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Nadya [2.5K]
3 years ago
13

Help pleaseeeee! It’s urgent

Mathematics
1 answer:
PtichkaEL [24]3 years ago
5 0
The sales will be equal after 40 months.

In order to find this, use a system of equations where
s represents sales of scientific calculators
g represents sales of graphic calculators
x represents the number of months that have passed

s = 1500x + 10000
g = 1300x + 18000
s = g

1500x + 10000 = 1300x + 18000
Subtract 1300x and 10000 from both sides
200x = 8000
Divide each side by 200
x = 40

To graph this, use the expressions
f(x) = 1500x + 10000
g(x) = 1300x + 18000

where f(x) is scientific calculator sales and g(x) is graphic calculator sales


_____________________________________________________________
A more complex method would be to graph the following

f(x) = 1500x + 10000
g(x) = 1300x + 18000
and find the point where they intersect. The x-value of that point is your answer (in months) of how long it will take for sales to intersect.

f(x) is the sales of scientific calculators
g(x) is the sales of graphic calculators

x is the number of months that have passed
__________________________________________________________

Hope this helps

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A bag contains both black and red marbles. The ratio of black to red marbles is 3:4.
sesenic [268]

The total number of marbles in the bag is 7, since 3+4=7. There are 3:4 black marbles, so 3/7 of the bag is black marbles, which can be written as 3:7.

4/7 of the bag is red marbles, which can be written as 4:7

8 0
3 years ago
What is the slope and y-intercept of the graph? (write your answer in simplest form)
navik [9.2K]

Answer:

m = -3

y-intercept = 5

Step-by-step explanation:

You can use the rise/run approach on this graph. You start at the first point, which luckily, is the y-intercept (0, 5).

\frac{-3}{1}

You can count 3 units down (which gives you the -3) and then 1 unit right (which gives you the 1).

You can now reduce the fraction to -3.

3 0
3 years ago
Read 2 more answers
Plz help.
zvonat [6]
x-\ the price \ of \ the \ gift \ \\ \\ 10\% \ of \ x= \frac{10}{100}*x= \frac{1}{10}*x=\frac{x}{10}- the \ discount \\ \\x^{(10} -\frac{x}{10}= \frac{10x-x}{10}= \frac{9x}{10} -the \ new \ price \ \\ \\4*9.00 \$=36 \$ -the \ price \ after \ discount \\ \\ \frac{9x}{10}=36 =>x=\frac{10*36}{9} \\ \\ \boxed{x=40 \$}

the variant A.$40.00
5 0
3 years ago
The answer because I don’t knkw
Veseljchak [2.6K]

wssss

Step-by-step explanation:

ssss

3 0
3 years ago
Simplify. Can you explain it also?
Doss [256]

Answer:

The answer is

<h2>\frac{3c}{4e}</h2>

Step-by-step explanation:

<h3>\frac{9 {c}^{3}d {e}^{2}  }{12 {c}^{2} d {e}^{3} }</h3>

To solve the fraction reduce the fraction with d

That's we have

<h2>\frac{9 {c}^{3}  {e}^{2} }{12 {c}^{2} {e}^{3}  }</h2>

Next simplify the expression using the rules of indices to simplify the letters in the fraction

<u>For c </u>

Since they are dividing we subtract the exponents

We have

<h2>{c}^{3}  \div  {c}^{2}  =  {c}^{3 - 2}  = c^{1}  = c</h2>

<u>For </u><u>e</u>

<h2>e^{2}  \div  {e}^{3}  = e^{2 - 3}  =  {e}^{ - 1}  =  \frac{1}{e}</h2>

Substituting them into the expression we have

<h2>\frac{9c}{12e}</h2>

Reduce the fraction by 3

We have the final answer as

<h2>\frac{3c}{4e}</h2>

Hope this helps you

8 0
3 years ago
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