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3 years ago

You earned 43 out of 50 points on your reading quiz. What percent of the points did you earn?

Mathematics

2 answers:

mylen [45]3 years ago

8 0

Answer:

the answer would be 86%

snow_lady [41]3 years ago

7 0

Answer:

86%

Step-by-step explanation:

43 / 50

43 x 2 = 86

50 x 2 = 100

86/100 = 86%

Therefore the answer is 86%

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What does the sign ^ mean

ratelena [41]

Answer:

in the power

Step-by-step explanation:

10^2

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2 years ago

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Martin charges $10 for every 5 bags of leaves he rakes. Last weekend, he raked 2 bags of leaves. How much money did he earn?

melisa1 [442]

If 10$-5bags;
2$-1bag;
4$-2bags

Solution: 4$

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3 years ago

Does anybody know the answer to this?

faust18 [17]

Answer:

C (136)

Step-by-step explanation:

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3 years ago

M=(N-2)/N solve for N

Tpy6a [65]

M = (N-2)/N

M = N² - 2N

N² - 2N - M = 0

To find N we need to use quadratic formula.

For our equation x = N, a=1, b= -2, c= -M

$x=\frac{-b+/-\sqrt{b^{2}-4ac} }{2a}
\\ \\N=\frac{-(-2)+/-\sqrt{(-2)^{2} -4*1*(-M)} }{2*1}
\\ \\ N=\frac{2+/-\sqrt{4+4M} }{2} \\ \\ N=\frac{-2+/-2\sqrt{1+M} }{2} = -1+/-\sqrt{1+M} \\ \\ N = -1 +\sqrt{1+M} \ or\ N=-1-\sqrt{1+M}$

4 0

3 years ago

The number of calories burned at the gym is normally distributed with a mean of 425 and a standard deviation of 51. Find the Z-s

Galina-37 [17]

Answer:

(a) -3.708

(b) 1.706

(c) 0.490

Step-by-step explanation:

The z-score of normal distribution is given as:

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

(a)

Given:

Score is, $x=268$

Mean value is, $\mu =425$

Standard deviation is, $\sigma = 51$

z-score is, $z=\frac{268-425}{51}=\frac{-157}{51}=-3.078$

(b)

Given:

Score is, $x=512$

Mean value is, $\mu =425$

Standard deviation is, $\sigma = 51$

z-score is, $z=\frac{512-425}{51}=\frac{87}{51}=1.706$

(c)

Given:

Score is, $x=450$

Mean value is, $\mu =425$

Standard deviation is, $\sigma = 51$

z-score is, $z=\frac{450-425}{51}=\frac{25}{51}=0.490$

6 0

2 years ago