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3 years ago

HELPPPP PLEASE!!!!!!

Mathematics

1 answer:

Sergeu [11.5K]3 years ago

8 0

Answer:

x = 7

Step-by-step explanation:

7x - 12 = 9x - 26

+12 +12

7x = 9x - 14

-9x -9x

-2x = -14

___. ___

-2 -2

x = 7

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Circle A has radius 4 feet. Circle B has radius 9 feet. What is the ratio of the area of circle A to the area of circle B?

yaroslaw [1]

Answer:

$\large\boxed{\dfrac{16}{81}}$

Step-by-step explanation:

The formula of an area of a circle:

$A=\pi r^2$

r - radius

Circle A:

radius = 4 ft. Substitute:

$A_A=\pi(4^2)=16\pi\ ft^2$

Circle B:

radius = 9 ft. Substitute:

$A_B=\pi(9^2)=81\pi\ ft^2$

The ratio:

$\dfrac{A_A}{A_B}=\dfrac{16}{81}$

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3 years ago

A small cube has the volume shown. Its side length is 1.5 in less than a second larger cube. What is

eduard

The volume of the larger cube is 227 inches cube.

<h3 /><h3 /><h3>Volume of a cube is describe below:</h3>

v = L³

where

L = length

The small cube has the following volume:

v = 95 in³

Let

The side length of the small cube = x

Therefore,

95 = x³

x = ∛95

x = 4.56290264

x ≈ 4.6

Its side length is 1.5 inches less than a second larger cube. Therefore,

length of larger length cube = (x + 1.5 )inches = 4.6 + 1.5 = 6.1 inches

Therefore, the volume of the larger cube can be found as follows:

Volume = 6.1³

volume = 226.981

volume ≈ 227 inches³

learn more on cubes here:brainly.com/question/2671825?referrer=searchResults

6 0

3 years ago

A total of 60% of the customers of a fast food chain order a hamburger, French fries, and a drink. If a random sample of 15 cash

Ne4ueva [31]

Answer:

C. 0.403

Step-by-step explanation:

Binomial distribution has two parameter n and p. Here, n=15 and p=0.60.

We have to find the probability of 10 or more will show that the hamburger, French fries and a drink were ordered. P(X≥10)=?

The binomial probability distribution function for random variable X is

$P(X=x)=nCxp^{x} q^{n-x}$

where q=1-p=1-0.6=0.4,n=15 and p=0.6.

P(X≥10)=P(X=10)+P(X=11)+P(X=12)+P(X=13)+P(X=14)+P(X=15)

$P(X=10)=15C10(0.6^{10})( 0.4^{5})$ =0.185938

$P(X=11)=15C11(0.6^{11}) (0.4^{4})$ =0.126776

$P(X=12)=15C12(0.6^{12}) (0.4^{3})$ =0.063388

$P(X=13)=15C13(0.6^{13}) (0.4^{2})$ =0.021942

$P(X=14)=15C14(0.6^{14}) (0.4^{1})$ =0.004702

$P(X=15)=15C15(0.6^{15}) (0.4^{0})$ =0.000470

P(X≥10)= 0.185938 +0.126776 +0.063388 +0.021942 +0.004702 +0.000470

P(X≥10)=0.403216

So, the probability of 10 or more will show that the hamburger, French fries and a drink were ordered is 0.403.

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3 years ago

What is the slope intercept form in equation form or this graph?

Snowcat [4.5K]

Y=2x+0
the y intercept is 0 and the slope is 2/1

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3 years ago

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3. In a right triangle, the altitude from the right angle to the hypotenuse divides the

stiks02 [169]

Answer:

Step-by-step explanation:

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3 years ago