4 years ago

A negative number plus another negative number equals a positive number. True False

Mathematics

1 answer:

Akimi4 [234]4 years ago

8 0

Answer:

Step-by-step explanation:

false

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An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 4 ft long with a diameter of 2.2 ft. S

gavmur [86]

Answer:

$8\:\mathrm{minutes}$

Step-by-step explanation:

The volume of a cylinder is given as:

$r^2\cdot\pi\cdot h$

Since the diameter is $2.2$ , the radius is $\frac{2.2}{2}=1.1$ .

Therefore, the volume of this cylinder is:

$1.1^2\cdot 3.14\cdot 4=15.1976\:\mathrm{ft^3}$ , using $\pi=3.14$ as requested in the problem.

Since the tank is emptied at a constant rate of $1.5\:\mathrm{ft^3\:per\:minute}$ , it will take

$\frac{15.1976}{1.5}=7.5988=\fbox{$8\:\mathrm{minutes}$}$ to empty the tank.

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3 years ago

Identify the number of terms in the expression. Type the answer in the space provided.

nadya68 [22]

Answer:

Step-by-step explanation:

Terms are separated from one another by + and/or - signs. In this case neither appears, so the given expression constitutes a single term.

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3 years ago

the average waiting time to be seated for dinner at a popular restaurant is 23.5 minutes with a standard deviation of 3.6 minute

creativ13 [48]

Look it up on google

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3 years ago

Question 1 <br> Which triangle is NOT similar to the other three?

Agata [3.3K]

Answer: i think its c

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3 years ago

Read 2 more answers

Can you help me find MAD for this

White raven [17]

Answer:

Step-by-step explanation:

(3+15+21+13)/4 = 13

13 - 3 = 10

15 - 13 = 2

21 - 13 = 8

13 - 13 = 0

(10+2+8+0)/4 = 5

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3 years ago