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3 years ago

I need help on this ASAP

Mathematics

2 answers:

horsena [70]3 years ago

8 0

Answer:

i cant see the photo clear enough but hopefully this helps...

Step-by-step explanation:

area = pi times radius squared

pi is equal to 3.14159

pochemuha3 years ago

4 0

Since r=1, area of circle is pi*r^2, which is just pi (1). Your answer is PI.

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Approximate <img src="https://tex.z-dn.net/?f=-8%20%2B%5Csqrt%7B20%7D" id="TexFormula1" title="-8 +\sqrt{20}" alt="-8 +\sqrt{20}

alisha [4.7K]

The value of the radical expression -8 + √20 when expanded and solved is -3.6, based on the given parameters

<h3>What are equivalent expressions?</h3>

Equivalent expressions are different expressions that have equal values when evaluated and compared

<h3>How to approximate the radical expression?</h3>

The expression is given as:

-8 + √20

The above expression is a radical expression

So, we start by doing the following

Express 20 as 5 * 4

-8 + √20 = -8 + √(5 * 4)

Split the radical expression √(5 * 4)

-8 + √20 = -8 + √5 * √4

Evaluate the square root of 4 i.e. √4 = 2

-8 + √20 = -8 + √5 * 2

This gives

-8 + √20 = -8 + 2√5

Evaluate the square root of 5

-8 + √20 = -8 + 2 * 2.2

Evaluate the product of 2 and 2.2

-8 + √20 = -8 + 4.4

Evaluate the difference

-8 + √20 = -3.6

Based on the given parameters, the value of the radical expression -8 + √20 when expanded and solved is -3.6

So, the complete equation is:

-8 + √20 = -3.6

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brainly.com/question/2972832

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2 years ago

What is the m∠ACD, if m∠ABC = 37?

Stella [2.4K]

Step-by-step explanation:

angle ABC= angle ACB= 37° --------- because AB=AC

angle ACB+ angle ACD=180°

37+angle ACD=180

angle ACD=143°

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3 years ago

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Joe drove 345 miles on 25 gallons of gas What was his average miles per gallon?

hichkok12 [17]

Answer:

13.8 miles a gallon

Step-by-step explanation:

I think this because 345 divided by 25 equals 13.8 which would mean 13.8 miles for every gallon

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3 years ago

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A rectangular pyramid has a volume of 90 cubic feet. What is the volume of a rectangular prism with the same size base and same

yanalaym [24]

Answer:

30 cubic feet

Step-by-step explanation:

Here we are given the volume of rectangular pyramid as 90 cubic feet as we are required to find the volume of rectangular prism.

For that we need to use the theorem which says that

the volume prism is always one third of the volume of the pyramid . Whether it is rectangular of triangular base. Hence in this case also the volume of the rectangular prism will be one third of the volume of the rectangular pyramid.

Volume of Rectangular prism = $\frac{1}{3}$ * Volume of rectangular pyramid

= $\frac{1}{3}$ * 90

= 30

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3 years ago

Round 98,471 to the nearest ten thousands

d1i1m1o1n [39]

The answer to this question is 98000

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4 years ago