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2 years ago

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

Mathematics

1 answer:

alina1380 [7]2 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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The formula for the area of a circle is A = πr2, where A = area and r = radius.

BaLLatris [955]

The area of a circle with radius of 5 feet is 25π square feet

Step-by-step explanation:

The area of a circle is found out using the formula

$A = \pi r^2$

Here A is the area

r is the radius of the circle and

pi is a constant

given

Radius = r = 5

We have to find the area in terms of pi

So,

$A = \pi r^2\\Putting\ r=5\\A = \pi *(5)^2\\A = 25\pi\ square\ feet$

Hence,

The area of a circle with radius of 5 feet is 25π square feet

Keywords: Area, radius

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2 years ago

Ten customers enter a convenience store during their lunch hour on Monday. The age of each customer is identified on the dot plo

Ksenya-84 [330]

F. 30 is the correct answer, for mean you just have to add all the ages together and divide by the number of customers

7 0

2 years ago

Read 2 more answers

In ΔJKL, k = 9.6 cm, l = 2.7 cm and ∠J=43°. Find ∠L, to the nearest 10th of a degree.

Bogdan [553]

Answer:

L = 10.64°

Step-by-step explanation:

From the given information:

In triangle JKL;

line k = 9.6 cm

line l = 2.7 cm; &

angle J = 43°

we are to find angle L = ???

We can use the sine rule to determine angle L:

i.e

$\dfrac{j}{SIn \ J} = \dfrac{l}{ SIn \ L}$

Using Pythagoras rule to find j

i,e

j² = k² + l²

j² = 9.6²+ 2.7²

j² = 92.16 + 7.29

j² = 99.45

$j = \sqrt{99.45}$

j = 9.97

∴

$\dfrac{9.97}{Sin \ 43} = \dfrac{2.7}{ Sin \ L}$

${9.97 \times Sin (L ) = (2.7 \times Sin \ 43)$

$= Sin \ L = \dfrac{ (2.7 \times Sin \ 43)}{9.97 } \\ \\ = Sin \ L = \dfrac{ (2.7 \times 0.6819)}{9.97 } \\ \\ = Sin \ L = 0.18466 \\ \\ L = Sin^{-1} (0.18466) \\ \\ L = 10.64 ^0$

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2 years ago

Solve the inequality.<br> 5(w - 3) < 5w + 20

saveliy_v [14]

Answer:

-15 < 20

Step-by-step explanation:

5(w - 3) < 5w + 20

Distribute;

5w - 15 < 5w + 20

Subtract 5w from both sides;

-15 < 20

7 0

1 year ago

Read 2 more answers

PLEASE HURRY!!! PLEASE

noname [10]

Answer:

going horizontally, 15, 3, 9, then 1, 3, 6, then 20, then, 40, 60

Step-by-step explanation:

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2 years ago

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

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