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lions [1.4K]
3 years ago
8

Use the quadratic formula to find the roots: -3x^2 + 27x = 42​

Mathematics
1 answer:
ch4aika [34]3 years ago
8 0

Answer:

x=2,x=7

Step-by-step explanation:

-3x^2+27x=42

x^2-9x+14=0

x^2-2x-7x+14=0

x*(xi2)-7(x-2)=0

(x-2)*(x-7)=0

x-2=0

x-7=0

x=2

x=7

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What’s the multipcative inverse of 1/4
LuckyWell [14K]

Hey!

Answer:

4/1

Step-by-step explanation:

  • The multiplicative inverse of a number is the reciprocal of it. (a/b → b/a).
  • Basically you divide 1 by the other number. (1 ÷ 1/4 = 4 or 4/1).

Hope This Helps :)

7 0
3 years ago
Read 2 more answers
20 points to whoever gets the correct answer uwu
S_A_V [24]

Answer:

Angle EFG = 104 degrees

Angle GFH = 76 degrees

Step-by-step explanation:

Angle EFG and Angle GFH are a linear pair, which means that they add up to 180 degrees.

Angle EFG = 4n + 20 and Angle GFH = 2n + 34, so 4n + 20 + 2n + 34 = 180.

We can then combine like terms, getting 6n + 54 = 180.

Then, we can subtract both sides by 54, getting 6n = 126.

Lastly, we can divide both sides by 6, getting n = 21.

EDIT - solve for EFG and GFH:

Angle EFG = 4n + 20 = 4(21) + 20 = 104 degrees

Angle GFH = 2n + 34 = 2(21) + 34 = 76 degrees

8 0
3 years ago
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Divide the number 720 into the following Ratios<br><br>2:1:3<br><br>5:4​
solmaris [256]

Answer:

Ratio 1 = a(240

=b)120

=c)360

Ratio 2=a)400

=b)320

Step-by-step explanation:

On both of the ratios you first add them then divide one by one like this for example 2+1+3= 6

then 2/6 ÷720 = 120 ×2 =240 then you do this to the other numbers as well.

6 0
3 years ago
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5,000 people visited a bookfair in the first week. The numbers increased by 10% in the second week. how many people visited the
lorasvet [3.4K]

Answer:

5500

Step-by-step explanation:

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3 0
3 years ago
Math help. <br> Solve for x
Dafna1 [17]
X=2\sqrt{3}
5 0
3 years ago
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