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grandymaker [24]
3 years ago
15

PLZ PLZ HELP!!!!! WILL MARK BRAINLIEST!

Mathematics
1 answer:
Pepsi [2]3 years ago
3 0

Answer: team A i think..

Step-by-step explanation: because there r more dots on the higher places on A.. sorry if this didnt help

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If a₀ , a₁ , a₂ , a₃ , are all positive , then 4a₀x³ + 3a₁x² + 2a₂x + a₃ = 0 has at least one root in (-1,0) if
artcher [175]
If f(x)=4a_0x^3+3a_1x^2+2a_2x+a_3, then you have

f(-1)=-4a_0+3a_1-2a_2+a_3
f(0)=a_3

By the intermediate value theorem, there will be some number -1 such that f(c)=0 (i.e. f(x) will have a root in (-1,0)) if you can guarantee that f(-1) or f(-1)>f(c)>f(0).

Since the coefficients a_i are all positive, then you know right away that f(0)>0, so you need to have f(-1) in order for there to be such a c.

This means you need to have

-4a_0+3a_1-2a_2+a_33a_1+a_3

which means (A) must be the answer.
7 0
2 years ago
Please help!!!<br><br> This is my measurement homework
tatyana61 [14]
10) 4 1/2 inches thick. You would add them together and simplify 2/4 into 1/2.

11) Yes. He needed a stick that was about 5 feet long. It is only a little longer and he could easily make it shorter.
7 0
3 years ago
Solve the inequality |x| &lt; 5. {x|-5 &lt; x &lt; 5} {x|x &lt; -5 ∪ x &gt; 5} {x|x -5 ∪ x &lt; 5}
sesenic [268]

ANSWER

The correct answer is A

{x|-5}


<u>EXPLANATION</u>

|x|


This implies that

x


We solve the compound inequality to obtain,


x-5

Remember that, dividing through by negative 1 reverses the inequality sign

The solution set is

{x|-5}


8 0
3 years ago
A survey is taken among customers of a fast-food restaurant to determine preference for hamburger or chicken. Of 200 respondents
kicyunya [14]

Answer:

                          Hamburger       Chicken

Adults                    65                        60         125

children                 55                        20          75

                             120                        80         200

a)What is the probability that a randomly selected individual is an adult?

Total no. of adults = 125

Total no. of people  200

The probability that a randomly selected individual is an adult = \frac{125}{200}=0.625

b) What is the probability that a randomly selected individual is a child and prefers chicken?

No. of child prefers chicken = 20

The probability that a randomly selected individual is a child and prefers chicken= \frac{20}{200}=0.1

c)Given the person is a child, what is the probability that this child prefers a hamburger?

No. of children prefer hamburger = 55

No. of child = 75

The probability that this child prefers a hamburger= \frac{35}{75}=0.46

d) Assume we know that a person has ordered chicken, what is the probability that this individual is an adult?

No. of adults prefer chicken = 60

No. of total people like chicken = 80

A person has ordered chicken, the probability that this individual is an adult= \frac{60}{80}=0.75

3 0
2 years ago
Write 31 5 as a mixed number.
vaieri [72.5K]

Answer:

6 1/5

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
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