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Alika [10]
3 years ago
15

Y=4x^2-4x-8 using the quadratic formula

Mathematics
1 answer:
densk [106]3 years ago
8 0

Answer:

4(x+1)(x-2)

Step-by-step explanation:

factor the expression: 4x^2-4x-8

4(x^2-x-2)

write as a difference: 4(x^2+x-2x-2)

factor out x: 4(x(x+1)-2(x+1)),

then factor out x+1:

4(x+1)(x-2)

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mina [271]
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3 0
2 years ago
Miguel has 48 coins.of the 48 coins 5/8 are dimes.how many of the coins are dimes
Ivahew [28]
A simple way you could solve this is by drawing a tape graph.
Draw a long rectangular box.
Cut the box into 8 pieces, seeing as how 5/8 of the coins are dimes.
We have to take 48 and divide it by 8, we get 6, so now we know how many dimes are evenly split into each piece.
Now color in 5 pieces of the tape.
This represents the 5 in 5/8.
Now to find the number of coins, simply multiply 5 by 6, you get the answer of 30.
I hope this helps, if you are confused with any part of my explanation, ask and I will clarify.
5 0
4 years ago
Read 2 more answers
Please help me i give brainliest
bazaltina [42]

Answer:

Step-by-step explanation:

1. 120+21=141

2. 21-3=18

3. 7x-21

4. 20+x

5. 45+4x

6. 40+5c

7. 20+22r+26s

It will be nice if you give me brainliest

Good luck!

4 0
3 years ago
A town doubles its size every 70 years. If the population is currently 3,000, what will the population be in 140 years?
Tatiana [17]

Answer:

12000

Step-by-step explanation:

3000x2^(140/70)

4 0
3 years ago
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Tiffany is planning a vacation. The hotel costs $60 per night and her flight costs $220. Tiffany has $600 dollars to spend on th
Masteriza [31]

Answer:

60n+220=600

Step-by-step explanation:

6 0
3 years ago
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