Answer:
<em>It takes them 1.875 hours.</em>
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<em>Step-by-step explanation:</em>
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<em>Here, the job is cleaning the house.</em>
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<em>Mom does 1 job in 3 hours.</em>
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<em>In 1 hour, mom does 1/3 of the job.</em>
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<em>Dad does 1 job in 5 hours.</em>
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<em>In 1 hour, dad does 1/5 of the job.</em>
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<em>Mom and dad working together do the job in x hours.</em>
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<em>In 1 hour, mom and dad together do 1/x of the job.</em>
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<em>1/3 + 1/5 = 1/x</em>
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<em>5/15 + 3/15 = 1/x</em>
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<em>8/15 = 1/x</em>
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<em>8x = 15</em>
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<em>x = 15/8 = 1.875</em>
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<em>Answer: It takes them 1.875 hours.</em>
your welcome
Answer:
h(-1) is -1, h(-0.5) is 0 and h(1) is 1.
Step-by-step explanation:
functions :- an expression, rule or law that defines relationship between one variable and another variable. When a certain condition is fulfilled, then the result is corresponding to that condition.
In the function it is given that when x∈(-2,-1] then we get -1. Now here x=-1 satisfies the given condition. So, the answer will be -1.
In the function it is given that when x∈(-1,0] then we get 0. Now here x=-0.5 lies in the range (-1,0]. So, the answer is 0.
In the function it is given that when x∈(0,1] then we get 1. Clearly, x=1 satisfies this range of values. So, we get 1.
Hence, the Answer is h(-1) = -1, h(-0.5) = 0 and h(1) = 1.
know more about functions at brainly.com/question/15912209
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