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Ronch [10]
3 years ago
5

Rewrite with positive exponents: 7^-3

Mathematics
1 answer:
Advocard [28]3 years ago
3 0

Answer:

1/7^3 (One over seven thirds)

Step-by-step explanation:

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Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume t
PSYCHO15rus [73]

Answer:

(a) 93.19%

(b) 267.3

Step-by-step explanation:

The population mean and standard deviation are given as 502 and 116 respectively.

Consider, <em>X</em> be the random variable that shows the SAT critical reading score is normally distributed.

(a) The percent of the SAT verbal scores are less than 675 can be calculated as:

P(X

Thus, the required percentage is 93.19%

(b)

The number of SAT verbal scores that are expected to be greater than 575 can be calculated as:

P(X>575)=P(\frac{x-502}{116}>\frac{575-502}{116}\\P(X>575)=P(Z>\frac{575-502}{116})\\P(X>575)=P(Z>0.6293)\\P(X>575)=0.2673

So,

Out of 1000 randomly selected SAT verbal scores, 1000(0.2673) = 267.3 are expected to have greater than 575.

8 0
3 years ago
Write a unit rate for: 71 inches of cloth for $23.43.
deff fn [24]

Answer:

$0.33 per inch

Step-by-step explanation:

Divide cost by inch to get cost per inch.

4 0
3 years ago
In the diagram below, point P is circumscribed about quadrilateral ABCD. What is the value of x? (Pls answer I give lot of point
Vlada [557]

Answer:

D. 50

Step-by-step explanation:

130+x=180

x=50

6 0
3 years ago
2/10 = 20%= 0.2<br> True or false
Shalnov [3]

Answer:

True

Step-by-step explanation:

8 0
2 years ago
If the running track is 400 m long and leah runs 12 laps each day, how far does she run in total in meters?
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Leah runs 4800 meters in total
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3 years ago
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