All categories

4 years ago

The grades on a geometry midterm at Santa Rita are roughly symmetric with u = 82 and o = 4.0.

Mathematics

1 answer:

Ainat [17]4 years ago

6 0

Answer:

z-score for Emily's exam grade is 2.50

Step-by-step explanation:

Z score helps to determine position of any observed data with respect to mean of data, when it is measured in terms of standard deviation.

Formula for z score is given by

z = (data from sample - mean)/ standard deviation

Given in the problem

mean = 82

standard deviation = 4.0

sample score = 92

Z = (92-82)/4 = 10/4

Z = 2.5

z-score for Emily's exam grade is 2.50

You might be interested in

Soloha48 [4]

Answer:

Step-by-step explanation:

the scale factor of 2 means the sides of Δ DEF are twice those of Δ ABC.

However, corresponding angles remain congruent , then

largest angle in Δ DEF is also 82°

5 0

2 years ago

Solve using the quadratic formula. v2 + 11v + 18 = 0

Rzqust [24]

Answer:

Answer is given below with explanations

Step-by-step explanation:

${v}^{2} + 11v + 18 = 0 \\by factorization we get (v + 9)(v + 2) = 0 \\ v = - 9 \: \: or \: \: v = - 2$

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION.

7 0

3 years ago

6) What is the value of digit 7 in 0.057 *.///what is the answer _____________________

Elodia [21]

Answer: 7/1000 (choice C)

This is because the 7 is in the thousandths decimal place. We put the 7 over 1000 to form the fraction 7/1000.

8 0

3 years ago

Write 0.43 as a fraction, reduced to the lowest terms

alexdok [17]

Answer:

43/100

Step-by-step explanation:

It would have to be 43/100 becuase 43 is a prime number, therefore it cannot be simplified.

8 0

3 years ago

What is the following quotient? StartFraction RootIndex 3 StartRoot 60 EndRoot Over RootIndex 3 StartRoot 20 EndRoot EndFraction

FrozenT [24]

Answer:

$\sqrt[3]{3}$

Step-by-step explanation:

We are required to simplify the quotient: $\dfrac{\sqrt[3]{60} }{\sqrt[3]{20}}$

Since the numerator and denominator both have the same root index, we can therefore say:

$\dfrac{\sqrt[3]{60} }{\sqrt[3]{20}} =\sqrt[3]{\dfrac{60} {20}}$

$=\sqrt[3]{3}$

The simplified form of the given quotient is $\sqrt[3]{3}$ .

6 0

3 years ago

Read 2 more answers