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
Sonbull [250]
2 years ago
10

Simplify the polynomial then evaluate for x=-1 3x^2-4+2x-1+x^2

Mathematics
1 answer:
yuradex [85]2 years ago
7 0

Answer:

-3

Step-by-step explanation:

Simplified polynomial: 4x^2 + 2x - 5

Plug in -1: 4(-1)^2 + 2(-1) - 5

= -3

You might be interested in
The nicotine content in a single cigarette of a particular brand has a distribution with mean 0.4 mg and standard deviation 0.1
a_sh-v [17]

Answer:

Step-by-step explanation:

For this case we can define the random variable of interest as: "The nicotine content in a single cigarette " and for this case we know the following parameters:

\mu = 0.4, \sigma = 0.1

And for this case we select a sample size of n =100 and we want to find the following probability:

P(\bar X

And for this case we can use the z score formula given by:

z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And replacing we got:

z= \frac{0.38-0.4}{\frac{0.1}{\sqrt{100}}}= -2

And we can find the required probability with the normal standard table and we got:

P(z

8 0
3 years ago
If the population of a certain city increased 25% in two years, the new population was what percent of the old?
disa [49]

Answer:

125%

Step-by-step explanation:

This because if in origin the city was made up for example by 100,000 people, that was the 100% of the city. Now you add the 25% in two years and the city will be made by 125,000 people. So <em>100%+25%=125%</em><em>.</em><em> </em>

I think it's right

7 0
4 years ago
WILL GIVE BRAINLIEST find the value of r (-4,8), (r,12), m=4/3 (show your work pls)
OLEGan [10]

Answer:

r = 13

Step-by-step explanation:

The first step is to find b from y=mx=b using m=4/3 and (-4,8)

8=\frac{4}{3}(-4)+b

After solving the equation, b will equal -16/3 making the final equation be

y=\frac{4}{3} x-\frac{16}{3}

Using the equation, you can solve for r.

12=\frac{4}{3} x-\frac{16}{3}

This will bring the answer being r = 13

7 0
3 years ago
What is the difference between the absolute value of 4 and the absolute value of –3?
Sergeeva-Olga [200]
1.
the absolute value of (-3) is 3
4 - 3
1
8 0
3 years ago
Read 2 more answers
If 2^x-4=4a^x-6 what is the value of a
Komok [63]
<span><span>a^<span>x−6</span></span>=<span><span><span>2<span>^x−4</span></span>/4........ hope this answer helps </span></span></span>
4 0
3 years ago
Other questions:
  • A chemist needs to obtain a 75% acid solution. How many Ounces of a 20% acid solution must be mixed with 20 ouncesof an 90% acid
    11·1 answer
  • In a survey music preferences
    7·2 answers
  • What fraction is bigger? 3/7 or 5/12. let me know the method.
    10·1 answer
  • What is the probability of choosing two kings?
    15·1 answer
  • Convert the decimal 0.92 to a fraction.<br>83/9<br>83/90<br>83/100<br>92/99​
    13·1 answer
  • What is the volume of a sphere with a surface area of 647 cm??
    12·2 answers
  • Help me please!!!!! Thanks if u did
    8·1 answer
  • Will path 1 intercept the crocidile river
    12·1 answer
  • Is (0,-2) the correct solution? True or False
    14·1 answer
  • A sample of 18 small bags of the same brand of candies was selected. Assume that the population distribution of bag weights is n
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!