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3 years ago

What is the area and perimeter. Please help I’ll give brainliest if I get it correct

Mathematics

2 answers:

nika2105 [10]3 years ago

8 0

Hello!

You first have to find the width

We can find this use the Pythagorean theorem

12^2 + b^2 = 15^2

Square the numbers

144 + b^2 = 225

Subtract 144 from both sides

b^2 = 81

Take the square root of both sides

b = 9

The width is 9

To find the perimeter you do 2l + 2w

Put in the values 2(12) + 2(9)

24 + 18 = 42

The perimeter is 42cm

To find the area you multiply the sides

12 * 9 = 108

The area is 108cm^2

The answer is D

Hope this helps!

Fudgin [204]3 years ago

3 0

See the attached picture:

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Answer:

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Step-by-step explanation:

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2 years ago

If a shopkeeper sells an article for $440 and loses 12% on the sale, find his cost price.

worty [1.4K]

Step-by-step explanation:

440÷100×12

52.8

440-52.8

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3 years ago

How am I supposed to solve this ?? And what’s the answer ?

Ivenika [448]

I don't have a clue what this a0 at the right stands for, but if we neglected it, we can solve the problem.
$(5x)^2=5^2x^2=25x^2$
So the answer would be 25.

Hope this helps.

3 0

3 years ago

What is 8.25 as a fraction in simplest form?

vekshin1

8 is a whole number, so this will be the whole number part of our mixed number.

0.25 is a decimal, where 25 is in the HUNDREDths place, so we write 25 as a fraction over 100.

$\sf\dfrac{25}{100}$

Simplify by dividing 25 to the numerator and denominator.

$\sf25\div25=1$
$\sf100\div25=4$

So our fraction is $\sf8\dfrac{1}{4}$

0.55 is a decimal, where 55 is in the HUNDREDths place, so we write 55 as a fraction over 100.

$\sf\dfrac{55}{100}$

Simplify by dividing 5 to the numerator and denominator.

$\sf55\div5=11$
$\sf100\div5=20$

So our fraction is $\sf\dfrac{11}{20}$

$\sf\dfrac{5}{8}$

To convert this to a decimal, just divide 5 / 8

$\sf5\div8=0.625$

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2 years ago

Read 2 more answers

Both Andrew and Karleigh recorded the distance they ran in x minutes on treadmills. Andrew A 2-column table with 2 rows. Column

mars1129 [50]

Answer:

ex:Speed (S) is the ratio of the distance (D) covered to the time (t) taken.

That is, S = D/t

Suppose Andrew ran a distance D1 in 1 hour (3600 seconds) at a Speed, say S1, we have

S1 = D1/t

We can then say he ran a distance

D1 = t × S1

= 3600S1

Similarly, let's say Karleigh ran a distance

D2 = t × S2

= 3600S2

Let us compare these two, you will notice that the bigger number between S1 and S2 is going to determine the bigger number between D1 and D2.

Let's choose random numbers for S1 and S2 for clarity, say S1 = 5, S2 = 10

D1 = 3600 × 5

= 18000

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= 36000

This makes D2 bigger than D1. this is an example i found on the internet.

Step-by-

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3 years ago

Read 2 more answers