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shusha [124]
3 years ago
5

It takes 140 minutes to finish a 40-question math test. How many minutes does it take, on average, to solve each math problem? *

O 2 1/2 minutes 4 1/4 minutes O 3/4 minutes O 32 minutes​
Mathematics
2 answers:
BartSMP [9]3 years ago
8 0
<h3><em>The answer will be 3.5 minutes.</em></h3>

marissa [1.9K]3 years ago
6 0

Answer:

Step-by-step explanation:

Average = Questions / Time

Average = 140 / 40 = 14/4 = 7/2 = 3 1/2 = 3.5

None of the answers are the same as mine. I'm pretty sure min is correct. Ask your instructor what you should answer.

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Which shows 42^2 − 38^2 being evaluated using the difference of perfect squares method?
Basile [38]

Answer:

D

Step-by-step explanation:

a²  - b² ← is a difference of squares and is factored in general as

(a + b)(a - b)

42² - 38² ← is a difference of squares and factors as

42² - 38² = (42 + 38)(42 - 38) = 80(4) = 320 → D

3 0
3 years ago
Read 2 more answers
The Store's wholesale price of a t-shirt is $50. If the markup set by the store is 30%. Calculate the retail price set by the st
yan [13]

Answer:

$65.    

Step-by-step explanation:

Given:

The Store's wholesale price of a t-shirt is $50

The markup set by the store is 30%.

To find:

Calculate the retail price set by the store on the t-shirt.

Solution:

Wholesale price of a t-shirt =  $50

Markup % = 30

<em>First of all we will find the markup value with the help of markup percentage and then we will simply add the wholesale price and markup value of T-shirt</em>.

Markup value of T-shirt = 30\%\ 0f\ 50=\frac{30}{100} \times50=\frac{1500}{100} =\$15

Retail price of T-shirt = Wholesale price of a t-shirt + Markup value of T-shirt

Retail price of T-shirt = $50 + $15

Retail price of T-shirt = $65

Therefore, the retail price set by the store on the t-shirt is $65.                  

5 0
3 years ago
Round 3.38461370132 to the nearest hundred-thousandth.
qwelly [4]
I'm not really sure but I think it's 3.39
6 0
3 years ago
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The cafe where you work just ran out of coffee, and you are at the store to buy 112 pounds of coffee. You have put a can with 34
ycow [4]

Answer:

78

Step-by-step explanation:

The total you are buying is 112 pounds.  The can you have picked up is 34 pounds; this leaves

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7 0
3 years ago
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Three times the sum of a number and 5 is 4
galben [10]

i think it is 27 i did 5+4 then i did 9x3 and got 27


4 0
3 years ago
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