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Alex73 [517]
3 years ago
12

What is the simplified expression for the expression below?

Mathematics
2 answers:
givi [52]3 years ago
5 0
-1(2x+3)-2(x-1)
-2x-3-2x+2
-4x-1
Kitty [74]3 years ago
4 0

Answer:

The correct option is 4.

Step-by-step explanation:

The given expression is

-1(2x+3)-2(x-1)

Using distributive property we get

-1(2x)-1(3)-2(x)-2(-1)

On further simplification we get

-2x-3-2x+2

Combined like terms.

(-2x-2x)+(-3+2)

(-4x)+(-1)

-4x-1

The simplified form of given expression is –4x – 1.

Therefore the correct option is 4.

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The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0 min. If one such class is r
svp [43]

Answer:

0.1 = 10% probability that the class length is between 51.5 and 51.7 min, that is, P(51.5 < X < 51.7) = 0.1.

Step-by-step explanation:

A distribution is called uniform if each outcome has the same probability of happening.

The uniform distributon has two bounds, a and b, and the probability of finding a value between c and d is given by:

P(c \leq X \leq d) = \frac{d - c}{b - a}

The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0 min.

This means that a = 50, b = 52

If one such class is randomly selected, find the probability that the class length is between 51.5 and 51.7 min.

P(51.5 \leq X \leq 51.7) = \frac{51.7 - 51.5}{52 - 50} = \frac{0.2}{2} = 0.1

0.1 = 10% probability that the class length is between 51.5 and 51.7 min, that is, P(51.5 < X < 51.7) = 0.1.

3 0
2 years ago
Janice NEEDS 3 GALLONS of lemonade for a party. She has 4 quarts, 6 pints and 4 cups of lemonade already made. How many CUPS of
slamgirl [31]

Answer:

32 cups

Step-by-step explanation:

To find the total number of cups, we have to convert the measures that are not in cups to cups and add

1 quart  = 4 cups

4 quarts = 4 x4 = 16 cups

1 pint = 2 cups

6 pints = 2 x 6 = 12 pints

total number of cups = 16 + 12 + 4 = 32 cups

4 0
3 years ago
Solve 3/5=8/y. Round to the nearest tenth. 15.2 9.8 13.3 18.8
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3/5 = 3/y
40 = 3y
Divide both by 3
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Solve for F: C=5/9(F-32)<br> please explain process thanks
timama [110]
C=\frac{5}{9}(F-32)\ \ \ \ /\cdot\frac{9}{5}\\\\F-32=\frac{9}{5}C\ \  \ \ /+32\\\\F=\frac{9}{5}C+32\\\\F=\frac{9C}{5}+\frac{160}{5}\\\\F=\frac{9C+160}{5}
4 0
3 years ago
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Find r <br> 0.5(r+2.75)=3
Alekssandra [29.7K]

Answer:

r=3.25

Step-by-step explanation:

6 0
3 years ago
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