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3 years ago

Which of the following is not a rate?

Mathematics

1 answer:

IrinaK [193]3 years ago

5 0

Answer:

Folding 6 loads

Step-by-step explanation:

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The total of two numbers is 28. Four times the smaller number is 7 more than three times the larger number.

navik [9.2K]

Let's define:
$x \ \textless \ y$

So, you can set up a system of equations:
$x + y = 28$
$4x = 7 + 3y$

Now, to solve for both of those values, solve the system of equations:
$x = 28 - y$
$4(28-y) = 7+3y$
$122-4y=7+3y$
$115 -4y = 3y$
$115 = 7y$
$y = 16.43$

Now, plug that y-value into the first equation to solve for x:
$x + 16.43=28$
$x = 11.57$

Now, we have both the values. The smaller value (x) = 11.57 and the bigger value (y) = 16.43.

3 0

3 years ago

Can you help me please

schepotkina [342]

The answer to the problem is A) 20 feet below sea level

6 0

4 years ago

Please help someone please

aliya0001 [1]

Answer:

6(x +8)

Step-by-step explanation:

Factorising:

6x + 48

Take 6 as common, Therefore:

6(x +8)

Because:

6 * x = 6x

6 * 8 = 48

therefore:

6x + 48 = 6(x + 8)

Hope it helped!!!

3 0

3 years ago

Please help me, urgent!

Inga [223]

6.r_xaxis=(x,-y)
7.first option

7 0

3 years ago

A building company used 24 workers to prepare a building site. The site measured 30 acres and the work was completed in 10 days.

maks197457 [2]

Answer:

30 workers are required.

Step-by-step explanation:

If the site measured 30 acres and was completed in 10 days, then it can be said that on average $\frac{30}{10} = 3\frac{acres}{day}$ were made.

Then, 24 workers completed 3 acres / day.

Then, $\frac{24.workers}{\frac{3acres}{day}} = \frac{8..Workers * days}{acre}$

8 workers can complete 1 acre per day

Now to know how many workers are needed to complete 45 acres in 12 days, we multiply:

$8\frac{Workers * days}{acre}*\frac{45}{12} \frac{acres}{days} = 30.workers$ .

Finally, 30 workers are required.

To solve this problem it was assumed that everyone worked at the same pace, which may not be true, the fact that some work at a slower or faster pace than another could alter the result, causing them to finish less or more acres by day.

6 0

3 years ago