1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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
You might be interested in
What kind of transformation converts the graph of f(x) = 10x + 71 - 2 into the graph of
Over [174]

Answer:

A transition down six units

Step-by-step explanation:

-2-6=-8

8 0
3 years ago
Plz help me I am begging!!
Mashcka [7]

Week 4

you can see that the dots are the closest

3 0
3 years ago
If you have 49 questions on a test what score must you get to pass the test?​
arsen [322]

Well, on every test I have at a school and I believe most schools do this. You need at leasr 80% to pass. But to pass you'd most likely need 80% or 70%. But if you get an 80% you'll be sure to pass! I hope this helps you!

7 0
3 years ago
What is the probability of flipping exactly 6 heads when you flip 6 coins? Please explain your answer and those who waste an ans
kolbaska11 [484]

Binomial probability states that the probability of x successes on n repeated trials in an experiment which has two possible outcomes can be obtained by

(nCx).(p^x)⋅((1−p)^(n−x))

Where success on an individual trial is represented by p.

In the given question, obtaining heads in a trial is the success whose probability is 1/2.

Probability of 6 heads with 6 trials = (6C6).((1/2)^6).((1/2)^(6–6))

= 1/(2^6)

= 1/64

6 0
3 years ago
How u can convert decimal to a fraction in .23?
Vlada [557]

23

%

=

23

100

=

0.23

First we have to think that the symbol

%

=

1

100

so that

23

%

=

23

⋅

(

1

100

)

this is read twenty three percent is equal to twenty three multiplied by one divided by one hundred.

the result is the fraction

23

100

Now, to convert to decimal, simply divide 23 by 100

23

÷

10

=

2.3


and

2.3

÷

10

=

0.23

this is the same as

23

÷

100

=

0.23

4 0
3 years ago
Other questions:
  • Some scientists say, happiness, when measured on a scale of 0 (super unhappy) to 100 (super happy), is a function of the number
    7·1 answer
  • Which arc is a minor arc?
    12·1 answer
  • Can you please help me with 3b.
    8·1 answer
  • PLeASe pLEaSE HELp ......will mark brainliest!!
    9·1 answer
  • the radius of a sheridan balloon is increasing at a rate of 3 centimeters per minute. how fast is the volume changing when the r
    14·1 answer
  • Pls help will mark brainliest
    5·1 answer
  • Please help! 20 points
    11·2 answers
  • The basketball team won 12 of their 15 games this year. What percent
    5·1 answer
  • Ashlee is placing a rug in the middle of her bedroom. The length of the rug is two feet more than the width.
    11·1 answer
  • Two candidates ran for class president. The candidate that won received 80% of the 250 total votes. How many votes did the winni
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!