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katen-ka-za [31]
3 years ago
9

9-5(-7x+5) a. –28x + 20 b. 35x + 14 c. 35x – 16 d. 35x + 34

Mathematics
2 answers:
earnstyle [38]3 years ago
5 0

9-5(-7x+5)

Use the distributive property first:

9 + 35x -25

Combine like terms:

35x-16

The answer is C.

lana [24]3 years ago
3 0

Good morning,

Answer:

<h2>c. 35x – 16</h2><h2 />

Step-by-step explanation:

9 - 5(-7x + 5) = 9 + 35x - 25 = 35x + 9 - 25 = 35x - (25-9) = 35x - 16.

:)

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ravis gas tank is 1/2 full .after he buys 2 gallons of gas it is 2/3 full how many gallons can ravis tank hold?
aliya0001 [1]
So
1/2x+2=2/3x
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1/2=3/6
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2=1/6x
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the tank can hold 12 gallon

8 0
3 years ago
Fred bought 7 games on clearance for $104.65. Each game was on sale for the same price. How much did each game cost? (Show your
NISA [10]

Answer:

Each game cost $14.95.

Step-by-step explanation:

104.65 = 7x

104.65/7 = x

14.95 = x

3 0
3 years ago
Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. A vending m
Anuta_ua [19.1K]

Answer:

A) 1.96%

Step-by-step explanation:

You need to know the band between 5.48 g and 5.82 g, the mean is 5.67 g and the standard deviation is .0.070 g, with that information you can calculate the percentage to the left of the mean and the percentage to the right of the mean and add them.

To know its percentage you have to calculate the z score for both values.

z = \frac{x-\mu}{\sigma}

x is the value being evaluated

μ is the mean

σ is the standard deviation

For 5.48 g:

z = \frac{5.48-5.67}{0.070} =-2.714

and is equivalent to 0.0034

For 5.82 g:

z = \frac{5.82-5.67}{0.070} = 2.143

and is equivalent to 0.9838

Those numbers mean that the percentage below 5.48 is equivalent to the 0.34% of the values and the percentage below 5.82 is equivalent to 98.38% of the values. Then the percentage rejected is the percentage above 5.82, 100 - 98.38 = 1.62% plus the percentage below 5.48, 0.34%.

Percentage rejected = 1.62% + 0.34% = 1.96%

7 0
3 years ago
Protozoa are single-celled organisms. Paramecium aurelia is one type of protozoan. The number of paramecium aurelia doubles ever
Sphinxa [80]

Answer:

16 days

Step-by-step explanation:

Given that:

Number of paramecium Aurelia doubles every 1.25days

5 days ago ; number of paramecium Aurelia = 1

How many are there now?

Using the relation :

Multiplier^(total number of days / time it takes to multiply)

Multiplier = doubles = 2

Total number rof days =. 5

Time it takes to. Multiply = 1.25

The formula becomes :

Number(n) of ptotozoan in 5days is given by 2^(5/1.25)

n = 2^(5/1.25)

n = 2^4

n = 2 * 2 * 2 * 2 =. 16

5 0
3 years ago
How do I solve the scientific notation?
Olegator [25]

Answer:

for example if you gave 2x ten to the power of 3, that is scientific notation. So if you take it out of scientific notation you hwv3 2000.

Step-by-step explanation:

3 is amount of times you move to decimal to the right. So there is an invisible decimal after 2 so that gives you 2.0 So you take that decimal point and move it to the right three times. then you have 2000. but if you had 2× 10 to the power of 4, you would move the decimal to the right 4 times.

5 0
3 years ago
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