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2 years ago

Which ratio is equivalent to

Mathematics

1 answer:

Andrews [41]2 years ago

8 0

Answer:

A.) 4h : $36

Step-by-step explanation:

Why it's right: they equal the same thing

5/45 = 1/9

4/36 = 1/9

Why it's wrong: similar, but backwards

54/6 = 9

Just plain wrong:

4/50 = 2/25

63/9 = 7

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The ratio equivelent ot 1/3 is

Ann [662]

1:3 is equivalent to 1/3

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2 years ago

A professor at a local university noted that the exam grades of her students were normally distributed with a mean of 73 and a s

Umnica [9.8K]

Answer:

88.51 is the minimum score needed to receive a grade of A.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73

Standard Deviation, σ = 11

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

Formula:

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

We have to find the value of x such that the probability is 0.0793.

$P( X \geq x) = P( z \geq \displaystyle\frac{x - 73}{11})=0.0793$

$= 1 -P( z \leq \displaystyle\frac{x - 73}{11})=0.0793$

$=P( z \leq \displaystyle\frac{x - 73}{11})=0.9207$

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

$P(z \leq 1.410) = 0.9207$

$\displaystyle\frac{x - 73}{11} = 1.410\\x =88.51$

Hence, 88.51 is the minimum score needed to receive a grade of A.

3 0

2 years ago

Part 10, What is the area of this figure? NO LINKS!!!

Tamiku [17]

Answer:

shaded area = 601 mm²

Step-by-step explanation:

Area of rectangle = Length * Breadth

Area of first section = 12 * 16 = 192 mm²

Area of 2nd middle section = 8 * ( 16 - 10 ) = 48 mm²

Area of the bottom section = 19 * 19 = 361 mm²

Area of total therefore = 192 mm² + 48 mm² + 361 mm²

= 601 mm²

8 0

1 year ago

Read 2 more answers

All I need to know is how to do 13. After I know how to do 13, I'll know how to do the rest. Please show your work and explain i

s2008m [1.1K]

MK is the same as NL.
Just read the rest of the questions.
They practically give you the answers.

7 0

2 years ago

I need help I'm stuck

Yuliya22 [10]

2/7.
2/7 + 5/7 =1 Just add the numerator if the denominator is the same

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2 years ago

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