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IRISSAK [1]
3 years ago
15

30 percent of the class were chewing gum.12 were chewing gum how many were in the class

Mathematics
1 answer:
DochEvi [55]3 years ago
7 0
Alright. For the first one, we must think, thirty percent of what number is equal to twelve? We can right that in equation form as
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Find the 7th term of the geometric sequence a3 =128,r=-1/4
kenny6666 [7]

Answer:

Step-by-step explanation:

The general formula for this sequence is a(n) = a(1)*(-1/4)^(n - 1).  We don't yet know a(1).

If a(3) = 128, then 128 = a(1)*(-1/4)^(3 - 1), or

128 = a(1)*(1/16)

and so a(1) = 128/16

resulting in the specific formua a(n) = 8(-1/4)^(n - 1)

Now let's find a(7):

a(7) = 8(-1/4)^1 * (-1/4)^(6)

or

a(7) = 8(-1/4)^7

7 0
3 years ago
I NEED HELP PLEASE HELP ME
alex41 [277]

Answer:

Length should be 15 cm and width should be 5 cm

Step-by-step explanation:

5 * 3 = 15

15+15+5+5=40

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6 0
2 years ago
The temperature of an enclosure for a pet snake should be about 80°F, give or take 5°F. What are the maximum and minimum tempera
kap26 [50]

Answer:

The max is 85F

The min is 75F

Step-by-step explanation:

For the max 80+5=85F

For the min 80-5=75F

4 0
3 years ago
Read 2 more answers
1: Is 5 / 3(1-x) Equivalent to 8-8x<br><br> 2: Is 2(6 - 3x) equivalent to 2(3x) +x?
iris [78.8K]

Answer:

1. no. 2.no

Step-by-step explanation:

1.\frac{5}{3 - 3x}

= (5\3) × (1/1-x)

but 8-8x = 8(1-x)

2. 2(6-3x) = 12-6x =6(2-x)

2(3x) + x= 6x +x = 7x

4 0
3 years ago
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3 years ago
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