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DIA [1.3K]
3 years ago
9

Use one or more properties to rewrite each expression as an expression that does not use parentheses.

Mathematics
1 answer:
maria [59]3 years ago
4 0

Answer:

b + 9

Step-by-step explanation:

Given:

(b + 3) + 6

Required:

Rewrite expression without the parentheses.

SOLUTION:

(b + 3) + 6

Eliminate the parentheses

b + 3 + 6

Add like terms

b + 9

Thus:

(b + 3) + 6 = b + 9

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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
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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:

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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.

5 0
3 years ago
Solve the expression below, when y = 6<br><br> 5 ( 18 - y)
vivado [14]

Step-by-step explanation:

5 (18 - y) when y=6

5 (18 - 6)

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2 years ago
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a number cube numbered 1-6 is rolled 30 times and lands on an even number 18 times. How does this frequency compare to the expec
Korolek [52]

Answer:

The frequency is 3 more than expected

Step-by-step explanation:

There are 3 favourable outcomes: {2, 4, 6}

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probability of the number cube landing on an even number = favourable outcomes / possible outcomes = 3/6 = 1/2

If the cube is rolled 30 times, it is expected that in 1/2*30 = 15 times landed on an even number. The frequency: 18 is 3 more than expected

8 0
2 years ago
3. When Julie turned 10 years old, she decided to start saving to buy a car. Her mom gave her $100 to help her get
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Answer:

y = 35x + 100

Step-by-step explanation:

she started with $100, which is the y-intercept. After 7 months, she has 245 more. 245/7 = 35 per month. this is your slope.

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3 years ago
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