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3 years ago

Explain what happens to the cross products when the terms of a proportion are cross multiplied.

Mathematics

1 answer:

Temka [501]3 years ago

6 0

Answer:

The cross product is created

Step-by-step explanation:

A proportion is simply a statement that two ratios are equal. ... In problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. To find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

I hope this helped :)

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4. Kennedy buys a computer that was reduced in a sale by 10%. If the sale price of the

givi [52]

Answer:

N$12 576. 11

Step-by-step explanation:

Loss%=10%

S.P= N$11 480.50

C.P =?

Loss%=100(C.P - S.P)/C.P

10=100(C.P-11 480.50)/C.P

10C.P=100C.P - 1 148 050

1 148 050=100C.P - 10C.P

1 148 050=90C.P

C.P=N$12 576.11

6 0

3 years ago

PLZZZ HELP XD WILL GIVE BRAINLIEST WHERE TO PUT THE POINT ON THE NUMBER LINE!!!!!

lana66690 [7]

Every number has its purpose in this case you start at -3 then the negative sign tells you which way you are going but since we have another negative sign in between the number we go to the right instead of left with that said you put the point in number 4

8 0

3 years ago

The difference between of two numbers is 9. If the large number is one more than twice the smaller number, find the larger numbe

sleet_krkn [62]

The larger number is 17

Solution:

Let "x" be the larger number

Let "y" be the smaller number

The difference between of two numbers is 9

Therefore,

larger number - smaller number = 9

x - y = 9 -------- eqn 1

The large number is one more than twice the smaller number

Larger number = 1 + 2(smaller number)

x = 1 + 2y ------ eqn 2

Let us solve eqn 1 and eqn 2

Substitute eqn 2 in eqn 1

1 + 2y - y = 9

1 + y = 9

y = 9 - 1

y = 8

Substitute y = 8 in eqn 1

x - 8 = 9

x = 8 + 9

x = 17

Thus the larger number is 17

6 0

3 years ago

What is the ratio of quarters to nickels in a dollar

sleet_krkn [62]

For quarters we have:

$0.25x = 1$

Where,

x: number of quarters

Clearing x we have:

$x = \frac{1}{0.25}\\x = 4$

For nickels we have:

$0.05y = 1$

Where,

y: number of nickels

Clearing y we have:

$y = \frac{1}{0.05}\\y = 20$

Then, the ratio of quarters to nickels is:

$\frac{x}{y}= \frac{4}{20}$

Simplifying we have:

$\frac{x}{y} = \frac{1}{5}$

Answer:

The ratio of quarters to nickels in a dollar is:

$\frac{x}{y}= \frac{1}{5}$

5 0

3 years ago

Read 2 more answers

Francis heard that a car stereo system was on sale for 30% off. If the sale price was $57.75, what was the original price of the

matrenka [14]

Answer:

$75.08

Step-by-step explanation:

x over 57.75 = 30 over 100

57.75 * 30

1732.5 / 100

17.325

57.75 + 17.325

75.075

Simplify = $75.08

3 0

3 years ago