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prohojiy [21]
3 years ago
5

What is the product of −214 and 212?

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
8 0
Do you mean, -214/212. or, 45,368/1 ??


Sunny_sXe [5.5K]3 years ago
6 0

Answer:

-5\frac{5}{8}

Step-by-step explanation:

Given : -2\frac{1}{4} and 2\frac{1}{2}

To Find : What is the product

Solution :

Numbers are  -2\frac{1}{4} and 2\frac{1}{2}

We are supposed to find the product

\Rightarrow -2\frac{1}{4} \times 2\frac{1}{2}

\Rightarrow \frac{-9}{4} \times \frac{5}{2}

\Rightarrow \frac{-45}{8}

\Rightarrow -5\frac{5}{8}

Hence the product is -5\frac{5}{8}

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Hello,

(-9)⁴= (-9).(-9).(-9).(-9)= 81.81 = 6561
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A bag contains 7 red marbles, 8 blue marbles and 4 green marbles. If three marbles
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For which would you draw a solid boundary line and shade to the right?
PilotLPTM [1.2K]

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x ≤ -3

Step-by-step explanation:

For solid lines you would do ≤ or ≥, then for shading on the right side you would need < or ≤

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The Girl Scouts are going to the pool it will cost him $2.50 per person to go and there are 10 people going
UkoKoshka [18]

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I would cost them $25.00 dollars

Step-by-step explanation:

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Read 2 more answers
Wilma can mow a lawn in 60 minutes. Rocky can mow the same lawn in 40 minutes. How long does it take for both Wilma and Rocky to
UNO [17]
<h3>Answer:  24 minutes</h3>

===================================================

Explanation:

Let's say the lawn is 120 square feet. I picked 120 as it is the LCM (lowest common multiple) of 60 and 40.

Since Wilma can mow the lawn in 60 minutes, her rate is 120/60 = 2 sq ft per minute. In other words, each minute means she gets 2 more square feet mowed. Rocky can do the full job on his own in 40 minutes, so his rate is 120/40 = 3 sq ft per minute.

Their combined rate, if they worked together (without slowing each other down), would be the sum of the two rates. So we get 2+3 = 5 sq ft per minute as the combined rate. The total time it would take for this 120 sq ft lawn is 120/5 = 24 minutes.

--------------------------

Another approach

Wilma takes 60 minutes to do the full job, so her rate is 1/60 of a lawn per minute. Rocky's rate is 1/40 of a lawn per minute. Their combined rate is

1/60 + 1/40 = 2/120 + 3/120 = 5/120 = 1/24 of a lawn per minute

x = number of minutes

(combined rate)*(time) = number of jobs done

(1/24)*x = 1

x = 1*24

x = 24 is the time it takes if they worked together without getting in each other's way.

Effectively, we are solving the equation

1/A + 1/B = 1/C

with

A = time it takes Wilma to do the job on her own

B = time it takes Rocky to do the job on his own

C = time it takes the two working together to get the job done

The equation above is equivalent to C*(1/A + 1/B) = 1 or (1/A + 1/B)*C = 1.

So basically you find the value of 1/A + 1/B, then find the reciprocal of this to get the value of C.

3 0
3 years ago
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