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vlabodo [156]
3 years ago
7

Sarah baby-sat 7 times as many hours during summer break as she did during spring break. She baby-sat a total of 56 hours during

both breaks. How many hours did Sarah baby-sit during spring break?
Mathematics
2 answers:
lozanna [386]3 years ago
8 0

Answer:

your answer will be 8

Step-by-step explanation:

8x7 is 56

kotykmax [81]3 years ago
3 0
I wanna say the answer could be 8
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What is the sales tax of a $178.90 video game system is the tax rate is 3.75%
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Hope this helps!
3 0
3 years ago
Please help and show working (please)
Alexxandr [17]

In mathematical notation, ∑ means summation. So wherever you see the symbol, you have to sum over all elements in the set. Let's solve the question.

a. ∑m means, to sum all elements in the set m: ∑m = 12 + 15 + 20 + 30 = 77

b. ∑f^{2} means to sum all elements in the set f as the square of the elements f = 5^{2} + 9^{2} + 10^{2} + 16^{2} = 25 + 81 + 100 + 256 = 462

c. ∑mf means to sum all elements as the product of the elements of m and f = (12×5) + (15×9) + (20(12^{2}(5)) + (15^{2}(9)) + (20^{2}(10)) + (30^{2}(16)) = 2114510) + (30×16) = 875

d. ∑m^{2}f means to sum all elements as the product of the square of m and f = ((12*12)(5)) + ((15*15)(9)) + ((20*20)(10)) + ((30*30)(16)) = 21145

4 0
3 years ago
Simplify this expression.<br><br> -2 &lt; -1.5p - 8
morpeh [17]

-2 < -1,5p - 8

-1,5p - 8 > -2

-1,5p > -2 + 8

-1,5p > 6 / : (-1,5)

<u>x</u><u> </u><u><</u><u> </u><u>4</u>

5 0
3 years ago
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