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3 years ago

Enter the values for the highlighted variables to complete the steps to find the sum:

Mathematics

1 answer:

Rina8888 [55]3 years ago

4 0

Answer:

a=-1

b=-9

c=9

d=3

e=3

f=2

g=1.5

Step-by-step explanation:

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PWEASE HELP I WILL MARK CHU BRAINLIST >:3

Vanyuwa [196]

Answer:

The scale factor is

Is a reduction

Step-by-step explanation:

we know that

The scale factor is the ratio of the corresponding side of resulting triangle by the corresponding side of the first triangle

Let

z-----> the scale factor

x------> the corresponding side of resulting triangle

y------> the corresponding side of the first triangle

In this problem we have

substitute

The scale factor is less than one

therefore

Is a reduction

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I need to find the equal expression to -m(2m+2n)+3mn+2m². Help please?

spin [16.1K]

$m(2m+2n)+3mn+2m^2\implies \stackrel{\textit{distributing}}{2m^2+2mn}+3mn+2m^2 \\\\\\ 2m^2+2m^2+2mn+3mn\implies \stackrel{\textit{adding like-terms}}{4m^2+5mn}$

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3 years ago

A probability distribution for a random variable Y is given by P(Y=y)=cy, for y=1,2,4,5 and c is a constant. Find E(Y), the expe

Dahasolnce [82]

Answer:

$c(1+2+4+5) =1$

$c =\frac{1}{12}$

Now we can find the expected value with this formula:

$E(Y) =\sum_{i=1}^n Y_i P(Y_i) =\sum_{i=1}^n cy_i *y_i = cy^2_i$

And replacing we got:

$E(Y) = \frac{1}{12} (1^2 + 2^2 + 4^2 +5^2) = \frac{46}{12}= \frac{23}{6}$

Step-by-step explanation:

For this case we know the following probability mass function given:

$P(y) = cy , y= 1,2,4,5$

For this case we need to satisfy the following condition in order to have a probability distribution function:

$\sum_{i=1}^n P(y_i) =1$

And we have this:

$c(1+2+4+5) =1$

$c =\frac{1}{12}$

Now we can find the expected value with this formula:

$E(Y) =\sum_{i=1}^n Y_i P(Y_i) =\sum_{i=1}^n cy_i *y_i = cy^2_i$

And replacing we got:

$E(Y) = \frac{1}{12} (1^2 + 2^2 + 4^2 +5^2) = \frac{46}{12}= \frac{23}{6}$

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The polygons are similar. Find the value of x.

Softa [21]

Check the picture below.

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3 years ago

I WILL MAKE YOU THE BRAINLIEST EASY QUESTION

trapecia [35]

Answer:

You can convert the denominator of each to 16 to compare each fraction. The wrenches should go in order from least to greatest: 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4. Place on number line between 0 and 1. The number line shows values that are least on the left to the greatest values to the right.

Step-by-step explanation:

You can find a common denominator to compare all the fractions. The common denominator should be the LCM or lowest common multiple of 2, 4, 8, and 16. Since all can multiply to 16, this is the common denominator.

1/2 = 8/16

3/4 = 12/16

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5/16

7/16

9/16

11/16

Now place in order according to the numerator value:

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5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4

Place these on the number line in order between 0 and 1.

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3 years ago