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BartSMP [9]
3 years ago
10

Problem solving exercise 3d+d-7=25/4

Mathematics
1 answer:
Ad libitum [116K]3 years ago
3 0
First, 4d-7=25/4
Then,4d=53/4.
Then you cross multiply, to get 16d = 53. Your final answer is 53/16, or 3 5/16. 
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Find the value of k if (x-3) is a factor of P(x)=2x3-5x2+3x+k
blsea [12.9K]

Answer:

k = -18

Step-by-step explanation:

If x-3 is a factor, what this means is that if we substitute;

x = 3 into the equation, we should get 0

This is from the factor theorem

Thus ;

P(3) = 0 = 2(3)^3 -5(3)^2 + 3(3) + k

0 = 54 - 45 + 9 + k

k + 18 = 0

k = -18

4 0
3 years ago
For a dinner party, a catering company charges a set fee $150 plus $20 per person. How much will it cost for 35 people to attend
const2013 [10]

Answer:

$700 for 35 people but if you want to add the fee it will be $850

3 0
3 years ago
Employees at a clothing store recieve 20% discounts on what they purchase at that store. How much will an employer save on a $45
mamaluj [8]
Easiest way to work it out is to divide by ten, that gives 10% of your original number. Multiply that by two to get 20% and minus that from the original number to get the discount.
450/10 = 45 which is 10% of 450.
20% of 450= 10% x 2 or 45 x 2
therefor 20% of 450 is 90.
450-90 = the discount the shoppers recieve.

4 0
3 years ago
F(n)=45⋅(4/5)^n−1<br> complete the recursive formula of f(n)
Radda [10]

F(1) = 45

f(n) = f(n-1) * 4/5

Step-by-step explanation:

f(n) = 45 x (4/5)ⁿ⁻¹

f(1) = 45 x (4/5)¹⁻¹ = 45 x (4/5)⁰ = 45 x 1 = 45

f (n-1) = 45 x (4/5)ⁿ⁻¹⁻¹ = 45 x (4/5)ⁿ⁻²

f(n) = f(n-1) * (4/5)¹ = 45 x (4/5) ⁿ⁻²⁺¹ = 45 x (4/5)ⁿ⁻¹

7 0
3 years ago
This is taking forever to find out
frosja888 [35]

Answer:

What is

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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