3 years ago

A car factory can build 14 cars in 4 hours. How many cars can it build in 7 hours?

1 answer:

3 0

You can do rate. 14 divided by 4 equals 3.5. A car factory can build one car in 3.5 hours. 3.5 multiply by 7 equals 24.5.

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Simplify the expression: (1 − 5i)(3 + 7i). 38 + 8i −32 + 8i 38 − 8i −32 − 8i

photoshop1234 [79]

Your answer is 38-8i because what you do is 1 times 3 and get 3 then 1 times 7i and get 7i then you do -5i times 3 and you get -15i then -5i times 7i and you get -35i2 and the square will cancel out the negative and make it 35 then add that to the 3 and you get 38 then take the -15i +7i and get -8 do your answer is 38-8i

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2 years ago

prove that the sum of two consecutive exponents of the number 5 is divisible by 30. If N ia the smaller of two consecutive expon

kotykmax [81]

Answer:

5^n-1

Step-by-step explanation:

5^n-1*30

3 0

2 years ago

.52 is 10 times as great as what number

WARRIOR [948]

Answer:

is it's right answer is 572

6 0

2 years ago

(5+4)3=4(3) +5(3) find the property

MAXImum [283]

Answer:

always true

Step-by-step explanation:

simplify (5+4)3

add 5 and 4.

multiply9 and 3= 4(3) + 5(3)

27=12+15

4 0

3 years ago

Read 2 more answers

I dont understand please help

DiKsa [7]

$2 \frac{1}{2}+(-2\frac{1}{4})$

This is equal to:

$2\frac{1}{2}-2\frac{1}{4}$

When you add a negative number, it turns into subtraction.

First, I would change it to mixed numbers:

$\frac{5}{2}-\frac{9}{4}$

Now, you need to change the denominators to make sure they are the same on both fractions. I changed the first fraction's denominator to 4 so they match. You can do this by multiplying the numerator by 2:

$\frac{10}{4}-\frac{9}{4}$

Now, you simply subtract:

10-9=1

1/4 is your answer.

I hope this helps :)

3 0

2 years ago