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Nataly_w [17]
3 years ago
8

Identify the sequence graphed below and the average rate of change from n = 1 to n = 3

Mathematics
1 answer:
Finger [1]3 years ago
7 0
Answer: Choice A

----------------------------------

The first term is 8 as this is the y coordinate of the point when x = 1. 
The second term is 4 (since y = 4 when x = 2)
etc etc

The sequence of terms is: 8, 4, 2, 1, ...

Each time we're dividing by 2, or multiplying by 1/2. This is why r = 1/2

Put this together and we have this geometric nth term formula
an = 8*(1/2)^(n-1)

This means the answer could be A or it could be C. However, we can rule out choice C because the rate of change is not positive. Draw a line through (1,8) and (3,2) and you'll see this line has a negative slope. So the rate of change is negative.

The only answer left is choice A.
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If y varies directly with x, the constant of variation is . The equation representing this relationship is . What is the value o
Julli [10]

Answer:

Y~x

Y = k × v

Y = 22

Step-by-step explanation:

Y~ x

Y = k × X

Since the question isn't complete,we are going to assign figures to complete this very question and move on to other things and you can as well solve questions that are similar to this ones.

Now let's assume that the question says that is 6 when x is 3,what is y when x is 11.

To solve this question above,we need to find the constant of variation which will then enable us to know what y is when x is 11

Y~ x

Y = k × V

When y is 6 and x is 3,k will be

6 = 3k

K= 2

Now when k is 2,x is 11,y Will then be

Y = kx

Y = 2 × 11

Y = 22.

With this procedure,one can find any value of x or y when they have the constant of variation.

If you have a figure assigned to x and y is to be found,the constant of variation will help to get y and vice versa

8 0
3 years ago
Answer part A, B and part C correctly please.
Radda [10]

Answer:

Part A:

    C= cash Sue earns

    H = hours Sue works

C is dependent upon H because C only changes when H is changed.

Part B:

(0,0)

(1,6)

Part C:

C=6H

7 0
3 years ago
Read 2 more answers
The price of a pizza plus 12% delivery charge comes to a total cost of $17.92. What was the price of the pizza?
Leya [2.2K]

Answer:

i believe the answer is 14.93 dollars.

Step-by-step explanation:

3 0
3 years ago
Corn costs 99 cents per pound, and beans cost 45 cents per pound. If Shea buys 24 total pounds of corn and beans, and it costs $
viva [34]
Shea bought 13.5 pounds of corn

c = pounds of corn
b = pounds of beans

Here’s what we know:
c(0.99) + b(0.45) = 18.09
c + b = 24

Solve the second equation for c in terms of b

c = 24-b

Substitute that expression for c in our first equation to get a numerical solution for b:

0.99 (24-b) + 0.45b = 18.09
23.76 - 0.99b + 0.45b = 18.09
-0.54b = -5.67
b = 10.5

Substitute that value to get a numerical value for c:

c = 24 - b
c = 24 - 10.5
c = 13.5

Check the math:

0.99(13.5) + 0.45(10.5) =
13.365 + 4.725 = 18.09
4 0
3 years ago
Please answer this question
Gelneren [198K]
A=2(LW+LH+WH)

A=2((7/8)(1/3)+(7/8)(2/5)+(1/3)(2/5))

A=2(7/24+14/40+2/15)

A=14/24+28/40+4/15

A=7/14+7/10+4/15  210

A=(105+147+56)/210

A=308/210

A=(210+98)/210

A=1 98/210

A=1 7/15
8 0
3 years ago
Read 2 more answers
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