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3 years ago

jenny has 50 square tiles she arranges the tiles in to a rectangular array of 4 rows. how many tiles are left over

Mathematics

1 answer:

tresset_1 [31]3 years ago

5 0

She would be able to make 12 piles 12x4=48 50-48=2 2 tiles left over

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konstantin123 [22]

All you have to do for each question is do (population times growth, the answer of that times 25 plus the original population and that’s 2025 population.

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3 years ago

For the figures below, assume they are made of semicircles, quarter circles and squares. For each shape, find the area and perim

ICE Princess25 [194]

Answer:

Part a) The area of the figure is $\frac{9}{2}(4+\pi )\ cm^{2}$

Part b) The perimeter of the figure is $3(2+2\sqrt{2}+ \pi)\ cm$

Step-by-step explanation:

Step 1

Find the area of the figure

In this problem we have that

The figure ABC is the half of a square and the other figure is a semicircle

<u>Find the area of the figure ABC</u>

we have

$AB=6\ cm, BC=6\ cm$

The area of the half square ABC is equal to find the area of triangle ABC

$A1=\frac{1}{2}*6*6=18\ cm^{2}$

<u>Find the area of the semicircle</u>

The area of the semicircle is equal to

$A2=\pi r^{2}/2$

we have that

$r=6/2=3\ cm$

substitute

$A2=\pi (3)^{2}/2$

$A2=(9/2) \pi\ cm^{2}$

The area of the figure is equal to

$18\ cm^{2}+(9/2) \pi\ cm^{2}= \frac{9}{2}(4+\pi )\ cm^{2}$

Step 2

Find the perimeter of the figure

The perimeter of the figure is equal to

$P=AB+AC+length\ CB$

we have

$AB=6\ cm$

Applying Pythagoras theorem

$AC=\sqrt{6^{2}+6^{2}}\\AC=6\sqrt{2}\ cm$

Remember that

the circumference of a semicircle is equal to

$C=\frac{1}{2}2\pi r=\pi r$

$r=6/2=3\ cm$

$C=\pi(3)$

$C=3 \pi\ cm$

The perimeter of the figure is equal to

$P=6\ cm+6\sqrt{2}\ cm+3 \pi\ cm$

Simplify

$P=3(2+2\sqrt{2}+ \pi)\ cm$

5 0

3 years ago

Q^2-4q-21=0 solve the equation

kobusy [5.1K]

q= 7 or q= -3

Hope i helped :)

8 0

3 years ago

I need the answer. (will give brainliest)

MatroZZZ [7]

Answer:

Step-by-step explanation:

We can use ratios to solve

15 ft 18ft

---------- = -----------

5ft x

Using cross products

15x = 5*18

15x = 90

Divide by 15

15x/15 = 90/15

x =6

3 0

3 years ago

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One-third of a number is 84. What is the number? *

kiruha [24]

252 just do 84x3 and ya

7 0

2 years ago

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