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3 years ago

How is adding two negative fractions like adding two positive fractions. ples help me

Mathematics

2 answers:

NNADVOKAT [17]3 years ago

5 0

two un-positive numbers make a positive

Step-by-step explanation:

For example: -2 + -2= 4

Yuliya22 [10]3 years ago

3 0

Answer:

A negative fraction subtracted from another is the same thing as adding the positive complement of that fraction. Make the denominators (the bottom of the fraction) the same, if they are not already. You can only add halves to halves or quarters to quarters or tenths to tenths and so on. Hope this helps!!

Step-by-step explanation:

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The Maui Breeze frozen yogurt shop sells a cup of yogurt for $3.00 and charges $0.15 for each topping. Which equation represents

VladimirAG [237]

C = 3 + 0.15t

Hope this helps!

5 0

3 years ago

What is the value of the fourth term in a geometric sequence for which a1=30 and r=1/2

lisov135 [29]

Answer:

a(4) = 15/4

Step-by-step explanation:

The general formula for a geometric series with common ratio r and first term a(1) is

a(n) = a(1)*r^(n - 1)

and so, if a(1) = 30 and r = 1/2, we have

a(n) = 30*(1/2)^(n - 1)

and the fourth term is then:

a(4) = 30*(1/2)^(4 - 1) = 30/8 = 15/4

8 0

3 years ago

uppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.2 and a standard deviation of 1.49. Us

liubo4ka [24]

Answer:

99.85% of American women have shoe sizes that are less than 12.67

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 8.2

Standard deviation = 1.49

Using the empirical rule, what percentage of American women have shoe sizes that are less than 12.67

12.67 = 8.2 + 3*1.49

12.67 is 3 standard deviations above the mean.

Since the normal distribution is symmetric, 50% of the measures are below the mean and 50% are above. Of those 50% above, 99.7% are between the mean and 12.67. So

0.5 + 0.997*0.5 = 0.9985

99.85% of American women have shoe sizes that are less than 12.67

6 0

3 years ago

What is -6:<br> -The coefficient <br> -The variable<br> -The constant

yKpoI14uk [10]

It’s The coefficient

7 0

4 years ago

Suppose you nake $5 bet on the numbet 0 on a roulette wheel wirh 38 slots labelef 00, 0, 1, 2, 3, .. , 36. If 0 is spun you win

Fynjy0 [20]

Answer:

$13.16

Step-by-step explanation:

For each individual spin, there are two possible outcomes:

- There is a 1 in 38 chance of winning $175.

- There is a 37 in 38 chance of losing $5.

The expected value for each spin is the sum of the products of each outcome by their respective probability.

In 50 spins, the expected value is:

$E(50) = 50*(175*\frac{1}{38} -5*\frac{37}{38})\\E(50)=-\$13.16$

You can expect to lose $13.16 if you spin the wheel 50 times.

8 0

4 years ago