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KATRIN_1 [288]
3 years ago
15

If f(x) = 0.5(1 – x), what is the value of f(–1)? A. 0 B. 1 C. 2.5 D. 0.5

Mathematics
2 answers:
pogonyaev3 years ago
7 0

Answer:

f(-1)=1

Step-by-step explanation:

If f(x) = 0.5(1 - x), find the value of f(-1)

we are given with function f(x) = 0.5(1 - x)

To find f(-1) we plug in -1 for x in f(x)

f(x) = 0.5(1 - x)

f(-1) = 0.5(1 - (-1))

f(-1) = 0.5(1+1)

f(-1) = 0.5(2)

f(-1)=1

Slav-nsk [51]3 years ago
3 0
  <span>f(x) = 0.5(1 - x) 
f(-1) = 0.5(1 - (-1)) 
= 0.5(2) 
= 1 
answer B   

HOPE I AM THE BRAINLIEST I NEED IT </span>
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1/2 to exponent of 4
Neporo4naja [7]

Answer:

0.0625 is the answer.

Hope it helps you!!!

4 0
2 years ago
3. There are 124 acorns laying on the ground in your yard, it is predicted that the number of acorns will
Gennadij [26K]

Answer:

507,409

Step-by-step explanation:

if every 5 days the number quadruples (x4), and we want to know how many acorns fall after 30 days, we can divide 30 by 5 so we only have to calculate for the amount of time the take to quadruple.

30 ÷ 5 = 6

so we only have to quadruple the acorns 6 times.

if we start off with 124 acorns, this is what it will look like:

Day 0: 124 acorns

Day 5: 124 x 4 = 496 acorns

Day 10: 496 x 4 = 1984 acorns

Day 15: 1984 x 4 = 7936 acorns

etc... until day 30.

Day 30: 507904 acorns

I hope this was helpful :-)

5 0
3 years ago
A scuba diving company currently charges $100per dive. On average, there are 30 customers per day. The company performed a study
Semenov [28]

A. Total Revenue (R) is equal to price per dive (P) multiplied by number of customers (C). We can write R=PC.

Per price increase is $20. So four price increase is $20*4=$80. Hence, price per dive is 100+80=$180.

Also per price increase, 2 customers are reduced from 30. For 4 price increases, 4*2=8 customers are reduced. Hence, total customers is 30-8=22.

So Total Revenue is:

R=180*22=3960


B. Each price increase is 20. So x price increase is 20x. Hence, new price per dive would be equal to the sum of 100 and 20x.

Also per price increase, customers decrease by 2. So per x price increases, the customer decrease is 2x. Hence, new number of customers is the difference of 30 and 2x.

Therefor we can write the quadratic equation for total revenue as the new price times the new number of customers.

R=(100+2x)(30-2x)=-40x^{2}+400x+3000


C. We are looking for the point (x) at which the equation modeled in part (B) gives a maximum value of revenue (y). That x value is given as x=-\frac{b}{2a}, where a is the coefficient of x^{2} and b is the coefficient of x. So we have,

x=-\frac{b}{2a}=- \frac{400}{(2)(-40)}=5

That means, the greatest revenue is achieved after 5 price increases. Each price increase was 20, so 5 price increase would be 5*20=100. So the price that gives the greatest revenue is 100+100=200.

ANSWERS:

A. $3960

B. R=-40x^{2}+400x+3000

C. $200

4 0
3 years ago
Please answer!!!!! Im in the middle of this test and im not sure what the answer to this is!
Savatey [412]

Answer:

Increase of 8

Step-by-step explanation:

x = y-8

y=x+8

3 0
3 years ago
What is the point used in the equation of the line y+4=1/2(x-2)
Ket [755]

Answer:

What is the point used in the equation of the line y+4=1/2(x-2)

The other format for straight-line equations is called the "point-slope" form. For this one, they give you a point (x1, y1) and a slope m, and have you plug it into this formula:

y - y1 = m(x - x1)

Don't let the subscripts scare you. They are just intended to indicate the point they give you. You have the generic "x" and generic "y" that are always in your equation, and then you have the specific x and y from the point they gave you; the specific x and y are what is subscripted in the formula. Here's how you use the point-slope formula

They've given me m = 4, x1 = -1, and y1 = -6.  I'll plug these values into the point-slope form, and solve for "y=":

y - y1 = m(x - x1)

y - (-6) = (4)(x - (-1))

y + 6 = 4(x + 1)

y + 6 = 4x + 4

y = 4x + 4 - 6

y = 4x - 2 

8 0
3 years ago
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