3 years ago

Runners Competing in the 100 m Dash

Mathematics

1 answer:

nadezda [96]3 years ago

6 0

Not enough info. Cannot solve unless given more.

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2(a+7) - 7 = 9 what is the answer

REY [17]

Answer:

The answer is 1

Step-by-step explanation:

2(a+7)−7=9

Step 1: Simplify both sides of the equation.

2(a+7)−7=9

(2)(a)+(2)(7)+−7=9(Distribute)

2a+14+−7=9

(2a)+(14+−7)=9(Combine Like Terms)

2a+7=9

Step 2: Subtract 7 from both sides.

2a+7−7=9−7

2a=2

Step 3: Divide both sides by 2.

a=1

7 0

3 years ago

What is four fifths plus eight ninths

Jobisdone [24]

4/5 + 8/9. First we have to find a common denominator for $\frac{4}{5}$ and $\frac{8}{9}$ . $\\ \frac{4*9}{5*9}= \frac{36}{45} \ and \ \frac{8*5}{9*5}= \frac{40}{45} \\$ Now we are going to add: $\frac{36}{45}+ \frac{40}{45}= \frac{76}{45}$ Make $\frac{76}{45}$ a mixed number: $\frac{76}{45}=1 \frac{31}{45}$ So the answer is $\boxed{1 \frac{31}{45}}$

6 0

3 years ago

Pls help me and explain why it’s that answers.

maw [93]

The answer is the third one

3 0

3 years ago

What is 84.8 divided by blank=10.6

katrin [286]

Answer:

Step-by-step explanation:

just do 84.8 / 10.6 and you get the blank number

5 0

4 years ago

The principal observes 8th grade the following day. Of the 120 students, 42 brought their lunch from home, 72 purchased lunches,

Amanda [17]

I think

Step-by-step explanation:

by finding each chart such as if there are 120 7th graders and 180 8th graders he can use the same numbers from the 7th graders and compare each percentage to the 8th-grade kids and get a close enough answer

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2 years ago