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Anna11 [10]
2 years ago
14

What do you get when you subtract 9 from b??​

Mathematics
2 answers:
ivanzaharov [21]2 years ago
5 0
You have to find the sum of b first!! Then I can help!!
Citrus2011 [14]2 years ago
3 0
You cannot subtract a number from a unknown. You’d simply put (9-b) in its place.
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Bill is 2 years older than his brother Will. If the product of their ages is one less than five times the sum of their ages, how
Advocard [28]

Answer:

Will's age = 9 years

Bill's age = 11years

Step-by-step explanation:

Let will age = x

Bill = x +2 since he is 2 years older

x(x+2) = 5( x +x+2) - 1

Opening brackets

x² + 2x = 5(2x + 2) - 1

x² + 2x = 10x + 10 - 1

x² + 2x = 10x + 9

Collect like terms

x² + 2x - 10x - 9 = 0

x² - 8x - 9 = 0

Solve quadratically using factorisation method by finding two factors of +9 that can add up to give -8, the coefficient of x.

The factors are -9 and +1

x² + x - 9x - 9 = 0

x(x + 1) -9( x +1)

x+1) (x -9) =0

x + 1 = 0 or x -9 =0

x = -1 or 9

Age can not be negative

Therefore,

Will's age = 9 years

Bill's age = x+2 = 9+2 = 11years

I hope this was helpful, please rate as brainliest

6 0
2 years ago
$21 is what percent of $28
saveliy_v [14]

Answer:

75%

Step-by-step explanation:


4 0
2 years ago
WILL MARK BRAINLIEST AND 23 POINTS
Lubov Fominskaja [6]
The surface area, I believe, is 584,064.

Broken down, the formula is really 312 x 312 x 6

312 x 312 = 97,344     97,344 x 6 = 584,064......... There is your answer.

SA = 584,064
8 0
3 years ago
How do i graph <br> y=-3/4x-1
Tasya [4]

Answer:

Start at -1 and go down 3 right 4,repeat. Then up 3 left 4 from -1, repeat.

Step-by-step explanation:

6 0
2 years ago
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If a flat screen television is a rectangle with a 53 inch diagonal and a width of 45 inches, what is the height of the screen.
Leto [7]

Answer:

Length= 28 inches

Step-by-step explanation:

Hope it helps!!!!

8 0
2 years ago
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