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2 years ago

What is the perimeter of a square that has and area equal to 64??

Mathematics

2 answers:

egoroff_w [7]2 years ago

6 0

Answer:12

Step-by-step explanation:

Leno4ka [110]2 years ago

5 0

Answer:

Step-by-step explanation:

The perimeter is the sum of the 4 sides of the square

Given area is 64 and

area = s² ← s is the length of the side, thus

s² = 64 ( take the square root of both sides )

s = $\sqrt{64}$ = 8, thus

perimeter = 8 + 8 + 8 + 8 = 4 × 8 = 32

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Solve: -25 < x + 20 < 25

denis23 [38]

Answer:

-45 < x < 5 (see graph below)

Step-by-step explanation:

to isolate x by itself, subtract 20 from all three terms of the equation:

$(-25-20)$

once you finish subtracting 20, x should be by itself, making the equation graphable:

$-45 < x < 5$

since x is not equal to -45 or 25, the graph line endings have open circles.

8 0

2 years ago

A population of voters contains 40% republicans and 60% democrats. it is reported that30% of the republicans and 70% of the demo

Blizzard [7]

To get the probability of selecting a person who is a democrat and is favour to the issue, let us first calculate for the portions in each party who is favour on the issue.

p (rep & favour) = 0.4 * 0.3 = 0.12

p (dem & favour) = 0.6 * 0.7 = 0.42

Therefore the total portions who are favour is:

p (favour) = 0.12 + 0.42 = 0.54

Hence the probability is:

P (dem & favour) = 0.42 / 0.54 = 0.7778 = 0.78

Therefore there is about 78% probability that the person selected who is favour to the issue is a democrat.

5 0

3 years ago

A store wants to earn $100,000 this year.So far they have earned $82,052.How much more money will they have to earn to meet the

eimsori [14]

Subtract 100,000 by 82,052

If you do this correctly the answer would be 17,948 dollars.

6 0

3 years ago

Read 2 more answers

In the diagram, what is the ratio of patterned circles to plain circles?

soldi70 [24.7K]

Answer:

Step-by-step explanation:

gftgffgtftyty

8 0

3 years ago

What is the measure in degrees for the central angle of a circle whose radius is 9 cm and intercepted arc length is 7.2 cm?

Marina CMI [18]

Answer:

Therefore the measure of the central angle is 45.86°.

Step-by-step explanation:

Given:

Radius = 9 cm

arc length = 7.2 cm

pi = 3.14

To Find:

Central angle = θ =?

Solution:

If the θ measured in degree then the arc length is given as

$\textrm{arc lenght}=\dfrac{\theta}{360\°}\times 2\pi r$

Where r = radius, θ = Central angle

On substituting the values we get

$7.2=\dfrac{\theta}{360}\times 2\times 3.14\times 9\\\\\theta=\dfrac{2592}{56.52}=45.8598=45.86\\\therefore \theta=45.86\°$

Therefore the measure of the central angle is 45.86°.

4 0

3 years ago