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vfiekz [6]
3 years ago
9

Please answer both questions

Mathematics
1 answer:
romanna [79]3 years ago
7 0

Answer:

D. 45

Step-by-step explanation:

1. The solution to the question above is answered in the attached picture.

2. Liz is wrong for choosing option C as answer. Liz actually performed this operation to get 30: 1.5 × 5 × 4 = 30.

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Sign numbers, ratios &amp; Proportion <br><br> (+10) + (+6) = ?
Viefleur [7K]

Answer:

16

Step-by-step explanation:

Putting a + in front of a number indicates that the number is positive. so we are just going to add it up.

10+6=16

10:6=5:3

Hope it helps:)

7 0
3 years ago
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dmitriy555 [2]

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cuz i have the same homework

3 0
2 years ago
What is 4 √(2 × √(2 simplified?
larisa86 [58]

i think that it is 8

5 0
3 years ago
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natka813 [3]

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6 0
3 years ago
Use the Counting Principle to find the probability. Choosing the 7 winning lottery numbers when the numbers are chosen at random
frozen [14]

Answer:   120

<u>Step-by-step explanation:</u>

Since the order of the numbers doesn't matter we can use the formula:

\dfrac{n!}{r!(n-r)!}\quad \text{where n is the quantity of items and r is the quantity chosen}\\\\\text{In this problem, there are 10 numbers (n = 10) and 7 to be chosen (r = 7)}\\\\_{10}C_{7}=\dfrac{10!}{7!(10-7)!}\\\\.\qquad=\dfrac{10!}{7!3!}\\\\.\qquad=\dfrac{10\times 9\times 8\times 7!}{7!\times 3\times 2\times 1}\\\\.\qquad=10\times 3\times 4\\\\.\qquad=120

7 0
3 years ago
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