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Andrei [34K]
4 years ago
14

Help please. I dont understand it..so I cant explain it

Mathematics
1 answer:
Ann [662]4 years ago
8 0
A)
x^2 - 6x + c = - 5 + c

using a^2 - 2ab + b^2 = (a-b)^2
so
6x = 2 * x * 3
so
c = 9 

Answer
c = 9

b)
substitute c = 9
x^2 - 6x +  9 = - 5 + 9
(x - 3)^2 = 4

Answer:
(x - 3)^2 = 4

c) solve for x

(x - 3)^2 = 4
(x - 3)^2 = 2^2
so
x - 3 = 2  
     x = 5

and

x - 3 = -2
     x = 1

Answer: x = 1 , 3


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2x+3y=-3 covert to y=mx+b
amid [387]

2x+3y=-3\ \ \ \ |-2x\\\\3y=-2x-3\ \ \ \ |:3\\\\y=-\dfrac{2}{3}x-1

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5 0
3 years ago
Read 2 more answers
PLEAE help with this
ratelena [41]

Answer:

x = 67°

Step-by-step explanation:

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5 0
3 years ago
Help me in this plz....
solniwko [45]

Answer:

70. 8x⁴

71. 3n - 10

72. a/5 + 12

Step-by-step explanation:

70. a number "x" raised to the fourth = x⁴

Product of 8 and x⁴ = 8 × x⁴

= 8x⁴

71. 3 times a number "n" = 3 × n = 3n

3n decreased by 10 = 3n - 10

72. Quotient of a number "a" and 5 = a/5

12 more than a/5 = a/5 + 12

3 0
3 years ago
Write and solve an equation to find the number n.
azamat

Answer:

2.5n=10 n = 4

Step-by-step explanation:

sum is addition

twice n and a half is 2.5n

equals 10

10 divided by 2.5=4

7 0
3 years ago
what is the area of the combined rectangle below? 20yd would be the base, 12yd would be the base, 5yd would be the height, 3yd w
e-lub [12.9K]
Since the area of a rectangle is base times height.
Combining the two areas, we get
A(total) = A1 + A2 = (20*5) + (12*3) = 136 square yard

The answer is A.
8 0
3 years ago
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