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Brrunno [24]
3 years ago
9

Find the area and the circumference of a circle with diameter 3 ft.

Mathematics
1 answer:
Zigmanuir [339]3 years ago
3 0

Step-by-step explanation:

circumference of a circle

2×pi×r

area of a circle

pi×r²

r (radius) = diameter/2 = 1.5ft

we shall assume pi to be 3.14

circumference is

2×3.14×1.5 = 3.14×3 = 9.42 ft

area is

3.14 × 1.5² = 3.14×2.25 = 7.065 ft²

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Solve 900•6 in steps
77julia77 [94]

Answer:5400

Step-by-step explanation:9•6= 54

Add both zeros from 900 at the end and it’s 5400

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Find the slope of the line passing through the points -4,-3 and 8,-9
Dafna11 [192]

Answer:

-3/4

Step-by-step explanation:

Slope = Rise/Run

Between -4 and 8, the line runs 12 units. Between -3 and -9, the line rises -9 units.

-9/12 = -3/4

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The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard de
In-s [12.5K]

3.03 days

Step-by-step explanation:

We first look up the Z-score for 90th percentile in the table;

= 1.282

Z score is given by the formula;

X – μ / σ

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1.282 = X -  5.2 / 2.2

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= 3.03

6 0
3 years ago
3 questions, will give 50 points + brainliest if answered all!
Iteru [2.4K]

Answer:

Part A: C

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Prime factorization of a 4- digit number with at least three distinct factors
denpristay [2]

Answer:

We know that every number can be written as a product of prime numbers.

The method to find the factorized form of a number depends on the number, we just try to find the different factors by dividing by them, for example for the number 1000 we have:

1000 is an even number, then we can divide it by 2 (2 is a prime number)

1000 = 2*500   (so we already found a prime factor)

500 is also an even number, so we can divide it by 2

1000 = 2*500 = 2*2*250  (we found another prime factor)

dividing by 2 again we get:

1000 = 2*2*250 = 2*2*2*125

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now we just need to factorize 125

we know that 125 is a multiple of 5, such that:

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(5 is a prime number, so it is completely factorized).

Then the factorization of 1000 is:

1000 = (2*2*2)*(5*5*5) = 2^3*5^3

Now with another example, 1422

1422 is an even number, so we again start using the factor 2:

1422 = 2 = 711

then:

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and 79 is a prime number, so we already have 1422 completely factorized.

8 0
2 years ago
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