Question
Solve the system of linear equations by substitution.

y=2x+5
y=3x−1

analyze picture

com loses 1/4 of its value after every year it is purchased

v = original price times 1/4 x times(x represents)

v = 800*(3/4)^x

so, if x is five, then t is

800*(3/4)^5= 189 27/32

Answer:

[tex]v=800(0.75)^t[/tex]

$189.84 (nearest cent)

Step-by-step explanation:

If a computer loses 1/4 of its value each year, then each year it will be 75% of the value of the previous year, since 100% - 25% = 75%.  

Therefore, we need to model this as an exponential function.

General form of an exponential function: [tex]y=ab^x[/tex]

where:

From the given information:

Substituting the values into the formula:

[tex]\implies v=800(0.75)^t[/tex]

When x = 5, t = 5

[tex]\implies v=800(0.75)^5=189.84375[/tex]

⇒ v = $189.84 (nearest cent)

Step-by-step explanation:

y = 16x²

you put the x values one after the other in place of x and do the calculations.

x = -4

y = 16×(-4)² = 16×16 = 256

x = -3

y = 16×(-3)² = 16×9 = 144

x = -2.5

y = 16×(-2.5)² = 16×6.25 = 100

x = -2

y = 16×(-2)² = 16×4 = 64

x = -1.5

y = 16×(-1.5)² = 16×2.25 = 36

x = -1

y = 16×(-1)² = 16×1 = 16

x = -0.5

y = 16×(-0.5)² = 16×0.25 = 4

x = 0

y = 16×0² = 16×0 = 0

x = 0.5

y = 16×0.5² = 16×0.25 = 4

x = 1

y = 16×1² = 16×1 = 16

and so on.

36, 64, 100, 144, 256

as you can see, the y values are the same for the positive and the negative values.

because squaring a negative number is the same as squaring the same positive number. that is, because (if you remember) squaring something means to multiply that something with itself. and minus multiplied by minus is plus, as plus multiplied by plus is plus.

and that creates the symmetry around the y-axis or x = 0. everything left of the y-axis is mirrored on the right side of the y-axis (and vice versa).

Answer:

140

Step-by-step explanation:

This gives you the information that each equal group has 28 animals. Only one group is all horses, so a simple method in this problem in to simply subtract 28 from 168. Always check. Answer: 140 cows.

Answer:

i cant quite see the questin can you like take a closer picture

Answer:

2 tablespoons of vinegar are needed for every tablespoon of oil

Answer:

fred had 58 marbles

Step-by-step explanation:

peter= x marbles

Fred= x²-6

together= 66 marbles

(x²-6) +x=66

x=8

Fred had 58 marbles

Answer:

20

Step-by-step explanation:

3x+50 = 6x-10( opposite angles are equal)

3x = 60

x = 20

Answer:

6 = 6, 12, 18, 24, 30, 36, 42, 48, 54, 60

8 = 8, 16, 24, 32, 40, 48, 56, 64, 72, 80

Step-by-step explanation:

Answer:

The cost for each television costs $60

Step-by-step explanation:

30*18 = 540

1620 - 540 = 1080

1080 / 18 = 60

Answer:

I might not be able to solve it correctly but this might help a lot. Formula: V = πr 2 h

Step-by-step explanation:

Answer:

Perimeter is 9x² + 15x + 36

Step-by-step explanation:

[tex]{ \tt{perimeter = s \times s \times s}} \\ { \tt{p = 3s}}[/tex]

[tex]{ \tt{p = 3(3 {x}^{2} + 5x + 12) }} \\ { \boxed{ \tt{ \blue{p = 9 {x}^{2} + 15x + 36 \: }}}}[/tex]

Using exponential function concepts, it is found that it represents a decay of 0.9%.

A decaying exponential function is modeled by:

[tex]A(t) = A(0)(1 - r)^t[/tex]

In which:

In this problem, the function is:

[tex]A(t) = 9300(0.991)^{6t}[/tex]

Hence:

[tex]1 - r = 0.991[/tex]

[tex]r = 0.009[/tex]

Thus, it represents a decay of 0.9%.

You can learn more about exponential function concepts at https://brainly.com/question/25537936

Answer:

11

Step-by-step explanation:

if the average of 6 number is 6, then the sum of those 6 numbers = 6 x 6 = 36

Therefore, the 6th number is:  36 - 25 = 11

Answer:

it is angles x and p because of you rotate triangle wzx around you can see that angle x corresponds with angle p

Answer:

50 players

Step-by-step explanation:

Let x be the amount of players last year and y be the amount of players this year then...

y=3x+2

y=152

We can solve this using substitution. Substitute 152 for y:

y=3x+2

152=3x+2

Subtract 2 from both sides (subtraction property of equality)

152-2=3x+2-2

150=3x

Divide both sides by 3 (division property of equality)

x=50

There were 50 players last year.

[tex]\qquad \qquad \textit{inverse proportional variation}\\\\\textit{\underline{y} varies inversely with \underline{x}}~\hspace{6em} \stackrel{\textit{constant of variation}}{y=\cfrac{\stackrel{\downarrow }{k}}{x}~\hfill }\\\\\textit{\underline{x} varies inversely with }\underline{z^5}~\hspace{5.5em} \stackrel{\textit{constant of variation}}{x=\cfrac{\stackrel{\downarrow }{k}}{z^5}~\hfill }\\\\[-0.35em]\rule{34em}{0.25pt}[/tex]

[tex]\stackrel{\textit{\underline{y} varies inversely with \underline{x}}}{y=\cfrac{k}{x}}\qquad \textit{we also know that} \begin{cases} x=6\\ y=10 \end{cases}\implies 10=\cfrac{k}{6} \\\\\\ 60=k\qquad therefore\qquad \boxed{y=\cfrac{60}{x}} \\\\\\ \textit{when x = 8, what is "y"?}\qquad y=\cfrac{60}{8}\implies y=\cfrac{15}{2}[/tex]

Answer:

28.75

Step-by-step explanation:

Answer:

base times height

Step-by-step explanation:

Lets say its a cube with a length of 6, a width of 6, and a height of 6. I would find the base first by multiplying the width times length, which you probably know how to do.  The base would be 36, then I would multiply it by the height which is six which would be 216.

Answer:

3

Step-by-step explanation:

3 is not a factor of 16.

Is that a valid answer? lol

Hi there!

First of all, let's determine the factors of 16.

Remember, a factor is a number that a number can be evenly divided by.

Example: 5 is a factor of 10, because 10 can be evenly divided by 5.

So, the factors of 16 are:

1, 2, 4, 8, and 16.

Now, there's an infinite amount of numbers that are not factors of 16. Here are some of them:

3, 5,7,9, 10,11, 12, 13, 14, 15...

Hope it helps.

Feel free to ask if you have any doubts.

[tex]\bf{-MistySparkles^**^*[/tex]

You can use the circumference of the circle that the blade makes to calculate the linear velocity at the end of the blade.

The linear velocity at the end of the blade is 13571.7 inches per minute

You can think of it as if some circle is being drawn by the end of the blade and then that circle is like wheel of a bicycle and its travelling on road. Each rotation will make it cover distance equal to its circumference. Since there are 60 revolutions of the blade in each minute, thus, 60 rounds of that wheel.

The total distance in 1 minute = 60 times circumference of the circle made by the end of the blade of the lawnmower.

Since the blade is 36 inches long, it can be taken as radius of that circle.

The circumference is thus calculated as [tex]2 \times \pi \times 36 = 226.19 \: \rm inches[/tex]

Thus, linear velocity = 226.19 times 60 inches per minute = 13571.7 inches per minute

Thus,

The linear velocity at the end of the blade is 13571.7 inches per minute

Learn more about linear velocity here:

https://brainly.com/question/20410914

Answer:

i think its D or 4,320pi

Step-by-step explanation:

just divided the previous persons answer by pi and its d on edge 2022.

Answer: Amount of sugar 2 cups, amount of flour 3 cups, this means that for every cup of flour you will need 2/3 of cup of sugar

Step-by-step explanation:

Answer:

176.625 sq.ft, 4.8 sq.ft

Step-by-step explanation:

Area of circle=πr^2 or πd^2/4
11. Given,
d=15 ft
Now,
Area=πd^2/4
3.14*15^2/4
176.625 ft^2
Therefore, the area approximation is 176.6 sq.ft
12.
Given,
d=3.5 ft
Now,
Area= πd^2/8
3.14*3.5^2/8
4.8 sq.ft
I got the answer by dividing the area of circle by 2 as semicircle is half of circle.

Answer: 4xy+6x+2x^2

Step-by-step explanation:

4xy-2x+2x^2+8x

we can combine the terms that only have an x (Ax for any number A)

in this case that's -2x and 8x

-2x+8x=6x

the other things can't be combined

thus you end up with

4xy+6x+2x^2

Answer:

Each payment will be $118.75

Step-by-step explanation:

Since Diego put $2000 down, he is left with $2,850 that needs to be payed equally in 24 payment. Divide 2850 by 24 and you get 118.75.

Answer:

360

Step-by-step explanation:

270 = 75% of x

270 = 0.75 × x

0.75x = 270

x = 270/0.75

x = 360

Answer: 360

Answer:

360

Step-by-step explanation:

We have, 75% × x = 270

or, 75/100 × x = 270

Multiplying both sides by 100 and dividing both sides by 75,

we have x = 270 × 100/75x = 360

If you are using a calculator, simply enter 270×100÷75, which will give you the answer.

Reduced by 20% due to the fact that $40 dollars was removed which is 20% of 200.
How to find: 40/200x100
Hopefully this helps you

Answer: C.

Step-by-step explanation:

Answer:

4378

Step-by-step explanation: