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Cerrena [4.2K]
3 years ago
14

Write an equation in point-slope form and slope - intercwpt form for passes through (1,9),slope =2

Mathematics
2 answers:
Vlada [557]3 years ago
8 0

slope-intercept form:

y = 2x + 7

Point-slope form:

y - 9 = 2( x - 1 )

I'm not 100% sure on the point slope form but try it for now.

GrogVix [38]3 years ago
4 0

point slope form

y-y1 = m(x-x1)

y-9 = 2(x-1)


change to slope intercept form

y-9 = 2(x-1)

distribute

y-9 = 2x-2

add 9 to each side

y = 2x-2+9

y = 2x+7

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Candy bars are sold in a local store for 60 cents each. The factory has 1000 in fixed costs plus 10 cents additional expense for
pochemuha

Answer:

2000 candy bars sold

$1200 in revenue

Step-by-step explanation:

Terms we need to know:

<u>Cost</u> "C": money needed/used to make the product (factory cost and candy bar expenses)

<u>Revenue</u> "R": money earned from selling the product (candy bars sold in a local store)

<u>Profit</u> "P": money left over after revenue is used to pay costs

<u>Break-even point</u> : when there is no profit (the profit is 0), what is the total revenue and number of items sold?

Create equations for the question:

State your variables.

let 'c' be the number of candy bars sold

R(c) = 0.6c                    Candy bars sell for 60 cents each

C(c) = 0.1c + 1000          10 cents expense per candy bar and factory cost

P(c) = 0          When profit is 0, we are looking to break even

Profit = Revenue - Cost

P(c) = R(c) - C(c)             Substitute the expressions above

P(c) = 0.6c - (0.1c + 1000)

Simplify this equation first. Use the rule for subtracting binomials, where you change the positive/negative for each number inside the brackets.

P(c) = 0.6c - (0.1c + 1000)    Positive in brackets, negative when taken out

P(c) = 0.6c - 0.1c - 1000             Combine like terms

P(c) = 0.5c - 1000            General equation for this problem

0 = 0.5c - 1000                 Remember profit should be 0

<u>Isolate "c"</u> to find how many candy bars made will result in the break-even point.

0 + 1000 = 0.5c - 1000 + 1000        Add 1000 to both sides

1000 = 0.5c

1000/0.5 = 0.5c/0.5             Divide both sides by 0.5

2000 = c          Answer

c = 2000       Variable on left side for standard formatting

Now to find the revenue at the break-even point.

Go back to the revenue equation for this question. Substitute when "c" is 2000.

R(c) = 0.6c

R(2000) = 0.6(2000)        Multiply

R(2000) = 1200              Revenue at break even point

Therefore the break-even point is when 2000 candy bars are sold, which would provide $1200 in revenue.

3 0
3 years ago
Write an exponential function in the form y = abthat goes through points (0, 20)<br> and (2,180).
Andrej [43]

Answer:

y=20(6)^x

Step-by-step explanation:

the graph passes through the point (0,20) : when x=0  and  y=20  :

20= ab^0    so a=20 because : b^0 = 1

the graph passes through the point (3,4320) : when x=3.  and  y=4320  : 4320= ab^3  but : a=20   so : 4320 = 20b^3

so : b^3 = 4320/20 = 216...... 216 =  6^3

b^3 = 6^3

b=6

the function is : y=20(6)^x

5 0
2 years ago
Express 0.4335 as a fraction
Leto [7]
0.4335 = 4335/10000
divide both numbers by 5

0.4335 = 867/2000
6 0
3 years ago
Jacob is the most popular name amongthe 2,086,814 males born in 2000. The Jacobs make up 1.6516% of all males born that year. Ho
lesya692 [45]

Answer:

34,466 children

Step-by-step explanation:

Given the following :

Total number of males born in year 2000= 2,086,814

Percentage number of Jacob's born in year 2000 = 1.6516%

The Jacobs make up 1.6516% of all males born that year?.

The number of Jacob's born in year 2000 will be :

1.6516% of the total number of children born in the year 2000

(1.6516 / 100) × 2,086,814

0.016516 × 2,086,814

= 34465.820024

= about 34,466 children

3 0
3 years ago
SV−→bisects ∠RST. If m∠RSV = 64, what is m∠RST?
Anuta_ua [19.1K]

Given:

\overrightarrow{SV} bisects ∠RST.

m\angle RSV=64^\circ

To find:

The m\angle RST.

Solution:

Since, \overrightarrow{SV} bisects ∠RST, therefore

m\angle RSV=m\angle VST         ...(1)

Now,

m\angle RST=m\angle RSV+m\angle VST

m\angle RST=m\angle RSV+m\angle RSV         [Using (1)]

m\angle RST=2\times m\angle RSV

m\angle RST=2\times 64^\circ              [\text{Given }m\angle RSV=64^\circ]

m\angle RST=128^\circ

Therefore, the value of m\angle RST is 128^\circ.

5 0
3 years ago
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