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2 years ago

What's the length of QR?

Mathematics

1 answer:

tigry1 [53]2 years ago

8 0

Answer:

using the pithagerum therom

a² + b² = c²

this formula is to find the side of your triangle with 2 sides already known

the answer is A) 17.7

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Ms. Johnson was grading Drake's test. Drake got 27 out of 30 questions correct. What percent is equivalent to the fraction of th

andreev551 [17]

27/30 as a percentage is 90%

5 0

3 years ago

{0, 1, 2, 3, 4, . . . , 148, 149, 150} How many members of the above set are multiples of 3 but not multiples of 5? *

umka2103 [35]

Answer:

The answer is 40.

Step-by-step explanation:

First you can simply just list the multiples of 3 from 1-150, then cancel out all the multiples of 5 so,

3, 6, 9, 12, 18, 21, 24, 27, 33, 36, 39, 42, 48, 51, 54, 57, 63, 66, 69, 72, 78, 81, 84, 87, 93, 96, 99, 102, 108, 111, 114, 117, 123, 126, 129, 132, 138, 141, 144, 147.

15,30,45, 60,75,90, 105, 120,135 and 150 are multiples of 5 and so they are not included.

3 0

3 years ago

Tom and Bob start to walk towards each other at 18 feet per minute and 12 feet per minute respectively. In how many minutes will

kogti [31]

Answer:

19 minutes

Step-by-step explanation:

Tom and Bob start to walk towards each other at 18 feet per minute and 12 feet per minute respectively. Per one minute they together walk

18 + 12 = 30 feet.

Since the distance betwewen them is 570 feet, then it takes them

$\dfrac{570}{30}=19\ \text{minutes}.$

4 0

3 years ago

If a right triangle has the length of 3 cm and 2 cm what is the hypotenuse

Alik [6]

It has to be at least 3cm to make it a right triangle

6 0

3 years ago

A weather balloon is being filled at a rate of r(t) = 18(1 + 2t) 2 liters per second, starting with a volume of 0 liters at time

marin [14]

Answer:

The volume after 1 minute is 5314680 liters.

Step-by-step explanation:

We are given the following in the question:

$\dfrac{dV}{dt}=r(t) = 18(1 + 2t)^2$

where r(t) is the rate in liters per second starting with a volume of 0 liters at time t = 0.

We have to find the volume of balloon after 1 minute.

We evaluate it in the following manner:

t = 60 and t = 0

$V =\displaystyle\int^{60}_0 18(1 + 2t)^2~dt\\\\V = 18 \bigg [ \dfrac{(1+2t)^3}{(3)(2)}\bigg ]^{60}_0\\\\V = 3[(1+2(60))^3-(1+2(0))^3]\\V = 3(1771560)\\V = 5314680$

Thus, the volume after 1 minute is 5314680 liters.

3 0

3 years ago