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MrMuchimi
3 years ago
6

It is right?????????

Mathematics
2 answers:
yaroslaw [1]3 years ago
7 0

yes it's right because 7. repeats y values

mel-nik [20]3 years ago
5 0

Good job u got the answer right.

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Elijah is taking a multiple choice test with a total of 100 points available. Each question is worth exactly 2 points. What woul
Luden [163]

Answer:

84 points

y= 100-2x where y= total score (0 through 100) and x= # of questions wrong (0 through 50)

Step-by-step explanation:

100- 2(8) = y

100-16 = y

84=y

Since each question (x) is worth two points (2) we have to multiply each wrong question by two (2x). And then since we're deducting point from the possible points (100) we have to subtract (100-2x)

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3 years ago
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Anyone knows how to do this?
amid [387]

Answer:

i do not know how to do this yet but it looks like a high school thing

Step-by-step explanation:

4 0
2 years ago
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The scores on a mathematics exam have a mean of 70 and a stadard deviation of 7. Find the x-value that corresponds to the z-scor
mylen [45]

Answer:

59.85

Step-by-step explanation:

The scores on a mathematics exam have a mean of 70 and a stadard deviation of 7. Find the x-value that corresponds to the z-score -1.45.

We solve the above question using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean = 70

σ is the population standard deviation = 7

z = -1.45

Hence:

-1.45 = x - 70/7

Cross Multiply

-1.45 × 7 = x - 70

-10.15 = x - 70

x = -10.15 + 70

x = 59.85

7 0
2 years ago
An initial investment of $200 is now valued at $350. The annual interest rate is 8% compounded continuously. The
Dmitry_Shevchenko [17]

Answer:

7 years

Step-by-step explanation:

An initial investment of $200 is now valued at $350. The annual interest rate is 8% compounded continuously. The equation represents the situation, where t is the number of years the money has been invested. About how long has the money been invested? Use a calculator and round your answer to the nearest whole number.

6 0
3 years ago
3x^2-12x-21=0 solve by completing the square
morpeh [17]

Answer:

x = 2 ± √11 (I believe)

Step-by-step explanation:

3 0
3 years ago
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