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Novay_Z [31]
3 years ago
13

Sarah’s age increased by twice bob’s age is 42

Mathematics
2 answers:
mr Goodwill [35]3 years ago
6 0
Since Sarah’s age is 2x of Bob’s age (which is 42) Sarah is 84.
Pavel [41]3 years ago
6 0

Hello there! The answer to your question is 'Sarah is 21 years old.'


Need an Explanation?:

So twice Sarah's age is equal to bob's age, which is 42. To solve, set up an equation that looks like this: (s = Sarah's age)

2s = 42

Solve for S. To do this, divide both sides of the equation by 2.

You get s = 21.

This means Sarah is 21 years old.

<em>I hope this helps, and have a great day! Please don't hesitate to ask if you need more help with this specific question! </em>




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How do you solve .05+1.20(0.11-.05)
Snowcat [4.5K]

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.122

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6 0
3 years ago
Spencer sampled 50 students of a private school who were questioned about their scores in Mathematics. Spencer wants to test the
pickupchik [31]

Answer:

C) 3.03

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given sample size 'n' = 50

The Mean of the population (μ) = 62

The standard deviation of the Population (σ) = 7

Mean of the sample(x⁻) = 65

Z-score

                 Z= \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }

<u><em> Step(ii):-</em></u>

<em>                </em>Z= \frac{65 -62}{\frac{7}{\sqrt{50} } }<em></em>

<em>               Z =  3.03</em>

<u><em>Final answer:-</em></u>

<u><em>The Z-score = 3.03</em></u>

6 0
3 years ago
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