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Evgesh-ka [11]
3 years ago
7

-4х + 5y=— 28 4x – 3y = 20

Mathematics
1 answer:
ZanzabumX [31]3 years ago
3 0

I hope it's correct and it helps I don't know how to explain it lol

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Select all the ratios that are equivalent to the ratio 12 : 3. Explain how you know.
oksano4ka [1.4K]

Answer:

the answers are c, d, &f

Step-by-step explanation:

the equivalence to 12:3

1200:300. = 12:3 (reduce by 100)

12:3= 4:1 (reduce by 3)

24:6= 12:3 (reduce by 2)

3 0
3 years ago
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1. Rotate ABC 180° about the origin making<br> DEF.<br><br> List all congruent sides and angles:
Vedmedyk [2.9K]

Answer:

<h3>              ∠ABC≅∠DEF </h3><h3>              ∠BCA≅∠EFD </h3><h3>              ∠CAB≅∠FDE </h3><h3>           AB≅DE,  BC≅EF,  CA≅FD</h3>

Step-by-step explanation:

To rotate point A 180° about the origin (point O) we draw a line from that point (A) throu the origin, measure the distance from the point A to the origin, and then measure the same distance on the other side of the origin to get rotated point. Mark it. The angle at the rotated point will be congruent to ∠A

The same goes for points B and C

Angles at pair of given and rotated point are congruent.

Sides of triangle are congruent if they lay between two congruent angles.

6 0
3 years ago
If you can run 4 laps in 5.25 minutes, how many laps can you run in 20 minutes?
mina [271]

i believe you would be able to run 15 laps

7 0
4 years ago
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Two factors have an estimated product of 10,000. One is a single digit. What two factors can they be. Explain your thinking
RideAnS [48]
It could be 5000 and 2, because 2 is a single digit and the product equals 10000.
5 0
3 years ago
Which is factor of the polynomial x2-12x+27
sweet [91]

Answer:

(x - 9)(x - 3)

Step-by-step explanation:

Step 1: Write out quadratic

x² - 12x + 27

Step 2: Factor

<em>What 2 numbers add up to -12 and multiply to 27?</em>

-9 and -3 add up to -12 and multiply to 27.

(x - 9)(x - 3)

5 0
3 years ago
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