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3 years ago

What is the area of a circle whose radius is 6ft?

Mathematics

1 answer:

uranmaximum [27]3 years ago

7 0

Answer:

hello :

Step-by-step explanation:

the area of a circle is : A = π r² r : the radius

A = π (6)² = 36π (ft)² ........( answer : C)

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What is (f *g)(x)? f(x) = x^4 - 9 g(x)= x^3 +9 (f *g)(x) = ??

dybincka [34]

Use F.O.I.L

X^7+9x^4-9x^3-81

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3 years ago

Which are factors of x² - 4x - 5? Select two options.

Annette [7]

Answer:

(x-5) & (x+1)

Step-by-step explanation:

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2 years ago

Read 2 more answers

Ten experts rated a newly developed chocolate chip cookie on a scale of 1 to 50. Their ratings were: 34, 35, 41, 28, 26, 29, 32,

miskamm [114]

The mean deviation of the ratings is 4.12

Explanation

The ratings of the ten experts are: 34, 35, 41, 28, 26, 29, 32, 36, 38 and 40

So, the mean of all ratings $=\frac{34+35+41+28+26+29+32+36+38+40}{10}= \frac{339}{10}=33.9$

The formula for Mean deviation $= \sum \frac{|x_{i}- \mu|}{N}$ , where $x_{i}$ is the given data from $i=1$ to $i=10$ , $\mu$ is the mean of the data and $N$ is the total number of data. So.....

$|x_{1}-\mu |= |34-33.9|=0.1\\ |x_{2}-\mu|=|35-33.9|=1.1\\ |x_{3}-\mu |=|41-33.9|=7.1\\ |x_{4}-\mu |=|28-33.9|=5.9\\ |x_{5}-\mu |=|26-33.9|=7.9\\ |x_{6}-\mu |=|29-33.9|=4.9\\|x_{7}-\mu |=|32-33.9|=1.9\\ |x_{8}-\mu |=|36-33.9|=2.1\\ |x_{9}-\mu |=|38-33.9|=4.1\\ |x_{10}-\mu |=|40-33.9|=6.1$

So, the Mean deviation $=\sum \frac{|x_{i}-\mu |}{N}=\frac{0.1+1.1+7.1+5.9+7.9+4.9+1.9+2.1+4.1+6.1}{10} = \frac{41.2}{10}=4.12$

4 0

3 years ago

How do i solve this?

tigry1 [53]

Answer:

x = 5

Step-by-step explanation:

The corresponding segments are proportional, so you can write any of several equations relating the different segment lengths. Here's one way:

top segment/bottom segment = x/(x+5) = (x-2)/(x+1)

Multiply by the product of denominators:

(x +1)x = (x +5)(x -2)

x² +x = x² +3x -10 . . . . . eliminate parentheses

10 = 2x . . . . . . . . . . . . . . add 10 -x -x² to both sides of the equation

5 = x . . . . . divide by 2

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3 years ago

A blueprint is drawn using a scale of 2 mm over 25 ft. What length is represented by 1 mm?

NARA [144]

12.5 ft is the length of 1 mm

4 0

3 years ago