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Romashka [77]
3 years ago
13

What’s is the radius of a circle with a area of 3.21 square feet

Mathematics
1 answer:
Rus_ich [418]3 years ago
7 0

approx 1 foot

The area (A) of a circle = πr² ( where r is the radius)

thus r² = A/π ⇒ r = √(A/π = √(3.21/π) =1.0108..... ≈ 1 foot ( to 1 dec. place)

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a washer and dryer costs $951 combined. The washer costs $51 more than the dryer. what is the cost of the dryer?​
Over [174]

Answer:

$450

Step-by-step explanation:

We know that the washer costs $51 more dollars than the dryer.

The washer costs x+51

The dryer costs x

So to simplify this we can do this equation:

2x+51=951

Substitute and simply the equation, and you should get this:

2x=900

x=450

Hope this helps! :)

8 0
3 years ago
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Help? -Factoring polynomials
OLEGan [10]

Answer:

False

Step-by-step explanation:

If we have a factor then the remainder after the division will be zero.

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Sergio [31]
Hey there!

Here is your answer:

<u><em>The proper answer to this question is "44 times".</em></u>

Reason:

You have to solve it this way:

<u><em>12 heartbeats=16 seconds</em></u>

<u><em>16+16=32</em></u>
<u><em>36+16=48</em></u>
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<u><em>12+12=36+8=44</em></u>

<em>Therefore lions heart beats 44 times every 60 seconds.</em>

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit
6 0
3 years ago
What is the correct definition for cot theta?
NemiM [27]

The correct definition for cot theta is (cos theta)/(sin theta). <span>Cotangent </span><span>(in a right-angled triangle) the ratio of the side (other than the hypotenuse) adjacent to a particular acute angle to the side opposite the angle. </span>I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

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3 years ago
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Luisa's current swimming record is 12% faster than it was last year. If her record last year was 4 minutes and 23 seconds, what
Elden [556K]
12% less since faster
100%-12%=88%

88% of 4 min and 23 sec=
0.88 times 263 seconds=
=231.44=3 minutes and 50 seconds rounded

3 mins, 50 seconds
7 0
3 years ago
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