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2 years ago

Which expression demonstrates the distributive property applied to the expression 4(3 + 7)?

Mathematics

2 answers:

____ [38]2 years ago

7 0

D would be the answer, since in this case, 4 would distribute to the 3, and the 7.
4(3) + 4(7)

algol [13]2 years ago

5 0

D. Because you multiply each term by 4 but they're still added together :)

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what is the probability of rolling 15 with a pair of dice? answer in likely, unlikely, equally likely, or impossible

aleksley [76]

it is clearly impossible

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2 years ago

If a swimmer swims 85.4 yards in 5 minutes, how many meters will he/ she swim in 70 seconds

DaniilM [7]

Distance swam in 5 minutes = 85.4 yards

Since, 1 min = 60 seconds and 1 yard = 0.91 meter

5 minutes = $5 \times 60 = 300$ seconds

85.4 yards = $85.4 \times 0.91 = 77.7$ meters

So, Distance swam in 300 seconds = 77.7 meters

Now, we will use unitary method to determine the distance swam in 70 seconds.

Distance swam in 1 second = $77.7 \div 300$ = 0.26 meter

So, Distance swam in 70 seconds = $70 \times 0.26$

= 18.2 meters

Therefore, the swimmer took 70 seconds to cover the distance of 18.2 meters.

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2 years ago

The percent of working students increased 8.1 to 40.5 what was the present prior to increase

Dmitrij [34]

Answer:

32.4

Step-by-step explanation:

prior + 8.1 = 40.5 . . . . . . seems to model the problem statement

prior = 32.4 . . . . . . . subtract 8.1 from both sides

Prior to the increase the percent was 32.4.

_____

Comment on the problem statement

When you're talking about a percentage increase in a percentage, it is almost never clear whether you're talking about the percentage of the underlying number, or the percentage of the percentage.

Here, we assume the 8.1 is a percentage of working students, not a percentage of the percentage of workings students. If you actually intend the latter, the percentage before the increase was about 37.465%.

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2 years ago

I will award 30 points to anyone that can solve this. If i fail i have to retake

Lemur [1.5K]

Answer: it’s all in the pictures hope this helps!!:)

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

PLEASE HELP ME SLOVE Answers A.72 B.6 C.12 D.4/41

Makovka662 [10]

${ \sf{ \red{using \: pythagoras \: theorem}}} \\ \\ { \sf {(20)}^{2} - {(16)}^{2} = {x}^{2} } \\ \\ { \sf{400 - 256 = {x}^{2} }} \\ \\ { \sf{144 = {x}^{2} }}$

${ \sf{x = \sqrt{144} }} \\ \\ { \boxed{ \boxed{ \green{x = 12}}}}$

option (C)

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2 years ago