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2 years ago

900 is what percent of 1200

Mathematics

1 answer:

xeze [42]2 years ago

8 0

Answer:

75%

Step-by-step explanation:

900 /1200= .75=75%

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cole has a plastic cuo that has 125 milliliters of wqter in it.he drinks 37 milliliters of tue water.how much water is left in t

melomori [17]

You would need to subtract 37 from 125 to find the answer.

125-37=88

8 0

2 years ago

Which expression means 7 more than a number?

olga2289 [7]

Seven more than a number would be B. d + 7

whenever you hear a seven (or any other number) MORE THAN, think of adding that number!

Hope this helps :)

4 0

2 years ago

A quadrilateral has angles measuring 105°,80°and 45°.What is the measure of the fouth angle?

valentina_108 [34]

The measurement of fourth angle is: 130°

Further explanation:

Let A, B, C and D be the four angles.

m∠A=105°

m∠B=80°

m∠C=45°

We know that the sum of interior angles of a quadrilateral is 360°

So,

m∠A+m∠B+m∠C+m∠D=360°

105°+80°+45°+m∠D=360°

230°+m∠D=360°

m∠D=360°-230°

m∠D=130°

The measurement of fourth angle is: 130°

Keywords: Quadrilateral, Interior angles

Learn more about quadrilateral at:

#LearnwithBrainly

3 0

2 years ago

The lifetime of a certain type of battery is normally distributed with mean value 15 hours and standard deviation 1 hour. There

KIM [24]

Answer:

If the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 15

Standard Deviation, σ = 1

Sample size = 4

Total lifetime of 4 batteries = 40 hours

We are given that the distribution of lifetime is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling:

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{1}{\sqrt4} = 0.5$

We have to find the value of x such that the probability is 0.05

P(X > x) = 0.05

$P( X > x) = P( z > \displaystyle\frac{x - 40}{0.5})=0.05$

$= 1 -P( z \leq \displaystyle\frac{x - 40}{0.5})=0.05$

$=P( z \leq \displaystyle\frac{x - 40}{0.5})=0.95$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 40}{0.5} = 1.64\\x = 40.825 \approx 40.83$

Hence, if the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.

8 0

2 years ago

What does a square pluse be square

Vaselesa [24]

?? that’s not a sentence

6 0

2 years ago

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