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Naily [24]
3 years ago
11

Following a severe​ snowstorm, Ken and Bettina Reeves must clear their driveway and sidewalk. Ken can clear the snow by himself

in 2 ​hours, and Bettina can clear the snow by herself in 5 hours. After Bettina has been working for 1-hour, Ken is able to join her. How much longer will it take them working together to remove the rest of the​ snow?
Mathematics
1 answer:
Mademuasel [1]3 years ago
6 0

Answer:

It will take 5.6 hours

Step-by-step explanation:

If Ken (K) can clear in two hours and bettina (B) in five hours then;

5K=2B; If B=1 K=2/5 = 0.4 (2-0.4=1.6) plus 4 from B are 5.6 or also: If B=4 (Bettina started 1 hour later 5-1=4) K=8/5=1.6 then K+B=1.6+4=5.6 h

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A washer and a dryer cost 792 combined. The washer costs 92 more than the dryer. What is the cost of the dryer?
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Answer:

divide 792 by 2

792÷2=304

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Hardy was given the scale drawing of the enlargement to Analyze Hardy's work to determine if he is correct. If he
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Step-by-step explanation:

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3 years ago
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What is the square root of 149? And please show me how to find the answer
chubhunter [2.5K]
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4 0
3 years ago
After 5 years, a $2,450 investment is worth $3,123.75.
kondaur [170]

Answer:

5.5%

Step-by-step explanation:

To solve this problem we can use a modified version of the simple interest formula which is shown below:

r=\frac{I}{Pt}

<em>I = interest amount</em>

<em>P = principal amount</em>

<em>t = time (years)</em>

<em />

The first step is to find the interest gained from the investment.

3,123.75-2,450=673.75

Next, plug in the values into the equation:

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The last step is to convert 0.055 into a percent:

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3 0
3 years ago
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