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Sladkaya [172]
3 years ago
7

How many cans of paint are needed to cover an area of 2200 square units if one can of paint covers in area 400 square units

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
5 0

Answer:

6

Step-by-step explanation:

You have a total area of 2,200 sq units to cover... and each can of paint covers 400 sq units.  So, you'll need:

2200 sq units / 400 sq units/can = 5.5 cans

In such problems, we always round up, since you will need 5 full cans of paint, and half of a 6th can.

So, in total you will need 6 cans of paint to cover all 2,200 sq units.

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Stacy rolls a pair of six-sided fair dice.
insens350 [35]

Answer:

Pr(the sum of the numbers rolled is either a multiple of 3 or an even number)=\frac{2}{3}

Step-by-step explanation:

Let A be the event "sum of numbers is multiple of 3"

and B be the event "sum is an even number".

As our dice has six sides, so the sample space of two dices will be of 36 ordered pairs.

|sample space | = 36

Out of which 11 pairs have the sum multiple of 3 and 18 pairs having sum even.

So Pr(A)= \frac{11}{36}

and Pr(B)= \frac{18}{36}

and Pr(A∩B) = \frac{5}{36}, as 5 pairs are common between A and B.

So now Pr(A or B)= Pr(A∪B)

                            = Pr(A)+Pr(B) - Pr(A∩B)

                            = \frac{11}{36} + \frac{18}{36} - \frac{5}{36}

                            = \frac{24}{36}

                            = \frac{2}{3}

7 0
3 years ago
Find the average rate of change of f(x)=-x2+2x+2 from x=2 to x=6
Darina [25.2K]
Use photomath it’s an app on the app store
6 0
3 years ago
HEY CAN ANYONE PLS ANSWER DIS MATH QUESTION!!!!!!!
GenaCL600 [577]

Answer:

Up to 10

Step-by-step explanation:

  • Cost of fish = $3.99
  • Limit of money = $40
  • Number of fish = x

<u>Inequality:</u>

  • 3.99x ≤ 40
  • x ≤ 40/3.99
  • x ≤ 10.02
3 0
2 years ago
What is the value of x in the equation 1.5(x + 4) – 3 = 4.5(x – 2)? 3 4 5 9
ICE Princess25 [194]

1.5(x+4)-3=4.5(x-2)

First, distribute 1.5 into x and 4, and 4.5 into x and -2, to get rid of the parentheses. Everything that we do to solve this equation is to isolate x to solve for its value.

1.5x+6-3=4.5x-9

Combine like terms on both sides (6-3).

1.5x+3=4.5x-9

Subtract 1.5x from both sides.

3=3x-9

Add 9 to both sides.

12=3x

Divide both sides by 3.

4=x

The answer is 4.

I hope this helps :)

7 0
3 years ago
Read 2 more answers
Use the distributive property to write an expression equivalent to 8(35).
Debora [2.8K]

Answer:

280

Step-by-step explanation:

All you have to do is multiply 35 by 8 to get 280.

I am joyous to assist you anytime.

3 0
3 years ago
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