Can someone help me with this question please

Mathematics

1 answer:

Veronika [31]3 years ago

4 0

The answer is 34 ft u have to apply pythogoras thereom

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Im stuck on these 2 questions

Kryger [21]

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In the first question it is the 2nd table. On the second it is : No, the xost of the 9 shirts is incorrect

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3 years ago

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781÷26 26×3=78 is answer 3 remainder 1 or 30 remainder 1

mamaluj [8]

Which one is the one you want, 781:-:(divison)26?

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3 years ago

If f(x) = 5x - 11, find f(-2m + 5)

sukhopar [10]

$f(-2m + 5)=5(-2m+5)-11=-10m+25-11=-10m+14$

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3 years ago

One person can do a certain job in 15 minutes and another person can do the same job in 30 minutes. How many minutes will it tak

Flauer [41]

Hello! Your answer is B, 10 minutes.

Say the x = minutes taken to do the job. You can set up an equation like this to solve this.

$\frac{1}{15} x + \frac{1}{30} x = 1$

This is representative of the situation. The fractions each represent how much each person does in a minute, and when they're multiplied by x, that's how much of the project they get done based off of the minutes they work together on the job. Add the two together, and you get how much of the project is finished in x amount of time. Set it equal to 1, as you are looking for 100% completion.

Once you have this equation, find a common denominator, add, and solve.

$\frac{1}{15} x + \frac{1}{30} x = 1$

$\frac{2}{30} x + \frac{1}{30} x = 1$