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Olin [163]
3 years ago
15

How can you use your answer to problem to find the product of 7 × 6?​

Mathematics
2 answers:
WITCHER [35]3 years ago
5 0

Answer:

42

Step-by-step explanation:

Gemiola [76]3 years ago
5 0
The answer is 42!!!!!
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His purchase weighed a total of 8.2 pounds.
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What is the value of x? please help me! <br><br> A. 43<br> B. 62<br> C. 105<br> D. 115
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Answer:

C

Step-by-step explanation:

x is the exterior angle of angle EFG while EFG = 180 - 62 - 43 = 75

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2 years ago
200 points if you help me? 24 hours is equal to one ____ of the Earth
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Step-by-step explanation:

because the earth rotates

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2 years ago
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\bf \begin{array}{ccllll}&#10;amount&\%\\&#10;\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\&#10;75&100\\&#10;x&9\frac{2}{5}&#10;\end{array}\implies \cfrac{75}{x}=\cfrac{100}{9\frac{2}{5}}\implies \cfrac{75}{x}=\cfrac{100}{\frac{9\cdot 5+2}{5}}

\bf \cfrac{75}{x}=\cfrac{\frac{100}{1}}{\frac{47}{5}}\implies \cfrac{75}{x}=\cfrac{100}{1}\cdot \cfrac{5}{47}\implies \cfrac{75}{x}=\cfrac{500}{47}\implies 75\cdot 47=500\cdot x&#10;\\\\\\&#10;\cfrac{3525}{500}=x\implies \cfrac{141}{20}=x\implies 7.05=x
7 0
3 years ago
Sarah is doing research on the average age of first-year resident physicians. She wants her estimate to be accurate to within 1
WINSTONCH [101]

Answer: The number of first-year residents she must survey to be 95% confident= 263

Step-by-step explanation:

When population standard deviation (\sigma)  is known and margin of error(E) is given, then the minimum sample size (n) is given by :-

n=(\dfrac{z^*\sigma}{E})^2, z* = Two-tailed critical value for the given confidence interval.

For 95% confidence level , z* = 1.96

As, \sigma = 8.265, E = 1

So, n= (\dfrac{1.96\times8.265}{1})^2 =(16.1994)^2\\\\= 262.42056036\approx263\ \ \ [\text{Rounded to the next integer}]

Hence, the number of first-year residents she must survey to be 95% confident= 263

7 0
3 years ago
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