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Molodets [167]
3 years ago
10

Convert 2/5

Mathematics
2 answers:
netineya [11]3 years ago
8 0
The answer is b) 40%
Brrunno [24]3 years ago
4 0

Answer:

B.) 40%

Step-by-step explanation:

2/5 = 4/10 = 0.4

0.4 x 100% = 40%

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Nataliya [291]

We can write a proportion between short and long legs:

10.5\div k = 16.5\div 5.5

Solving for k yields

k = \dfrac{10.5\cdot 5.5}{16.5}=3.5

8 0
3 years ago
The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0°C at the freezing
Serjik [45]

Answer:

c) -1.75°

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 0, standard deviation of 1:

This means that \mu = 0, \sigma = 1

Find the reading that separates the bottom 4% from the others.

This is the 4th percentile, which is X when Z has a p-value of 0.04, so X when Z = -1.75.

Z = \frac{X - \mu}{\sigma}

-1.75 = \frac{X - 0}{1}

X = -1.75*1

X = -1.75

The correct answer is given by option c.

7 0
2 years ago
Mr. Schmidt is making strawberry jam. He fills 31-pint jars and 13-quart jars. Then he gives 20 quarts of jam to his friends. Ho
MArishka [77]
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3 years ago
How do you solve 45 = 3 (x + 1) using the distributive property?
Damm [24]

Answer:

x=14

Step-by-step explanation:

45 = 3 (x + 1)

Distribute the 3 to both terms in the parentheses

45 = 3x +3

Subtract 3 from each side

45-3 = 3x+3-3

42 = 3x

Divide each side by 3

42/3 = 3x/3

14 =x

8 0
3 years ago
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