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Vikki [24]
3 years ago
5

9. There are 40 minutes to solve a test of 60 questions. A student completes 20 questions in 20 minutes

Mathematics
1 answer:
svp [43]3 years ago
4 0
He solved 30 questions.
He solved one question in one minute.
This if he continued at the speed and there are 40 minutes to solve the test and he leaves 10 minutes earlier. He is left with 30 minutes and one minutes per question . Therefore, he solved 30 question.
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Obtaining a measure of intelligence from a group of college students would likely yield a somewhat normal distribution (that is,
ki77a [65]

Answer:

C. Mean

Step-by-step explanation:

We have been given that obtaining a measure of intelligence from a group of college students would likely yield a somewhat normal distribution (that is, there shouldn't be any extreme outliers).

We know that median is best measure of central tendency with extreme outliers, while mean is the best measure of central tendency when the data is normally distributed.

Mode is used when data are measured in a nominal scale.

Since the measure of intelligence from a group of college students yield a somewhat normal distribution, therefore, mean will be the best measure of central tendency.  

7 0
3 years ago
Solve this equation 5x-7=-12
cupoosta [38]

Answer:

5x - 7= -12

5x - 7+7 = -12+ 7

5x= -5

x= -1

Step-by-step explanation:

hope this helped

7 0
3 years ago
Read 2 more answers
Simplify 6^7/6^5 in index form
Oksanka [162]

Answer:

6²

Step-by-step explanation:

Using the rule of exponents

\frac{a^{m} }{a^{n} } ⇔ a^{(m-n)} , then

\frac{6^{7} }{6^{5} }

= 6^{(7-5)}

= 6²

6 0
3 years ago
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The line segment joining A(6, 3) to B(–1, –4) is doubled in length by having half its length added to each end. Find the coordin
mr Goodwill [35]

Answer:

  • (9.5, 6.5) and (-4.5, -7.5)

Step-by-step explanation:

Let the extended points be A' and B' and add the point M as midpoint of AB

<u>Coordinates of M are:</u>

  • ((6 - 1)/2, (3-4)/2) = (2.5, -0.5)

Now point A is midpoint of A'M and point B is midpoint of MB'

<u>Finding the coordinates using midpoint formula:</u>

  • A' = ((2*6 - 2.5),(2*3 - (-0.5)) = (9.5, 6.5)
  • B' = ((2*(-1) - 2.5), (2*(-4) - (-0.5)) = (-4.5, -7.5)

4 0
3 years ago
How many 1/4 cup servings of raisins are in 7/8 cups of raisins?
Ostrovityanka [42]

Answer:

7

Step-by-step explanation:

Divide 7/8 by 1/4.  (You divide the "supply" of raisins into 1/4 cup "parts".)

\frac{7}{8} \div \frac{1}{4} = \frac{7}{8} \times \frac{4}{1} = \frac{28}{8} =\frac{7}{1} =7

Multiply 7/8 by the reciprocal of 1/4 ("flip" the 1/4).

The result is 28/8, which can be simplified ("reduced") to 7.

3 0
2 years ago
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