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Jobisdone [24]
3 years ago
8

Henry bought 1/4 pounds of screws and 2/5 of backstop build a skateboard ramp. What is the total weight of the screws and nails

Mathematics
1 answer:
nexus9112 [7]3 years ago
6 0
It equals 0.65 pounds
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Five hundred ten of 650 high school students said that pizza was their favorite food in the school cafeteria.
ICE Princess25 [194]

If Five hundred ten of 650 high school students said that pizza was their favorite food. The margin of error is 0.0322.

<h3>Margin of error</h3>

Given:

Sample proportion=Five hundred ten=510

Sample size=650

Hence:

Margin of error=z×√p×(1-p)/n

Margin of error=2√510/650× (1-510/650)÷650

Margin of error=2√0.78461538×(1-0.78461538)÷650

Margin of error=2√0.78461538×0.21538462÷650

Margin of error=2√0.168994085÷650

Margin of error=2√0.0002599909

Margin of error=0.0322

Therefore the correct option is D.

Learn more about margin of error here:brainly.com/question/24289590

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7 0
2 years ago
Use a quadratic equation to find two numbers whose sum is 5 and whose product is ­- 24.
prisoha [69]
Hello 
if m s : sum   and p : <span> product
the </span><span> quadratic equation is : x²-sx+p=0
s = 5  p=-24
x²-5x-24 = 0 </span>
8 0
3 years ago
Which is equivalent to 42x +49.
Semmy [17]

Answer:

D. 7 (6x+7)

Step-by-step explanation:

Factor  7  out of  42x  +  49

4 0
3 years ago
Read 2 more answers
Simplify the expression. 3.7z to the power of 2+7.2+9z-1.2-2z+z to the power of 2.
Musya8 [376]
The answer is Would be 2 hehehehe hshshs x=2
4 0
3 years ago
Please help anyone plese lol
Kobotan [32]

Answer:

19.5

Step-by-step explanation:

78÷4

=39÷2

=19.5

The Answer is 19.5

3 0
3 years ago
Read 2 more answers
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