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larisa86 [58]
3 years ago
15

Two mechanics worked on a car. The first mechanic worked for

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
8 0
76.25 is the answer because 1525 divided by 20 equals 76.25
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Janine is packing carrots. Each large box holds 20 2-pound bags of carrots. If janine has 800 bags of carrots, how many boxes ca
grigory [225]
This is a division problem: 

Each box holds 20 bags.

800 bags / 20 bags per box = # of boxes 

40 boxes are needed. 
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3 years ago
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5 miles to 35 miles in a fraction ?
LenKa [72]
5/35
Simplify by dividing both sides by 5
1/7
Final Answer: 1/7

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=%5Csf%5Clarge%5Cgreen%7B%5Cunderbrace%7B%5Cred%7BQuestion%2A%7D%7D%7D%3A" id="TexFormula1" tit
Kaylis [27]
<h3><u>Part A</u></h3>

\sf \rightarrow  y^2 - 3y - 4y +12

factor the common term 'y' and '-4'

\sf \rightarrow  y(y - 3) - 4(y - 3)

collect into groups

\sf \rightarrow  (y- 4)(y - 3)

<h3><u>Part B</u></h3>

\sf \rightarrow  9x^2 - 12x + 4

middle term split

\sf \rightarrow  9x^2 - 6x - 6x+ 4

factor the common term '3x' and '-2'

\sf \rightarrow  3x(3x - 2) -2( 3x-2)

collect into groups

\sf \rightarrow  (3x -2)( 3x-2)

simplify the following

\sf \rightarrow  (3x -2)^2

5 0
2 years ago
5<br> What is the measure of the angle shown?<br> will give brainliest
Ainat [17]

Answer:

between 180 and 365 cuz it's a reflex angle

3 0
2 years ago
An insurance company sells automobile liability and collision insurance. Let X denote the percentage of liability policies that
qaws [65]

Answer:

-764.28

Step-by-step explanation:

Given the joint cumulative distribution of X and Y as

F(x,y) = \frac{xy(x+y)}{2000000}\ \ \ \, \ 0\leq x100, 0\leq y\leq 100

#First find F_x and probability distribution function ,f_x(x):

F_x(x)=F(x,100)\\\\\\=\frac{100x(x+100)}{2000000}\\\\\\\\=\frac{100x^2+10000x}{2000000}\\\\\\=>f_x(x)=\frac{x}{10000}+\frac{1}{200}

#Have determined the probability distribution unction ,f_x(x), we calculate the Expectation of the random variable X:

E(X)=\int\limits^{100}_0 \frac{x^2}{10000}+\frac{x}{200}  dx \\\\\\\\=|\frac{x^3}{30000}+\frac{x^2}{400}|\limits^{100}_0\\\\=58.33\\\\

#We then calculate E(X^2):

E(X^2)=\int\limits^{100}_0 \frac{x^3}{10000}+\frac{x^2}{200}\ dx\\\\=\frac{x^4}{40000}+\frac{x^3}{600}|\limits^{100}_0=4166.67\\\\Var(X)=E(X^2)-(E(X))^2=4166.67-58.33^2\\\\Var(X)=764.28

Hence, the Var(X) is 764.28  

4 0
3 years ago
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