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Helen [10]
3 years ago
8

Solve the equation 9b2 + 30b + 25 = 0.

Mathematics
1 answer:
jeka57 [31]3 years ago
5 0
Factor the equation into...
(3b+5)(3b+5)=0
Each factor 3b+5=0 so 3b=-5 so b=-5/3

Check:
9(-5/3)^2+30(-5/3)+25=
9(25/9)-50+25=
25-50+25=0
It checks,

So answer is A.-5/3
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Will Mark Brainliest
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Answer:

1st:Linear, 2nd:Non-Linear

Step-by-step explanation:

1st one is linear because you will add the same amount of money every day, so it's linear.But sometimes you will earn more or less in 2nd one, so that is non linear.

3 0
4 years ago
How would u do this? i needz helpz. plz helpz
castortr0y [4]
You have to add them all together and times that by 60%, when you get 13.8 that's the answer and to prove it, subtract 23-13.8 and you get 9.2 and that's 40%
3 0
3 years ago
A hang glider dropped his cell phone from a height of
elixir [45]

Answer:

It took the cell phone 4.15 seconds to reach the ground

Step-by-step explanation:

The formula is  t=\frac{\sqrt{h}}{4} , where t is the time and h is the height

The height of that the cell phone dropped from it is 275 feet above the ground

∴ h = 275

- Substitute the value of h in the formula to find t

∵ t=\frac{\sqrt{275}}{4}

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- Change it to decimal

∴ t = 4.15 seconds to the nearest 2 decimal places

It took the cell phone 4.15 seconds to reach the ground

5 0
4 years ago
Jill read 9 pages. Sam read 3 times as many pages as Jill. How many pages did both Jill and Sam read?
Nataly [62]

Answer:

Together, Jill and Sam read 36 pages.

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
All the Factors of x cubed minus 6x squared plus 11 minus 6
lutik1710 [3]

Answer:

Step-by-step explanation:

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Now factor the quadratic in the usual way.

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3 years ago
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