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Sergeeva-Olga [200]
3 years ago
7

Pls help I need a good grade asap

Mathematics
2 answers:
Kipish [7]3 years ago
7 0

Answer:

8n+12=36, triplets are 8 years old

Step-by-step explanation:

total age is 36

one of them is 12 years old so -> 36-12 = 24

three triplets so 24/3 = 8

there are three 8 years olds and one 12 year old. n = 3

lions [1.4K]3 years ago
6 0

Answer:

Step-by-step explanation:

3n + 12 = 36

3n = 24

n = 8 (the triplets)

another child: 12 years

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The length of a rectangle is eight more than triple the width. If the perimeter is 168 inches, find the dimensions.
defon

Answer:

P= 2(3W + 7) + 2(W) = 110.

                         P= 6W + 14 + 2W = 110.

                           = 8W + 14 = 110.

                           = 8W = 110 - 14 = 96

                                 W = 96/8 = 12- inches.

Now solve for (L) by L = 3W + 7 = 3(12) + 7 = 36 + 7 = 43- inches

7=43 inches if this help.can u mark me brainliest

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2 years ago
In Mrs. Diego’s class, 75% of all the students in the class participated in a clean up day. There are 32 students in the class.
OLEGan [10]
The answer to this question is c 24.
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3 years ago
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Find the area of a semicircle.<br>a 4.7 yd​
Anika [276]

Answer:

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Step-by-step explanation:

Dont know if this helps but heres something.

A = πr²/2 = 1938.900992 * π [yd²] ≈ 4.7 [yd²]

Use this if you want to

https://www.omnicalculator.com/math/semicircle-area

4 0
4 years ago
Explain (1+y)^2 how does it turn into 1+2y+y^2 ? i don't understand
Greeley [361]
I will show you the steps on how you get that answer and if you have any questions after that let me know and I'd be more than happy to help answer them for you.
The first step for solving (1 + y)² is to use the equation (a + b)² = a² + 2ab + b² to expand the expression.
1² + 2 × 1y + y²
1 raised to any power equals 1,, so remove the power.
1 + 2 × 1y + y²
Calculate the product of 2 × 1y.
1 + 2y + y²
Finally,, use the commutative property to reorder the terms.
y² + 2y + 1
Let me know if you have any further questions.
:)
6 0
3 years ago
V
aleksley [76]

Answer:

a=1.66

b=8368.12

Step-by-step explanation:

hope it helps

8 0
2 years ago
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