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3 years ago

Whats 8 divided by 2 1/2

Mathematics

2 answers:

Marta_Voda [28]3 years ago

8 0

Answer:

3.2

Step-by-step explanation:

Georgia [21]3 years ago

3 0

Answer:

3.2 or 3 1/5

Step-by-step explanation:

If you are dividing by a half then you can just think of, in your case, 8 divided by 2 minus 1/2 which would get you to 3.5, or 3 and 1/2, then you just make 1/5 into a decimal and that is your new second digit.

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Daniel wanted to know his approximate score on the final exam for his mathematics class. His professor hinted that his score was

Marizza181 [45]

Answer:

The raw score for his exam grade is 99.69.

Step-by-step explanation:

Given : The professor announced that the mean for the class final exam was 88 with a standard deviation of 7. Given Daniel's z score of 1.67.

To find : What is the raw score for his exam grade?

Solution :

The formula use to find the z-score is

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

Where, z=1.67 is the z-score

$\mu=88$ is the means

$\sigma=7$ is the standard deviation

x is the raw score for his exam grade

Substitute the values,

$1.67=\dfrac{x-88}{7}$

$1.67\times 7=x-88$

$11.69=x-88$

$x=88+11.69$

$x=99.69$

Therefore, the raw score for his exam grade is 99.69.

7 0

3 years ago

11. Evaluate f (x)=- x + 2 for f( – 5) and f(1).

kenny6666 [7]

Answer:

-3 and positive 3

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Select the correct answer.

Tomtit [17]

Answer:

Step-by-step explanation:

7 0

3 years ago

a) If a regular octagon and regular hexagon both have the same side lengths, which will have the greater area?

nika2105 [10]

Answer:

Octagon

Step-by-step explanation:

Formula for a polygon is :

A = 1/2 x a x P

a = apothem (distance from center to the midpoint of a side
P = perimeter (sum length of the sides)

Since a regular octagon has 8 sides, and a regular hexagon has 6, the octagon will have the greater area due to greater perimeter.

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2 years ago

6) What is the markup rate on a $230 game system that sells for $345? *

Anna71 [15]

Answer:

Step-by-step explanation:

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3 years ago