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sineoko [7]
3 years ago
12

Please help, due tomorrow. will give brainlist if correct.

Mathematics
1 answer:
Vinil7 [7]3 years ago
8 0

Answer:

<h2>k=9</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • factor theorem
  • function
  • PEMDAS
<h3>tips and formulas:</h3>
  • When f(c)=0 then x−c is a factor of f(x)
<h3>let's solve:</h3>

according to the question

2( - 1)^3+7( - 1)+k = 0

2. - 1  - 7 + k = 0

- 2 - 7 + k = 0

- 9 + k = 0

k = 9

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Read 2 more answers
An athletics club has junior
Brums [2.3K]

Answer:

The total number of members are 128 members

Step-by-step explanation:

From the question, mixing the ratio of children to adult, we have ;

7:9

There are 16 more adult members

So if there are x children, then there are 16 + x adults

Thus, the total number of members will be;

16 + x + x = 2x + 16

Now, we have that;

7/16 * (2x + 16) = x

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6 0
3 years ago
mat deposited $2,000.00 in the bank. if the rate of simple interest was 10%, what was the amount of money mat had in the bank af
Mekhanik [1.2K]
Principal amount of money deposited by Mat in the bank = $2000
Rate of simple interest given by the bank = 10%
Number of years for which the money is kept in the bank = 5 years
As no money was withdrawn from the account, so
Amount after 5 years = Principal [1 + (Rate * Time)]
                                  = 2000 [ 1 + (10/100) * 5]
                                  = 2000 [ 1 + (1/2)]
                                 = 2000 * (3/2)
                                 = 1000 * 3
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