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yaroslaw [1]
3 years ago
7

Why are (1, 2) and (2, 1) sot equal ordered pairs​

Mathematics
1 answer:
alina1380 [7]3 years ago
5 0

Answer:

Step-by-step explanation:

(1,2) and (2,1) are not equal ordered pairs becasue their corresponding elements are not equal.

Two Ordered Pairs are said to be equal if the corresponding first components are equal alongside the corresponding second components are equal.

for example:

(3,1) and (3,1)

here corresponding element of 3 is 3 and of 1 is 1 .so they are called equal ordered pairs.

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Three friends got jobs at stores in the mall. Nina earns $117.60 for hours 14 of work. Ty earns for $148.50 hours 18 of work. Ki
marysya [2.9K]

Answer:

Kim has the highest pay rate in dollars per hour

Step-by-step explanation:

we know that

To find out the unit pay rate divide the total earning by the total time

so

Nina earns $117.60 for hours 14 of work

\frac{117.60}{14}=\$8.4\ per\ hour

Ty earns for $148.50 hours 18 of work

\frac{148.50}{18}=\$8.25\ per\ hour

Kim earns for $137.60 hours 16 of work

\frac{137.60}{16}=\$8.60\ per\ hour

8.6 > 8.4 > 8.25

therefore

Kim has the highest pay rate in dollars per hour

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3 years ago
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Answer:

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Use the diagram of the right triangle above and round your answer to the nearest hundredth.
Yakvenalex [24]

Answer:

value of a = 6.93 m

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the given triangle is a right angled triangle, so

by using trigonometry.

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and we know,

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\tan(a)  =  \frac{a}{b}

so, by above values of tan ( a ) we get,

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\frac{a}{12}  =  \frac{1}{ \sqrt{3} }

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4 0
3 years ago
How do the expressions 72 divided and -72divided by (-9) and compare when they are evaluated?
padilas [110]

Complete question is;

How do the expressions 72 divided by 9 and -72 divided by (-9) compare when they are evaluated?

A. They have different values and are different signs.

B. They have different values but are the same sign.

C. They have the same value but are different signs.

D. They have the same value and the same sign

Answer:

D. They have the same value and the same sign

Step-by-step explanation:

For 72 divided by 9,it is;

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Usually when we don't have any sign in front of a number, it is said to be positive.

Thus, the answer can be expressed as; +8

Also, when -72 is divided by (-9), it is;

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Similar to the first division, since no sign is attached to 8,it is said to be positive as +8.

This means both divisions yield same values and same signs

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