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2 years ago

Need help on number 2

Mathematics

1 answer:

Minchanka [31]2 years ago

8 0

The initial amount is 4800 and 300 is taken out each month..u will first start by saying how many months are they in a year,12 months...
u will take 12 multiplied by 300 in which u will obtain,3600 and the remaining balance will be 4800 -3600=1200.
u will later on say in 12 months his remaining balance will be 1200,and how many months will be there if his balance will be 1500.
12 months =1200
what about 1500 =15months

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2 years ago

Based on data collected from its production processes, Crosstiles Inc. determines that the breaking strength of its most popular

alexandr1967 [171]

Answer:

16% of its popular porcelain tile will have breaking strengths greater than 412.5 pounds per square inch.

Step-by-step explanation:

We are given that the breaking strength of its most popular porcelain tile is normally distributed with a mean of 400 pounds per square inch and a the standard deviation of 12.5 pounds per square inch.

Let X = the breaking strength of its most popular porcelain tile

SO, X ~ Normal( $\mu=400,\sigma^{2}=12.5^{2}$ )

The z score probability distribution for normal distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

where, $\mu$ = mean breaking strength of porcelain tile = 400 pounds per square inch

$\sigma$ = standard deviation = 12.5 pounds per square inch

Now, probability that the popular porcelain tile will have breaking strengths greater than 412.5 pounds per square inch is given by = P(X > 412.5)

P(X > 412.5) = P( $\frac{X-\mu}{\sigma}$ > $\frac{412.5-400}{12.5}$ ) = P(Z > 1) = 1 - P(Z $\leq$ 1)

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Therefore, 16% of its popular porcelain tile will have breaking strengths greater than 412.5 pounds per square inch.

7 0

2 years ago

Can 10 people be divided into two groups with a ratio of 1 : 2? Explain.

den301095 [7]

Let the groups be x and 2x

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1 year ago

Help please is for now

zmey [24]

Answer: 5

Steps:
5x - 2y = 30
5(8) - 2y = 30
40 - 2y = 30
-2y = 30 - 40
-2y = -10
y = -10/-2
y = 5

I would appreciate the brainliest if this answer was correct and the steps were clear and helpful! :)

3 0

2 years ago