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3 years ago

Please help me it’s due today and idk math .

Mathematics

2 answers:

Ulleksa [173]3 years ago

8 0

Answer:

you need to ask one bye one. easyer for us

Fofino [41]3 years ago

4 0

1: C

2:A

3:cant see choices answer is n>5

4:D

5: A

6:can’t see choices answer is x>-6

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For a normal distribution with μ=500 and σ=100, what is the minimum score necessary to be in the top 60% of the distribution?

STatiana [176]

Answer:

475.

Step-by-step explanation:

We have been given that for a normal distribution with μ=500 and σ=100. We are asked to find the minimum score that is necessary to be in the top 60% of the distribution.

We will use z-score formula and normal distribution table to solve our given problem.

$z=\frac{x-\mu}{\sigma}$

Top 60% means greater than 40%.

Let us find z-score corresponding to normal score to 40% or 0.40.

Using normal distribution table, we got a z-score of $-0.25$ .

Upon substituting our given values in z-score formula, we will get:

$-0.25=\frac{x-500}{100}$

$-0.25*100=\frac{x-500}{100}*100$

$-25=x-500$

$-25+500=x-500+500$

$x=475$

Therefore, the minimum score necessary to be in the top 60% of the distribution is 475.

3 0

2 years ago

Drilon got 63 out of 72 correct in his test. What fraction of the marks did he get correct?

tatyana61 [14]

Answer:

87.5%

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

For brainiest:):):):):):):)

exis [7]

I used 3.14 for pi to solve easier.

6. 6.28

7. 21.98

8. 94.2

6 0

2 years ago

Help me on this question..........

aleksandrvk [35]

Answer: $18

Explanation: 6x3

7 0

3 years ago

The width of a rectangle is 5 units less than the length. The area of the rectangle is 6 units. What is the width, in units, of

Readme [11.4K]

Answer:

The width of rectangle is 1 unit.

Step-by-step explanation:

Given:

The area of rectangle is 6 units and its width is 5 units less than the length.

So, to find the width of rectangle.

Let the length be $x$ and the width be $x-5$ .

Now, to find the width we put the formula of area of rectangle:

Area = length × width

$6= x\times (x-5)$

$6=x^{2}-5x$

$0=x^{2}-5x-6$

$0=x^{2}-6x+x-6$

$0=x(x-6)+1(x-6)$

$0=(x-6)(x+1)$

<em>On solving equation we get:</em>

$x-6=0, x+1=0$

Therefore, we take the value x=6 as it is positive value:

$x-6=0$

$x=6$

So, the width of rectangle:

Width = $x-5$

= $6-5$

= $1$

Therefore, the width of rectangle is 1 unit.

8 0

3 years ago