QUESTION 2 of 10: You have a budget of $3,000 to spend on a survey. If the base cost of the survey is $850 plus $4.50 per person
2 answers:
Answer:
Option A.
Step-by-step explanation:
Base cost of the survey is defined by the expression
Base cost C = 850 + 4.5x
where x = number of persons surveyed
If the budget to spend on a survey is = $3000
Then Number of person we can survey can be determined by
3000 = 850 + 4.5x
4.5x = 3000 - 850
4.5x = 2150
x =
x = 477.78
But the number of persons surveyed can not be in fraction.
Therefore, sample size we can afford is 477.
Option A. is the answer.
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Now the first mechanic takes 4 days to do the job, so after he has worked for 1 day only, he has done 1/4 of the whole thing.
the second mechanic can do it in 6 days, so after 1 day only of work, he has done 1/6 of the whole thing.
the third mechanic can do it in 8 days, so after a day, he has done 1/8 of the total work.
now, if they all three work together, after 1 hour has gone by, the first mechanic has done 1/4 of the whole thing, the second mechanic has done 1/6 of it, and the last one, has done 1/8.
let's say it took all three working together "t" days, that means after 1 hour of work, they all combined have done 1/t of the whole thing, thus
the second mechanic can do it in 6 days, so after 1 day only of work, he has done 1/6 of the whole thing.
the third mechanic can do it in 8 days, so after a day, he has done 1/8 of the total work.
now, if they all three work together, after 1 hour has gone by, the first mechanic has done 1/4 of the whole thing, the second mechanic has done 1/6 of it, and the last one, has done 1/8.
let's say it took all three working together "t" days, that means after 1 hour of work, they all combined have done 1/t of the whole thing, thus
The product if a-3 and -2a^2+15a+6b^2 is:
Step-by-step explanation:
In order to find the product of 2 expressions, distributive property can be used.
Given expressions are:
Product of given expressions
Combining like terms
Hence,
The product if a-3 and -2a^2+15a+6b^2 is:
Keywords: Expressions, product
Learn more about expressions at:
#LearnwithBrainly
<u>Answer:</u>
- The value of x is 50°.
<u>Step-by-step explanation:</u>
<u>We know that:</u>
- x = y
- 2(70 + 60) + x + y = 360
<u>Work:</u>
- 2(130) + x + x = 360
- => 260 + 2x = 360
- => 2x = 360 - 260
- => 2x = 100
- => x = 50
Hence, <u>the value of x is 50°.</u>
Hoped this helped.