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horsena [70]
3 years ago
8

Select the correct answer.

Mathematics
1 answer:
bekas [8.4K]3 years ago
6 0
25% as a decimal is 0.25, and since we subtract 25% we use (1 - 0.25)=0.75.
The price of the items after discount is $248.50*0.75 = $186.38
The sales tax (5% = 0.05) is added on, so we multiply by (1 + 0.05) = 1.05
$186.375*1.05 = $195.699 = $195.70
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HELP ME PLSSS Which of the following number sentences is an example of the associative property of multiplication?
MariettaO [177]

Answer:

The first or third one

Step-by-step explanation:

Associative property is where you can switch the place of the digits and it still have the same answer in the end.

4 0
3 years ago
A popcorn company builds a machine to fill 1 kg bags of popcorn. They test the first hundred bags filled and find that the bags
ELEN [110]

Answer:

Step-by-step explanation:

Given that a popcorn company builds a machine to fill 1 kg bags of popcorn. They test the first hundred bags filled and find that the bags have an average weight of 1,040 grams with a standard deviation of 25 grams.

i.e. Sample mean = 1040 and

Sample std dev s = 25 gm

Sample size n = 100

Hence by central limit theorem we have the sample mean follows a normal distribution with mean =1040 and std dev = s = 25 gm

\bar X = N(1040,25)

Normal curve would be with mean 1040 and std deviatin 25

b) P(X>1115)

= 1-0.9987

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i.e. 0.13% would receive a bag that had a weight greater than 1115 grams

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I need an explanation for the problem 4v2=-12v-9. I don't understand why it factors into 4v+3 and 4v+3
kirza4 [7]

Answer:

The factors are 2v+3,2v+3.

The factors are not 4v+3,4v+3

Step-by-step explanation:

Equation is 4v^2=-12v-9.

This equation can be written as follows:

4v^2+12v+9=0

Here,

12v=6v+6v

Therefore,

4v^2+6v+6v+9=0\\2v(2v+3)+3(2v+3)=0\\(2v+3)(2v+3)=0

So, the factors are 2v+3,2v+3.

The factors are not 4v+3,4v+3

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3 years ago
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The answer is: " 6.4 blocks " .

________________________________________________________

3.2 blocks (one way), PLUS: 3.2 blocks the other way:

3.2 + 3.2 = 6.4 blocks .

or: (3.2) * 2 = 6.4 blocks .

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The answer is: " 6.4 blocks " .

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Elis [28]
Answer:
X = 100$ + 5a$
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