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choli [55]
3 years ago
9

If 5k = -25, then 5k - 1 = -25 - 1 Segment proof

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
6 0
Yeah cuz u could +1 to each side of the second equation to get rid of both the -1’s and that is equivalent to the first equation :)
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For every 14 ice-cream cones you buy, you get 2 free. How many free ice-cream cones will you get if you buy 56 cones?
Ksenya-84 [330]
Ok so i just did 56/14 and got 4. So this means 14 goes into 56 4 times, so now i did 4 x 2 and got 8. So the answer is 8 free cones.

4 0
3 years ago
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4 0
3 years ago
What two numbers add to 10 and multiply to -192? How do you find it?
Levart [38]
There is a way to do this algebraically using equations, but it is really messy so I am going to go over the way to do it. The way you do this is by finding whole numbers that multiply to make -192. Start with 1 and 192, 2 and 96, 3 and 64, etc and make the smaller number negative. 
The reason why you make the smaller number negative is because we are looking for what numbers add together to make a positive number (10). If the bigger number was negative, then we would get a negative sum. 
From what i could find, there aren't any whole numbers that satisfy this, and i doubt that the question would want you to find decimals for this. 

The way to find this with equations (in short) is to have to variables, x and y, and make two equations. in this case x+y=10 and xy=-192. Solve one equation for a variable and then use substitution to plug that variable into the other equation. if you do this you get really long decimals.
7 0
3 years ago
Could somebody help me with this please? i forgot how to do these.
goblinko [34]
Since a full circle has 360degrees and this circle only has two angles, subtract the arc of the known angle to find the arc of the unknown angle.

Angle DGF + angle DEF= 360degrees

Angle DGF + 70degrees= 360 degrees

Angle DGF = 290 degrees

The arc of the unknown angle is 290 degrees
4 0
4 years ago
Solve this ratio 18 hours to 2 days as a fraction in simplest form
dlinn [17]
Answer 3/8. 24 hours in a day and there’s 2 days which is 48 hours. 18/48 simplifies to 3/8
8 0
4 years ago
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