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BlackZzzverrR [31]
2 years ago
12

What is |12.8| equal I am so confused

Mathematics
1 answer:
irakobra [83]2 years ago
3 0

Answer:

|12.8| has a magnitude of 12.8

If that's not what you are asking, here's another possible answer:

12.8=12 4/5

12.8= 1280%

Step-by-step explanation:

Hope this helps!

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What expressions are equivelent to −3(2+7)
ivanzaharov [21]

Answer:

<h2>-3(2 + 7) = -3(9) or -3(2 + 7) = (-3)(2) + (-3)(7)</h2>

Step-by-step explanation:

-3(2+7)\\\\=-3(9)\\=-27\\\\\text{use the distributive property}\ a(b+c)=ab+ac\\=(-3)(2)+(-3)(7)\\=-6-21\\=-27

8 0
3 years ago
The diameters of ball bearings are distributed normally. The mean diameter is 130 millimeters and the variance is 9. Find the pr
Crank

Answer:

0.0478

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score = 135 mm

μ is the population mean = 130 mm

σ is the population standard deviation.

We are given variance = 9

Standard deviation = √variance = √9 = 3

Hence

z = 135 - 130/3

z = 1.66667

Probability value from Z-Table:

P(x<135) = 0.95221

P(x>135) = 1 - P(x<135) = 0.04779

Approximately to 4decimal places = 0.0478

8 0
3 years ago
What does this math problem mean |3x|=9
Vladimir79 [104]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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Dennis wants to buy a card for his wife. Dennis calculates the amount of the card as $4.50. The actual price of a card is $4. Wh
Alex17521 [72]

Answer:

12.5%

Step-by-step explanation:

$4.50-$4/$4 x 100%

0.5/4x100%

50/4= 25/2 = 12.5%

8 0
3 years ago
Find the volume of the rectangular prism
HACTEHA [7]

Answer:

421.875

Step-by-step explanation:

because the formula of the rectangular prism is l*w*h

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