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3 years ago

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TRUE OR FALSE."Some isosceles triangles are not equilateral.''

1 answer:

leva [86]3 years ago

8 0

This is true. An isosceles triangle is one that has two equal sides and two equal angles. The third side can be any length and the third angle will also vary depending on the other two angles. An equilateral triangle is one where all sides and angles are equal. An isosceles can be equilateral, but it does not have to be.

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A recipe calls for 1 cup of sugar and 5 cups of water.How much sugar is used per cup of water?

scoundrel [369]

1/5 cups of sugar are used for every cup of water.

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A triangle has one side that measures 4x and two sides that measure x + 5 each. Write an

Tamiku [17]

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There are three children’s in Kadri family.the sum of their ages is 15 the product of their age is 80 how old are each of the ka

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Answer:

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3 years ago

Help test due tonight!! *no links please *

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Step-by-step explanation:

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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