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2 years ago

What is the value of y in the equation 2(3y + 6 + 3) = 196 − 16?

Mathematics

2 answers:

Vlad [161]2 years ago

6 0

The answer is 27, I had it on a test.

Liono4ka [1.6K]2 years ago

4 0

Step 1: Simplify using distributive property, and other methods needed
2(3y+6+3)=196−16 6y+18=180
Step 2: Subtract 18 from both sides.
 6y+18=180
-18 -18
6y=162
Step 3: Divide both sides by 6.
 6y/6=162/6

y=27

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From 12,000 graphing calculators produced by a manufacturer, an inspector selects a random sample of 550 calculators and finds

maria [59]

Answer:

131

Step-by-step explanation:

Using proportion,

If Out of 550 calculators = 6 are defective,

Then out of 12000 calculators = ? are defective

$\frac{12000 calculators}{550calculators} * 6$

= 21.8 * 6

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∴ Approximately 131 calculators are defective

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3 years ago

Select all the rates that correspond to a unit rate of $6 per sandwich. You must select all correct responses to receive credit.

faltersainse [42]

Answer:

B, C, and E

Step-by-step explanation:

A. 42/6 = 7 Not correct

B. 42/7 = 6 Correct

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2 years ago

Estimate the product of 37 x 62 = ________. Select the equation that correctly represents how to round each factor. (2 points)

irina1246 [14]

It’s the first one 40 times 60

7 0

2 years ago

Find the length x. pls help

scoray [572]

Answer:

x = 6

Step-by-step explanation:

To find x we set up an equation as so:

$\frac{4.5}{x} =\frac{6}{8}$

Then we solve by multiplying 4.5 by 8 and 6 by x

$6x=36$ Solve for x

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To check our answer when we substitute x or 6 we divide to make sure both sides equal the same number

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4 0

2 years ago

The pucks used by the National Hockey League for ice hockey must weigh between and ounces. Suppose the weights of pucks produced

Dahasolnce [82]

Answer:

$P(5.5$

And we can find this probability using the normal standard distribution or excel and we got:

$P(-2.769$

Step-by-step explanation:

For this case we assume the following complete question: "The pucks used by the National Hockey League for ice hockey must weigh between 5.5 and 6 ounces. Suppose the weights of pucks produced at a factory are normally distributed with a mean of 5.86 ounces and a standard deviation of 0.13ounces. What percentage of the pucks produced at this factory cannot be used by the National Hockey League? Round your answer to two decimal places. "

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

$X \sim N(5.86,0.13)$