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2 years ago

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7 indian and 4 chinese finish a job in 5 days. 7 japanese and 3 chinese finish the same job in 7 days. given that the efficiency

of each person of a particular nationality is same but different from others.one chinese,one indian and one japanese will complete the work in

1 answer:

Vikentia [17]2 years ago

3 0

The answer is
20 7/12

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A car company charges a $45 fee to use their vehicle. They also charge an additional $0.35 per mile 9 (m). write a function that

Brrunno [24]

$45 constant
$0.35 per mile
c is cost
m is miles
c=.35m+45

5 0

3 years ago

Linda is staining the wooden floor of a court. The court is in the shape of a rectangle. Its length is 33 feet and its width is

Luda [366]

Answer:

14

Step-by-step explanation:

she would need 14 cans of paint because you find the area then divide by 115

8 0

2 years ago

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When Lorenzo finished his exam last week, he thought the test was over. But the instructor put z-scores on each student's paper

Anarel [89]

Answer:

Lorenzo's score on exam was 75.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 61

Standard Deviation, σ = 8

We are given that the distribution of test score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

z-score = 1.75

We have to find the value of x.

Putting values, we get

$1.75 = \dfrac{x - 61}{8}\\\\x = 1.75(8) + 61\\x = 75$

Thus, Lorenzo's score on exam was 75.

5 0

3 years ago

Can someone help find the area and perimeter of this??

aalyn [17]

Answer:

area = 45 square meters

circumference = 33 meters

Step-by-step explanation:

lmk if you need explanation

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2 years ago

You have 704 grams of a radioactive kind of praseodymium.If it's half life is 17 minutes,how much will be left after 69 minutes?

grigory [225]

There will be nothing left

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3 years ago