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ch4aika [34]
2 years ago
7

Please help I am very confused!

Mathematics
1 answer:
Ad libitum [116K]2 years ago
7 0

Answer:

pls add me as a friend pls

Step-by-step explanation:

You might be interested in
(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
I just need the answer to 5c - 3 (a + 3a)<br>​
alexandr1967 [171]

Answer:

5c - 3 (4a)

Step-by-step explanation:

If you're just grouping and adding them together you would get 5c - 3 (4a).

3 0
3 years ago
Read 2 more answers
Can y’all help me w/ 9-14?
Alexxx [7]

Answer:

9. yes

10. no

11. no

12. no

13. yes

14. no

6 0
3 years ago
What is the value of 1/2 x3 + 3.4y when x = 2 and y = 5<br> The X3 The 3 in that is Over X
finlep [7]
1/2 x3 + 3.4y
1/2 3(2) + 3.4(5)
1/2 3X2 + 3.4X5
1/2 6 + 8.4
1/2 14.4
0.5 + 14.4
14.9


I think this is the answer. I might be wrong!
Have a great day! :D
5 0
3 years ago
Eight decreased by three times the sum of a number and six<br><br> Write as an algebraic expression
Advocard [28]
8-3(x+6)

explanation:

it just makes sense lol but also bc “8 decreased by three” means “8 minus 3”

then “times” means “multiply”

then “a sum” means “addition”

then “a number” since we don’t know what a number is then we use “x”

“and” means “addition”

“a number and six” means “x+6”
3 0
3 years ago
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