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Gnom [1K]
3 years ago
10

PLZZZZZZZZ HELP ME Find the interest earned at 12% on $1000 for 6 months. A.60 B.70 C.80 D.90

Mathematics
1 answer:
tatuchka [14]3 years ago
7 0

Answer:

A

Step-by-step explanation:

$1000 x .12 =120/2=60

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A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 46.046.0 and
Gala2k [10]

Answer:

The probability of selecting a class that runs between 50.2550.25 and 51.2551.25 minutes is 0.10

Step-by-step explanation:

The Uniform Distribution, also known as Rectangular Distribution, is a type of Continuous Probability Distribution. It has a continuous random variable restricted to a finite interval and its probability function has a constant density during this interval.

The formula of probability if given by:

f(x)=

\left \{ {{\frac{1}{b-a}; \ a \leq x \leq b  } \atop {0}; \ x \ otherwise } \right.

In this exercise a= 46.0 and b= 56.0

The probability of selecting a class that runs between 50.2550.25 and 51.2551.25 minutes is:

\int\limits^{51.25}_{50.25} {\frac{1}{56-46} } \, dx = \int\limits^{51.25}_{50.25} {\frac{1}{10} } \, dx = \frac{1}{10} \times (51.25 - 50.25)=\frac{1}{10}=0.1

7 0
3 years ago
A school ordered 5 boxes of paper. There were 28 sheets of paper in each box. How many sheets of paper did the school order in a
tatuchka [14]

Answer:

the answer is 140 pieces of paper

Step-by-step explanation:

6 0
3 years ago
Identify the gerund phrase, the direct object of the verb requires. The job requires getting your hair cut to a short, safe leng
Mekhanik [1.2K]
D is ur answer I think
3 0
3 years ago
Read 2 more answers
What is the sum of the measures, in degrees, of the interior angles of a 25-sided polygon?
inna [77]
Exterior angle = 360/25 =  14.4 degrees

internal angle = 180-14.4 = 165.6 degrees

sum of all the angles = 165.6*25 = 4140 degrees answer
4 0
3 years ago
A publishing company claims that in fall 2019, the average price of college textbooks for a single semester is $385. Suppose you
hram777 [196]

Answer:

We accept H₀ . We don´t have enough evidence to express the publisher claim is not true

Step by Step explanation:

We must evaluate if the mean of the price of college textbooks is different from the value claimed by the publisher

n < 30 then we must use t - distrbution

degree of freedom   n  - 1     df = 22 - 1     df = 21

As the question mentions " different " that means,  a two-tail test

At 0,01 significance level     α  = 0,01       α/2  =  0,005

and t(c)  = 2,831

Test Hypothesis

Null Hypothesis                      H₀          μ  =  μ₀

Alternative hypothesis           Hₐ          μ  ≠  μ₀

To calculate t(s)

t(s)  =  (  μ  -  μ₀ ) /σ/√n

t(s)  =  (  433,50 - 385 ) / 86,92 / √22

t(s)  =  2,6171

Comparing   t(c)   and t(s)

t(s) < t(c)

Then  t(s) is in the acceptance region we accept H₀. We don´t have enough evidence to claim that mean price differs from publisher claim

6 0
3 years ago
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