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3 years ago

Please help me with this math problem, it has fractions.

Mathematics

1 answer:

viktelen [127]3 years ago

5 0

Answer:

if you multiply two negatives together, then the answer is positive, so -1/4 of -4 is just 4 / 4 which is 1

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when a pair of shoes is sold at 12.5% discount, the selling price is 78.75. Find the original price of the pair of shoes and the

faltersainse [42]

The original price was 90$ so you saved 11.25$

3 0

3 years ago

I have tried different attempts but still can’t solve it

zloy xaker [14]

Hello!

First you to do 65 * 0.20

0.20 is 20% as a decimal

65 * 0.20 = 13

$13 is how much John saves.

To find out how much the skateboard cost you subtract how much he saved by the cost of the skateboard

65 - 13 = 52

The skateboard cost $52

Hope this helps!

5 0

3 years ago

A discrete random variable is a variable that is randomly chosen and can take

Colt1911 [192]

Answer:

false

Step-by-step explanation:

4 0

2 years ago

katie bought 4 sweaters that each cost the same amount and 1 skirt that costs 20$. The items she bought cost a total of 160$ bef

Alika [10]

Hello, in order to solve this you first need to take $20 subtracted from 160 that leaves you with 140 next because she bought 4 sweaters you need to divide your remaining cash spent by 4 to get a total of $35 a sweater.

I hope this is what you were looking for, have a great day!

8 0

3 years ago

An object is dropped from a small plane. As the object falls, its distance, d, above the ground after t seconds, is given by the

DedPeter [7]

The inequality can be used to find the interval of time taken by the object to reach the height greater than 300 feet above the ground is:

$d = -16t^2 + 1000$

Solution:

The object falls, its distance, d, above the ground after t seconds, is given by the formula:

$d = -16t^2 + 1000$

To find the time interval in which the object is at a height greater than 300 ft

Frame a inequality,

$-16t^2 + 1000 > 300$

Solve the inequality

Subtract 1000 from both sides

$-16t^2 + 1000 - 1000 > 300 - 1000\\\\-16t^2 > -700$

$16t^2 < 700\\\\Divide\ both\ sides\ by\ 16\\\\t^2 < \frac{700}{16}\\\\Take\ square\ root\ on\ both\ sides\\\\t < \sqrt{\frac{700}{16}}\\\\t < \pm 6.61$

Time cannot be negative

Therefore,

t < 6.61

And the inequality used is: $-16t^2 + 1000>300$

6 0

3 years ago