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Fed [463]
3 years ago
7

If 1 is the zero of polynomial p(x) x2a- 3xa+3x2-1 find the value of a

Mathematics
1 answer:
bonufazy [111]3 years ago
3 0

The value of a can be obtained by substituting 1 to the equation and equating p(1) = 0.

<span> p(x) = x2a - 3xa + 3x2 -1 </span>

<span>p(1) = a - 3a +3 -1 = 0</span>

<span>therefore a =1</span>

the equation now becomes p(x) = x2 - 3x + 3x2 -1

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Answer, will mark brainliest ^^ (worth 61 points)
Sergio [31]

Answer:

1) ven diagram #1

2)160

3) 420

4)16

Step-by-step explanation:

1) lets make a ratio table:

(look at image below, sorry for the horrible writing)

the original ratios are 18 and 17, and 18+17=35   35 is the number of students who play either or both sports. 30 is the number who play either sport:

so 35-30=5

5 students play both sports:

18-5=13(baseball)

17-5=12(basketball)

2) add up all the students who do band or sports and subtract from the total number of students

so

89/464+215/464= 304/464 students play in band or orchestra or both, to find the number of students who dont:

464-304=160

3) 630/1000+420/1000=1050/1000

1050/1000-210/1000=840/1000

840/1000-420/100=420/1000

420 ppl use brand p

4) 15+9=24

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hope this helps!

3 0
2 years ago
Read 2 more answers
Complete the equation that represents the total value of the nickels and p pennies
vovikov84 [41]

Answer:

<em>Answers below</em>

Step-by-step explanation:

<u>Equation</u>

Let's call:

p = number of pennies Janesa has in her pocket

n = number of nickels Janesa has in her pocket

She has 24 coins in total, thus:

p + n=24\qquad\qquad [1]

Since each penny is worth $0.01 and each nickel is worth $0.05, and Janesa has $1 in total:

0.01p+0.05n=1

Multiplying by 100:

p+5n=100\qquad\qquad [2]

A. Completing the equation:

5n+p=100

B.

From [1]:

p=24-n

Substituting into [2]:

24-n+5n=100

Simplifying:

24+4n=100

Rearranging:

4n=100-24=76

n=76 / 4= 19

p=24-19=5

B. There are 5 pennies in Janesa's pocket

C. Since each penny is worth $0.01, the total value of pennies is 5*$0.01=$0.05

The total value of the pennies is $0.05

D. The total value of the nickels is 19*$0.05 = $0.95

E. Jackson should say she has 19 nickels and 5 pennies

5 0
2 years ago
Read 2 more answers
Luce123
yaroslaw [1]
The answer is A because you have to use the process of substitution
5 0
3 years ago
There was a bag of counters. 45 were large! For every large counters 3/5 were small! The green was 300% than yellow, there were
madreJ [45]

Answer:

12 is the correct answer

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Lou deposited $3,500 into a savings account. The simple interest rate is 4%. How much interest will the account earn in 10 years
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Answer:

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Step-by-step explanation:

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