362

362/4=90.2

8 0

3 years ago

The quotient of a number and 7 is greater than or equal to 20

Rina8888 [55]

Answer:

a is greater than or equal to 140

Step-by-step explanation:

Multiply both sides by 7, which cancels out the 7 and turns 20 into 140

6 0

2 years ago