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3 years ago

The orange turtle, Maria, moved 250 centimeters in 9.4 minutes.Which calculation gives you her speed as a unit rate?

Mathematics

2 answers:

KATRIN_1 [288]3 years ago

7 0

Answer:

250 divided by 9.4 equals 26.6

Step-by-step explanation:

choli [55]3 years ago

6 0

To find the speed you would take
distance/time. So 250 \ 9.4 = 26.6cm/m

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Find m when 4^(m)*4^(2)=12

miv72 [106K]

Step-by-step explanation:

4^m * 4^2 = 12

4^(m + 2) = 4^(log4 12)

m + 2 = log4 (12)

m = log4 (12) - 2.

4 0

4 years ago

33. Suppose that the scores on a statewide standardized test are normally distributed with a mean of 78 and a standard deviation

tino4ka555 [31]

Given the scores on a statewide standardized test are normally distributed

Mean = μ = 78

Standard deviation = σ = 3

Normalize the data using the z-score by using the following formula and chart:

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

Estimate the percentage of scores of the following cases:

(a) between 75 and 81

so, the z-score for the given numbers will be:

$\begin{gathered} 75\rightarrow z=\frac{75-78}{3}=\frac{-3}{3}=-1 \\ 81\rightarrow z=\frac{81-78}{3}=\frac{3}{3}=1 \end{gathered}$

As shown, the percentage when (-1 < z < 1) = 68%

(b) above 87

$87\rightarrow z=\frac{87-78}{3}=\frac{9}{3}=3$

The percentage when (z > 3) = 0.5%

(c) below 72

$72\rightarrow z=\frac{72-78}{3}=\frac{-6}{3}=-2$

The percentage when (z < -2) = 0.5 + 2 = 2.5%

(d) between 75 and 84

$\begin{gathered} 75\rightarrow z=\frac{75-78}{3}=-\frac{3}{3}=-1 \\ 84\rightarrow z=\frac{84-78}{3}=\frac{6}{3}=2 \end{gathered}$

The percentage when ( -1 < z < 2 ) = 68 + 13.5 = 81.5%

3 0

1 year ago

Write the decimal 0.006 as a fraction. A. 6/10.000 b. 6/100 c. 6/1,000 d. 6/10

Margarita [4]

The answer is C. One you enter the third decimal space the fraction moves to the thousandths place, so it would be 6/1000

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3 years ago

7(2a+1) -4 (8a+3) plz help

maksim [4K]

Answer:

.7(2a +1) - 4(8a +3)

14a + 7 - 32a + 3

14a - 32a +7+3

= -18a + 10

Step-by-step explanation:

hello

hope that will help you

4 0

4 years ago

Ms.Peralta's friend Mike is a construction worker. Mike gets paid $15 an hour. After working 9 hours he gets paid 1.25 times his

asambeis [7]

Answer:

Mike made $ 200.63 last Friday.

Step-by-step explanation:

Since Ms. Peralta's friend Mike is a construction worker who gets paid $ 15 an hour, and after working 9 hours he gets paid 1.25 times his hourly rate, and last Friday Mike worked for 5 hours - took an 1 hr and 15 minute break for lunch (does not count toward his work hours) - and worked for an additional 7.5 hours, to determine how much money did Mike make last Friday the following calculation must be performed:

5 + 7.5 = 12.5

12.5 - 9 = 3.5

9 x 15 + (3.5 x (15 x 1.25)) = X

135 + 3.5 x 18.75 = X

135 + 65.625 = X

200.63 = X

Therefore, Mike made $ 200.63 last Friday.

4 0

3 years ago