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3 years ago

If ΔEFG ~ ΔLMN with a ratio of 2:1, which of the following is true?

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

3 0

Answer:

i think it is A

Step-by-step explanation:

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X² + y² = 8

ohaa [14]

Answer:

$(2,2)~ \text{and}~ (-2,-2)$

Step by step explanation:

$x^2 +y^2 =8~~~~~~...(i)\\\\x-y=0~~~~~~~~~...(ii)\\\\\text{From (ii):}\\\\x-y = 0 \implies x = y\\\\\text{Substitute x = y in eq (i):}\\\\~~~~~~y^2 +y^2 =8\\\\\implies 2y^2 = 8\\ \\\implies y^2 = \dfrac 82\\\\\implies y^2 = 4\\\\\implies y = \pm\sqrt 4\\\\\implies y = \pm 2\\\\\text{Substitute y = x in equation (i):}\\ \\~~~~~~x^2 +x^2 = 8\\ \\\implies 2x^2 = 8\\\\\implies x^2 = \dfrac 82\\\\\implies x^2 = 4\\\\\implies x = \pm\sqrt 4\\\\\implies x = \pm2\\\\$

$\text{Hence,}~ (x,y) = (\pm2, \pm 2)$

3 0

2 years ago

Before leaving to visit Mexico Levant traded 270 us dollars for 3,000 Mexican pesos when he returned from Mexico, he had 100 pes

In-s [12.5K]

Answer:

Step-by-step explanation:

3,000/ 270 = 11.11

100/ 11.11 = 9

8 0

3 years ago

Richard bought a pair of shoes for $37.00, a tie for $22.00, and a new belt for $17.00. If the sales tax is 7.5%, how much sales

nadezda [96]

It seems to me, that if you were to add the price of all three items together, then multiply by 7.5%, you'd have the answer. Remember that 7.5% = .075 ... in other words, that is the number you would multiply the sum of the items by. Does that help?

8 0

3 years ago

Can someone help me on all of these

lisov135 [29]

Answer:

See below!

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Yes!

1) Centre

2) Radius {Plural: Radii}

3) Diameter

4) Arc

5) Pi is the ratio of a circle's circumference to its diameter

6) 3.14

7) 6m

8) 7 in

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

Please, please give brainliest, it would be greatly appreciated, I only a few more before I advance, thanks!

7 0

3 years ago

Read 2 more answers

5. What ordered pair represents the

Gekata [30.6K]

Answer:

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = x + 1 ← is in slope- intercept form

with c = 1, thus

(0, 1) ← is the y- intercept

6 0

3 years ago