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VLD [36.1K]
3 years ago
12

Please solve : -9b(b+2)=0

Mathematics
1 answer:
Illusion [34]3 years ago
4 0

Answer:

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

−9b2−18b=0

Step 2: Factor left side of equation.

(−9b)(b+2)=0

Step 3: Set factors equal to 0.

−9b=0 or b+2=0

b=0 or b=−2

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Describe how to estimate the product of 396 and 71. Please :)
balu736 [363]
You can round 396 to 400 and 71 to 70. then you just multiply them and get 28,000. :))
4 0
2 years ago
Find the vertex I’d this parabola y=-2x^2-4x+4
mamaluj [8]

Answer:

  (-1, 6)

Step-by-step explanation:

A graphing calculator shows the vertex to be (x, y) = (-1, 6).

__

You can also find it by putting the equation into vertex form.

  y = -2(x^2 +2x) +4

  y = -2(x^2 +2x +1) +4 +2(1) . . . . . add 1 inside parens; the opposite outside

  y = -2(x +1)^2 +6

Compare to ...

  y = a(x -h)^2 +k

and you see a=-2, h=-1, k=6

The vertex is (h, k) = (-1, 6).

5 0
2 years ago
If y varies inversely as x, and y = 23 when x<br> 8, find y when x 4.
Virty [35]

Answer:

y = 46

Step-by-step explanation:

Given y varies inversely as x then the equation relating them is

y = \frac{k}{x} ← k is the constant of variation

To find k use the condition y = 23 when x = 8 , then

23 = \frac{k}{8} ( multiply both sides by 8 )

184 = k

y = \frac{184}{x} ← equation of variation

When x = 4 , then

y = \frac{184}{4} = 46

7 0
2 years ago
9x+14=2x+35 what is the answer to this I do not get it
son4ous [18]
9x+14=2x+35\\&#10;7x=21\\&#10;x=3
8 0
3 years ago
Read 2 more answers
7.5t = ? kg what is t here and also the answer of it​
Nataliya [291]

Answer:

7500 kg

Step-by-step explanation:

t = tonnes

\because \: 1 \: t = 1000 \: kg \\  \therefore \: 7.5 \: t = 7.5 \times 1000 = 7500 \: kg

5 0
3 years ago
Read 2 more answers
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