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Rainbow [258]
3 years ago
14

For the given word problem, identify the specific quantity. An environmental group is planting trees in a park. The group wants

to plant 32 trees in all and have already planted 11 trees. If the group can plant 3 trees per hour, how long will it take it to finish? 11 3 32 t
Mathematics
1 answer:
Trava [24]3 years ago
3 0

Answer:

32

Step-by-step explanation:

its the end amount/quanity

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Please help me in question 9 and please explain it
lesya692 [45]
If the battery was used for 11 hours, then the value of x we use is 11
Subtitute x with 11 in the equation
y = 100 - 8.9x
y = 100 - 8.9(11)
y = 100 - 97.9
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the answer is option b
7 0
2 years ago
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If the mean heights of three groups of students consisting of 20,16 and 14 students are 167m, 150m and 1.40m respectively find t
Aleonysh [2.5K]

Answer:

1.54 m

Step-by-step explanation:

Given information:

<u>Three groups of students</u>

  • 20 students with a height of 1.67 m
  • 16 students with a height of 1.50 m
  • 14 students with a height of  1.40 m

⇒ Total number of students = 20 + 16 + 14 = 50

To find the <u>mean height</u> of all the students, <u>divide</u> the <u>sum of all the students' heights</u> by the <u>total number of students</u>:

\begin{aligned}\implies \sf mean\:height & =\dfrac{(20 \times 1.67)+(16 \times 1.50)+(14 \times 1.40)}{50}\\\\ & = \dfrac{33.4+24+19.6}{50}\\\\ & = \dfrac{77}{50}\\\\ & = 1.54\:\: \sf m\end{aligned}

Therefore, the mean height of all the students is 1.54 m

6 0
1 year ago
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What is the smallest number by which 864 must be multiplied with to make the quotient a perfect cube?
In-s [12.5K]

Answer:

Number is two

Step-by-step explanation:

First of all we find the closest factors of 864 which are 32 x 27

Simply them we have

32 x 27 = 2^5 x 3³

So

Next we know that to be aperfect cube, each exponent needs to be equally divided by divisible by 3.

So If we multiply 864 x 2 we get

Then

1728 = 2^6 x 3³

So if we finally

Take the cube root of that is 2²* 3^1 = 4 x 3= 12

So 2² x 3^1

So if we equate the powers we have the answer as 2.

3 0
2 years ago
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Ramona has a total of 119 sand dollars and will disperse them equally to x friends. Take the total (119) and divide it by x friends:   119/x = amount.
6 0
3 years ago
Find the present value of Php 50,000.00 due in 4 years if money is invested at 12% compounded semi-annually.
AlexFokin [52]
In this case, Php 50,000 money invested for 4 years with 12% rates. If the rate is 12% compounded semi-annually that means it would be 6%/ 6 months. Then the amount of money after 4 years would be:

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