1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Contact [7]
2 years ago
9

Daniel wanted to know his approximate score on the final exam for his mathematics class. His professor hinted that his score was

well above the class average. The professor announced that the mean for the class final exam was 90 with a standard deviation of 7. Given Daniel's z score of 1.67, what is the raw score for Daniel's exam grade?102.45100.00101.6988.17
Mathematics
1 answer:
frozen [14]2 years ago
3 0

Answer: 101.69

Step-by-step explanation:

Formula we use to find the z-score :-

z=\dfrac{x-\mu}{\sigma}    (1)

Given : \mu=90

\sigma=7

Daniel's z score : z= 1.67

Let x be the raw score for Daniel's exam grade, then substitute the values of \mu,\ \sigma\ and \ x in (1), we get

1.67=\dfrac{x-90}{7}\\\\\Rightarrow\ x-90=7\times1.67\\\\\Rightarrow\ x=11.69+90=101.69

Hence, the raw score for Daniel's exam grade = 101.69

You might be interested in
Teresa graphs the following 33 equations: y=2xy=2x, y=x2+2y=x2+2, and y=2x2y=2x2. She says that the graph of y=2xy=2x will event
Neko [114]
The correct question is 
<span>Teresa graphs the following 3 equations: y=2x, y=x2+2, and y=2x2. She says that the graph of y=2x will eventually surpass both of the other graphs. Is Teresa correct? Why or why not?

we have that
y=2x
y=x</span>²+2
y=2x²

using a graph tool
see the attached figure

<span>We can affirm the following
</span>the three graphs present the same domain-----> the interval (-∞,∞)

The range of the graph y=2x  is the interval (-∞,∞)

The range of the graphs y=x²+2 and y=2x² is the interval [0,∞)

therefore
<span>Teresa is not correct because the graph of y = 2x will not surpass the other two graphs since in the interval of [0, infinite) the three graphs present the same range</span>

3 0
3 years ago
What is the solution to this system of equations?
dalvyx [7]

There is no solution.

Step-by-step explanation:

Given:

y = 2x + 1

4x - 2y = 4

Substitute y = 2x + 1 into 4x - 2y = 4

4x - 2(2x + 1) = 4

4x - 4x - 2 = 4

0x = 4 + 2

0x = 6

Anything to the multiple of zero is zero. Hence 0x = 0, and 0 ≠ 6

So there is no solution to the equation.

8 0
2 years ago
HELP ASAP Linear Equations
Scilla [17]

Answer:

4th choice: I and IV only

Step-by-step explanation:

Change the form of the given equation to standard form.

y = -2/3 x + 2

3y = -2x + 6

2x + 3y = 6

Now compare this equation with the 4 choices.

Any equation that has the same x- and y-terms but a different constant term is parallel.

I. is parallel.

II. and III. are not parallel.

Look at IV.:

4x + 6y = 3

Divide both sides by 2:

2x + 3y = 3/2

IV. is also parallel.

Answer: 4th choice: I and IV only

4 0
3 years ago
Read 2 more answers
How do i solve systems by substitution
julsineya [31]
Answer: x = 2, y = 9

Step-by-step explanation:

y = 9x - 9 Substitute x for 2

y = 9(2) - 9 Multiply 9 with 2

y = 18 - 9 Subtract 18 - 9

Final Answer: y = 9 and x = 2


Mark me as brainliest!


8 0
3 years ago
Find the volume of the cylinder. Round your answer to the nearest tenth.
eduard

Answer:84.82 volume nearest tenth is = 84.8

Step-by-step explanation: Find the number in the tenth place

88 and look one place to the right for the rounding digit

22. Round up if this number is greater than or equal to

5 5 and round down if it is less than

5.5

7 0
3 years ago
Other questions:
  • (08.03 MC)
    9·2 answers
  • Thirteen less than six times a number is equal to 11 more than four times the number
    6·1 answer
  • 20 % of 2 is equal to
    9·2 answers
  • 16. How many hundreds are there in a Crore? Write it.​
    9·2 answers
  • What is the lateral and surface area? ​
    7·1 answer
  • Write an equation that shows how much money they would make (y) if
    12·2 answers
  • WHAT IS IT CAN YOU TELL PLEASE
    12·2 answers
  • Impossible question for me plz help
    8·1 answer
  • -4 2/3 times (-1 1/2)<br> SHOW YOUR WORK TO GET BRAINLIEST~~~~!!~
    14·1 answer
  • A professor went to a website for rating professors and looked up the quality rating and also the "easiness" of the six full-tim
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!