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Luda [366]
3 years ago
14

4 bags of cement do 18 m² how many m^2 can be done with seven bags

Mathematics
1 answer:
lisov135 [29]3 years ago
7 0

Answer:

31.5 m^2

Step-by-step explanation:

To find the amount for 7 bags, create a proportion.

\frac{4}{18} =\frac{7}{y}

To solve for y, cross multiply numerator to denominator of each fraction.

4(y) = 18(7)

4y= 126

y= 31.5

7 bags will do 31.5 m^2

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ioda

Answer:

2

Step-by-step explanation:

You would use PEMDAS( parentheses exponents multiply adding subtracting) (1/2)4.

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5 0
2 years ago
In the following figure, the square ABCD is inscribed in the circle centered at point P. What is the area of the circle?
Ainat [17]

Answer:

A_{Circle} \approx 39.24\: units^2

Step-by-step explanation:

Square ABCD is inscribed in a circle with center P such that BC = 5 units.

BD will be diagonal of the square as well as diameter of the circle.

BD = BC\times\sqrt 2

\implies BD = 5\sqrt 2

-> Diameter of the circle (d) = 5\sqrt 2

-> Radius of the circle (r) = 2.5\sqrt 2=3.535\: units

A_{Circle} =\pi(r)^2

\implies A_{Circle} =3.14(3.535)^2

\implies A_{Circle} =3.14(3.535)^2

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8 0
2 years ago
Jordon missed 49 on his multiple choice math final and earned a grade of 65%. How many total questions were on the final exam?
harkovskaia [24]

Answer:

The exam was out of 75.

Step-by-step explanation:

You know that he earned 65% so more than half his answers were correct.

Then, you would guess and check try 49/60, 49/70, and go up by 10s or 5s. You will then realize that 49÷75 equals 65.333. This rounds up to 65.

8 0
2 years ago
The distance from the library to the park is 0.7 km how many meters is this
givi [52]
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3 0
3 years ago
Read 2 more answers
draw a rectangle give the length and the width to show that it has an area of 12cm make sure one side is longer than the other t
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To find area, you multiply length * width. There are 4 sides on a number, so we need to have a equation like this. x * x * y * y = 12cm. If we do 4 * 4, we get 8. We could also use 2 * 2 = 4. 8 + 4 = 12. So, width = 8, and length = 4.

Hope this helps! ☺♥
3 0
3 years ago
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