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3 years ago

I was training the cross country team. Every week I expected the students to run 12 3/4 miles every week. If the kids ran

Mathematics

1 answer:

Scrat [10]3 years ago

7 0

Answer:

x = 2.55 miles per day

Step-by-step explanation:

In English: 5 days * 'x' miles per day = 12 & 3/4 miles total

In algebra: 5x = 12.75

x = 12.75 ÷ 5

x = 2.55 miles per day

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Which expression is equivalent to (3b + 2r) + (4b + r)?

Mice21 [21]

(3b + 2r) + (4b + r)

3b+4b +2r+r

7b +3r

Choice B

4 0

3 years ago

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Expand and simplify 10-3(3x-2)

JulijaS [17]

Answer:

−9+16

Step-by-step explanation:

1. 10−3(3−2)

10−9+6

2. Add the numbers

3. Rearrange terms

3 0

3 years ago

What fraction is equivalent to 3/9

cluponka [151]

Answer:

There are infinity equivalent fractions to 3/9

Step-by-step explanation:

1 /3, 2 /6, 3/ 9, 4 /12, 5/ 15, 6 /18, 7/ 21, 8/ 24, 9 /27, 10/ 30, 11/ 33, 12/ 36, 13/ 39, 14 /42, 15 /45..........

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3 years ago

Help with steps questions on image

Sveta_85 [38]

Answer:

Step-by-step explanation:

all odd numbers possible: 1, 3, 5, 7

__ __ __ __

there are 4 possibilities for the first blank

for the second blank there are 4-1 = 3 possibilities as one of the numbers will have been used

for the third blank there are 4-2 = 2 possibilities as 2 of the numbers have been used

for the last blank there is only 1 possibility

so the number of solutions possible is 4 x 3 x 2 x 1 = 24

7 0

3 years ago

A $20,000 business computer depreciates at a rate of 15% per year. Which of the following equations would model the value of the

elena-s [515]

Answer:

$f(t)=20000(0.85)^t$

Step-by-step explanation:

So the initial value of the business computer is $20,000. It depreciates by 15% per year. This is exponential decay. The standard function for exponential decay is:

$f(t)=P(r)^t$

Where P is the initial value, r is the rate of decay, and t is the time in years.

Since the computer decreases by 15% per year, this means that each year, the computer will be 1-15% or 85% than its previous value.

Therefore, the equation that models the value of the computer is:

$f(t)=20000(0.85)^t$

4 0

3 years ago

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