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omeli [17]
3 years ago
13

What is the answer of 4x if x=2

Mathematics
2 answers:
Marina86 [1]3 years ago
4 0

Answer:21

Step-by-step explanation:

X =21

Semmy [17]3 years ago
3 0

Answer:

8

Step-by-step explanation:

4(x)

4(2)

8

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(I) x²-8x = -16<br>(ii) x²+2x+1 = 0<br>(iii) 4x²-24x-36=0<br>Solve please...........​
algol13

(I)

Given equation is x²-8x = -16

⇛ x²-8x+16 = 0

⇛ x²-4x-4x+16 = 0

⇛ x(x-4)-4(x-4) = 0

⇛ (x-4)(x-4) = 0

⇛ x-4 = 0 or x-4 = 0

⇛ x = 4 or x = 4

(ii)

Given equation is x²+2x+1 = 0

⇛ x²+x+x+1 = 0

⇛ x(x+1)+1(x+1) = 0

⇛ (x+1)(x+1) = 0

⇛ x+1 = 0 or x+1 = 0

⇛ x = -1 or x = -1

(iii)

Given equation is 4x²-24x-36 = 0

⇛ 4(x²-6x-9) = 0

⇛ x²-6x-9 = 0

⇛ x²-2(x)(3) = 9

On adding 3² both sides then

⇛ x²-2(3)x)+3² = 9+9

⇛ (x-3)² = 18

⇛ (x-3) = ±√18

⇛ x-3 = ±√(2×9)

⇛ x-3 = ±3√2

⇛ x = 3±3√2

⇛ x = 3+3√2 or 3-3√2

5 0
3 years ago
Form the intersection for the following sets.
xxTIMURxx [149]

Answer:

  • {20}

Step-by-step explanation:

<u>Given sets</u>

  • R = {10, 15, 20}
  • S = {20, 25}

<u>Intersection of sets</u>

  • R ∩ S = {20}
4 0
3 years ago
Which is greater 4/3 or 5/3
Amiraneli [1.4K]
5/3 is greater improper fraction comes out to 1 2/3
8 0
3 years ago
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12 1/2 gal= qt<br> can you help me plsssssss
Deffense [45]

Answer:

50 qrts

Step-by-step explanation:

12.5 gal = 4x qrts

12.5 * 4 = 50

7 0
3 years ago
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Find the percent increase. Round to the nearest percent.<br> From 17 friends to 19 friends
enyata [817]

I do believe it would be 12 percent, if rounded.

3 0
3 years ago
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