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dezoksy [38]
2 years ago
12

Please help!!!!!! AAA

Mathematics
2 answers:
Citrus2011 [14]2 years ago
8 0
First answer is the correct answer
JulsSmile [24]2 years ago
7 0

Answer:

D is correct

Step-by-step explanation:

1/12^3

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Marge purchased bicycle helmets and tire pumps. Each helmet cost $12.00 and each pump cost $8.00. She purchased a total of 18 it
algol [13]

Answer:

11

Step-by-step explanation:

Let the no. of helmet be x

cost of 1 helmet = $12.00

cost of x helmet = $12.00*x = $12x

Let the no. of tire pumps be y

cost of 1 tire pumps = $8.00

cost of x tire pumps = $8.00*y = $8y

Given that total no. of helmet and pump is 18

thus

x + y = 18

y = 18-x

also given

total money spent is $188

thus

12x+8y = 188

using y = 18 - x

we have

12x + 8(18-x) = 188

=> 12x+ 144 - 8x = 188

=> 4x = 188-144 = 44

=> x = 44/4 = 11

Thus, no of helmet bought by Margo is 11.

7 0
3 years ago
-4 3/5 divided by 1 1/5 as a mixed number or simplified
WITCHER [35]
-23 over 5 ÷ 11 over 5
-23 × 5 over 5 × 5
-115 over 55


Therefore, your answer would be: -2 and 1 over 11
4 0
4 years ago
Read 2 more answers
Solve:
Temka [501]

Answer:

a= -5

Step-by-step explanation

PEMDAS

8 0
3 years ago
What is four blank four blank four equals 4
attashe74 [19]
4 - 4 + 4 = 4.
four minus for plus four equals four.
3 0
3 years ago
QUESTION 3 of 10: Stock returns vary from year to year. The more variance a stock displays the greater the potential risk. These
Dahasolnce [82]

Answer:

The variance of these investment returns is 74

Step-by-step explanation:

Given:

Series =  10, 30, 15, 5, 20

To Find:

variance of a series = ?

Solution:

The variance of the series = Var\left(X\right)=\sum _{i=1}^n\frac{\left(x_i-\bar{x}\right)^2}{n}

\bar{x} = \frac{10+30 +5+15 + 20}{5}

\bar{x} = \frac{80}{5}

\bar{x} =16

Now (x_i -\bar{x})^2 = (10 -16)^2 + (30 -16)^2 + (5 -16)^2 +(15 -16)^2 +(20 -16)^2

= (-6)^2 + (14)^2 + (-11)^2 + (-1)^2+ (-4)^2

= 36  + 196 +121 +  1+ 16

=  370

Now

Var\left(X\right)=\frac{370}{5} =  74

6 0
3 years ago
Read 2 more answers
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