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3 years ago

2019 CO88 Main Content RP 20

Mathematics

1 answer:

Westkost [7]3 years ago

7 0

Answer:

140/56=2,5$ every hot dog

$175/$2,5=70 hot dogs

70-56=14 hot dogs

he have to sell 14 more hot dogs to earn 175$

Step-by-step explanation:

You might be interested in

What is the midpoint of (-5,6) (8,-6)

MAXImum [283]

Answer:

The answer is

Step-by-step explanation:

The midpoint M of two endpoints of a line segment can be found by using the formula

$M = ( \frac{x1 + x2}{2} , \: \frac{y1 + y2}{2} )$

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-5,6) (8,-6)

The midpoint is

$M = ( \frac{ - 5 + 8}{2} \: , \: \frac{6 - 6}{2} ) \\ = ( \frac{3}{2} \: , \: \frac{0}{2} )$

We have the final answer as

$( \frac{3}{2} \: , \: 0)$

Hope this helps you

8 0

3 years ago

A man bought 8 boxes highlighters, each with 24 highlighter pens inside, for $9 each box. He sold the highlighters for $1 each.

Katarina [22]

Answer:

The man earned money:

Step-by-step explanation:

$1 x 24 pieces =$24 revenue per box

$24 - $9 = $15 earning per box

$15 x 8 boxes = $120 total earnings

3 0

3 years ago

A tooth-whitening gel is to be tested for effectiveness. A group of 85 adults have volunteered to participate in the study. Of t

Lina20 [59]

Answer:

(a) 3, 5 and 6

Step-by-step explanation:

In the experiment, 43 are to be given a gel that contains the tooth-whitening chemicals while the remaining 42 are to be given a placebo. Therefore, a placebo is used.

The 43 that will receive the gel are to be selected randomly.

After the experiment, the whiteness of the two groups will be compared to see the effect of the gel.

Therefore for the experiment to be completely random, 3, 5, and 6 apply.

(b)

For the experiment to be double-blind, the researchers who will evaluate the whiteness and interact with the subjects, and the subjects would not know which subjects received either the whitening gel or the placebo.

5 0

3 years ago

The price of a computer component is decreasing at a rate of 15% per year. State whether this decrease is linear or exponential

Margaret [11]

Answer:

Since the price is given by an exponential function, the decline in price is exponential.

The component will cost $36.8475 in three years.

Step-by-step explanation:

The equation for the price of a component has the following format:

$P(t) = P(0)(1-r)^{t}$