2 years ago

-2 1/5 - 1 3/10 help!!

Mathematics

1 answer:

xxTIMURxx [149]2 years ago

3 0

The answer would be -7/10

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the price of a stock went down $4.25 on monday and then down $2.75 on tuesday. what was the overall change in price for the two

Sonja [21]

Answer:

The overall change is -$7.00.

Step-by-step explanation:

If a price goes down $4.25 than it is a negative integer. Same situation if a price goes down $2.75; it is still a negative integer. These two numbers can be expressed as -$4.25 and -$2.75. Finding the overall change causes for adding. Same signs add and keep different signs subtract. -4.25+-2.75=7.00. Therefore, the overall change in price for the two days is -$7.00.

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Rewrite the subtraction as addition 3- (-10)

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<span>Rewrite the subtraction as addition 3- (-10)

= 3 + 10</span>

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3 years ago

9.4 The heights of a random sample of 50 college stu- dents showed a mean of 174.5 centimeters and a stan- dard deviation of 6.9

gladu [14]

Answer: a) (176.76,172.24), b) 0.976.

Step-by-step explanation:

Since we have given that

Mean height = 174.5 cm

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we need to find the 98% confidence interval.

So, z = 2.326

(a) Construct a 98% confidence interval for the mean height of all college students.

$x\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=(174.5\pm 2.326\times \dfrac{6.9}{\sqrt{50}})\\\\=(174.5+2.26,174.5-2.26)\\\\=(176.76,172.24)$

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Hence, a) (176.76,172.24), b) 0.976.

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3 years ago

Directions-Graph the following slope intercept equation

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I don’t really have an explanation

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2 years ago