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3 years ago

What is the scale factor?

Mathematics

1 answer:

Natalka [10]3 years ago

5 0

Answer:

Step-by-step explanation:

You divide 6 by 3 and get 2. You can find x by multiplying 5.5 x 2.

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Help me someone!!!!!!!!!!!!!!!!!!!!!!!

Julli [10]

Substitute answers in, a = 3 and b = 2.

(3^2 - 2^2)/(3+2)
= (9-4)/5
= 5/5
= 1

7 0

3 years ago

What is the measure of the angle? А 30° В. 60° с. 90° D. 120 E. 150

Vsevolod [243]

I think the answer is B

4 0

3 years ago

Distributive property (-2)(a 6)

aivan3 [116]

Hello there.

Distributive property (-2)(a 6)

-2a^6

5 0

3 years ago

Show that the following functions are probability density functions for some value of k and determine k. Then, determine the mea

lord [1]

Answer:

a) 17.5

b) 15.6

c) 13.3

d) 21.51

Step-by-step explanation:

The given function is equal to:

f(x)=kx^2

where

$\int\limits^y_0 {kx^{2} } \, =1$

where y=23

Clearing k=0.00025

a) $Ex=\int\limits^y_0 {xf(x)} \, dx =\int\limits^y_0 {x*0.00025x^{2} } \, dx =17.5$

b) $Vx=Ex^{2} -(Ex)^{2} =\int\limits^y_0 {x^{2}f(x) } \, dx-17.5^{2} =\int\limits^y_0 {x^{2} *0.00025x^{2} } \, dx -17.5^{2} =321.82-306.25=15.6$

c) The function is equal to:

f(x)=k(1+2x)

$\int\limits^y_0 {k(1+2x)} \, =1$

where y=20

k=0.0024

$Ex=\int\limits^y_0 {xf(x)} \, dx =\int\limits^y_0 {x*0.0024(1+2x)} \, dx =13.3$

d) $Vx=Ex^{2} -(Ex)^{2} =\int\limits^y_0 {x^{2} f(x)} \, dx -13.3^{2}=\int\limits^y_0 {x^{2} *0.0024(1+2x)} \, dx-13.3^{2} =198.4-176.89=21.51$

8 0

3 years ago

A business is planning to make a new kind of speaker. The cost to produce x speakers is C=72,000+18x. Meanwhile, the revenue ear

Sophie [7]

[tex]\begin{gathered} C=\text{ 72000 + 18x} \\ R=\text{ 27x } \\ \\ R\text{ }Therefore, the company loses money if it sells less than 8000.

The answer is D.

7 0

1 year ago