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marissa [1.9K]
3 years ago
15

What will be the cost of the paving if cement costs $26.50 per square metre?

Mathematics
1 answer:
WITCHER [35]3 years ago
4 0

Answer: $2203.74

Step-by-step explanation:

You might be interested in
The triangular prism shown below is 6 \,\text{cm}6cm6, start text, c, m, end text wide and 4\,\text{cm}4cm4, start text, c, m, e
lord [1]

Answer:

The answer is "7.62 cm ".

Step-by-step explanation:

Given:

Width = 6\ cm \\\\Depth = 4 \ cm\\\\Vertical \ height = 7 \ cm\\\\

Dividing the prism's face into two halves:

As just a result, the vertical height becomes 7cm, as well as the width, becomes \frac{6\ cm}{2} = 3 \ cm. If the 's' on both sides of the edge is equal:

s^2 = width^2 + height^2\\\\

   = \sqrt{(width^2 + height^2)}\\\\  

   = \sqrt{(3^2 + 7^2)}\\\\= \sqrt{9 + 49}\\\\= \sqrt{58}\\\\= 7.62 \ cm

4 0
3 years ago
The mean age of 3 women in an office is 30 years old.
Hoochie [10]

Answer:

32 years

Step-by-step explanation:

Here, we simply calculate the age of all first

For all men, we have 7(33) = 231

For all women = 3(30) = 90

So we simply have;

(90 + 231)/10 = 32.1

Approximately 32 years

4 0
3 years ago
Complete the table for all the lengths and widths that are missing for
Sveta_85 [38]

Answer:

Step-by-step explanation:

x is 1,2,3,4,5

y is 14,13,12,11,10

5 0
3 years ago
What single percentage change is equivalent to a 23% decrease followed by a 16% increase?
Stells [14]
<h3>Answer:  10.68% decrease (choice F)</h3>

==========================================================

Explanation:

A decrease of 23% means that you still retain 77% of the original value. This is because 23% + 77% = 100%. Or you could write it like this: 100% - 23% = 77%. The 77% then converts to the multiplier 0.77

An increase of 16% will involve the multiplier 1.16 in which we can think of it like 1.16 = 1 + 0.16 = 100% + 16%

Now we'll multiply those two decimal values mentioned:

0.77*1.16 = 0.8932

This result is smaller than 1, so we have a percent decrease of some sort. Subtract it from 1 to find the decimal form of the percent decrease

1 - 0.8932 = 0.1068

Lastly, move the decimal point 2 spots to the right:

0.1068 converts to 10.68%

We have a decrease of 10.68% overall when combining the initial 23% decrease followed by the 16% increase.

It turns out the order doesn't matter, and we could do the 16% increase first then the 23% decrease next. The key as to why the order doesn't matter all relies on the fact that multiplication can be done in any order. As you can probably guess, this process can be extended for as many percentage increases and/or decreases that you want.

7 0
3 years ago
A 95% confidence interval for a population mean is computed from a sample of size 400. Another 95% confidence interval will be c
natka813 [3]

Answer:

A 95% confidence interval for a population mean is computed from a sample of size 400. Another 95% confidence interval will be computed from a sample of size 100 drawn from the same population. Choose the best answer to fill in the blank: The interval from the sample of size 400 will be approximately _______as the interval from the sample of size 100.

6 0
3 years ago
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