Mathematics High School

Suppose that a phone that originally sold for $800 and loses 3/5 of its value each year after it is released.
1. After 1 year, what is the value of the phone?
2. After 2 years, what is the value of the phone?
3. Write an equation for the value of the phone, p, t years after it is released.

Answers

Answer 1

Answer:

1 st year = $320

2nd year $128

320p - 192t = $128

Step-by-step explanation:

Related Questions

PROVE ALGEBRAICALLY THAT 0.5 = 5/9

Answers

Answer:

See Below.

Step-by-step explanation:

Let:

[tex]0.\overline{5}=n[/tex]

If we multiply both sides by 10, we get:

[tex]5.\overline{5}=10n[/tex]

Now, we will subtract n from both sides:

[tex]5.\overline{5}-n=10n-n[/tex]

On the left, we can replace the n:

[tex]5.\overline{5}-.\overline{5}=10n-n[/tex]

Subtract:

[tex]5=9n[/tex]

Divide both sides by 9:

[tex]n=\frac{5}{9}[/tex]

Hence:

[tex]n=0.\overline{5}=\frac{5}{9}[/tex]

A t-shirt increased in price by
1
—
4
. After the increase it was priced at £20. What was the original price of the t-shirt? I will mark you the brainliest!

Answers

Answer:

5

Step-by-step explanation:

20×1/4=20/4=5

1/4×20/4=20/4=5

Select the graph that matches the function y = 3x + 7.

Answers

There’s no graphs attached

Show for y
3x + 2y = 6​

Answers

Step-by-step explanation:

3x + 2y = 6

-3x -3x

2y = 6 - 3x

/2 /2 /2

y = 3 - 1.5x

Do you want me to solve for y because that’s y=3- 3x/2

solve x²+5x+6=0 what is this answer

Answers

Answer (there are two solutions):

x = -3x = -2

I hope this helps!

Answer:

x=-2   x=-3

Step-by-step explanation:

x²+5x+6=0

Factor

What 2 numbers multiply to 6 and add to 5

2*3 =6

2+3 =6

(x+2)(x+3) =0

Using the zero product property

x+2 =0  x+3 =0

x=-2   x=-3

Find (g-)(x).
f(x)=1/x
g(x) = x^2+ 2x-5​

Answers

Answer:

C. x^2+ 2x-5​ - 1/x

Step-by-step explanation:

Givenf(x)=1/x g(x) = x^2+ 2x-5​To find(g-f)(x)Solution(g-f)(x) = g(x) - f(x) =x^2+ 2x-5​ - 1/x

Correct one is C

The State Fair charges $25 for admission and $1.25 for each ride. You go to the park
with a total of $40. How many rides are you able to ride?
A.12
B.13
C.14
D.15

Answers

Answer:

12 Rides

Step-by-step explanation:

After you pay $25 for admission you only have $15 left. If you multiply 1.25 × 12 you get 15.

Answer: A. 12

Step-by-step explanation:

40 - 24 = 15

15/1.25 = 12

Hope this helps :)

it takes Ryan 1/5 hour to bike home from school. his biking speed is 10 mph
how far apart are the school and his house

Answers

1/50? I can’t be sure....

Ok, so.. first you write both the problems down and write the 10 as a fraction (so it would automatically be 10/1). Then invert so it would be a multiplication problem (1/5 x 1/10). Since you can’t cross cancel, you multiply across. So, 1/5 x 1/10 (1 x 1 and 10 x 5)
1/50

Anybody know the slope to this?

Answers

the slope is -2. To find slopes you do rise/run between each point. In this it rose 2 and ran 1 and the direction of the line is negative.

Discuss the difference between fixed expenses and variable expenses as they relate to a budget

Answers

Answer:

Fixed expences are expences that don't change month-to-month, whereas variable expences are things that are needing to budgeted for every month, but may vary a bit and are therefor usually estimated on a budget.

Step-by-step explanation:

For example, rent would be a fixed expense because you know it will be X amount due on the same day every month.  Food, on the other hand, would be a variable expense because it likely won't be the same amount month-to-month.

Answer:

Fixed expenses are expenses that stay the same for a person or a business. An example of a fixed expense is rent/mortgage. This expense doesn't change if you are only using the building for 2 weeks or the entire month, it's a set rate. A variable expense is an expense that changes like an electric bill, it varies based on the month and usage. When you budget, you can easily budget for your fixed expenses but you need to allow some room in your budget for expenses that change.

5. Two sides of a right triangle are 8 inches and 12 inches. What is the length of the Hypotenuse​

Answers

Answer:

19.7ft

Step-by-step explanation:

o^2+a^2=h^2

\dpi{100} h^{2}=(10ft)^{2} +(17ft)^{2}

h^2=100ft^2+289ft^2

h=389ft^2−−−−−√

→19.7ft

Answer:

Step-by-step explanation:

a^2 + b^2 = c^2

where a and b are the legs of the triangle and c is the hypotenuse

so 8^2 + 12^2 = c^2

64 + 144 = c^2

208 = c^2

take the square root of both sides

c = 14.422

yxyxyxyxy simplified

Answers

Answer:

5y * 4x or 5y4x

Step-by-step explanation:

:)

...*PLZ HELP* This goes for ALL answers >...Given the following word problems, write an inequality that models the problem, then solve and check.

.1. 18 people are in a swimming pool. The maximum capacity for the swimming pool is at most 54 people. How many people can still enter the swimming pool?

.2. Rob earns $6 for each umbrella he sells. He wants to make at least $66. How many umbrellas does he need to sell?



.4. An amusement park needs more than 15 roller coaster rides working before they can open. Currently, 6 rides are working. How many more rides need to be working for the park to open?

.5. A basketball coach wants less than 54 players at the basketball camp. Currently, 42 players are registered for the camp. How many more players can register?

Answers

Answer:

See below

Step-by-step explanation:

1.

18 + x ≤ 54x ≤ 54 - 18x ≤ 3636 more people at most

2.

6x ≥ 66x ≥ 66/6x ≥ 11At least 11 umbrellas

4.

6 + x > 15x > 15 - 6x > 9More than 9 rides

5.

42 + x < 54x < 54 - 42x < 12Up to 12 more players

3(x-2)+2(4x-1) is my question plz answer quick

Answers

Answer:

11x - 8

General Formulas and Concepts:

Pre-Algebra

Distributive Properties

Algebra I

Combining Like Terms

Step-by-step explanation:

Step 1: Define expression

3(x - 2) + 2(4x - 1)

Step 2: Simplify

Distribute:                              3x - 6 + 8x - 2Combine like terms (x):         11x - 6 - 2Combine like terms (Z):         11x - 8

Write the equation of the line that goes through (2, 1) and is PARALLEL to 4x - 2y = 3 pls help asap! i have more questions like this also if someone could help me out

Answers

Answer:

Step-by-step explanation:

4x-2y=3

Get into y=mx+b

-4x on each side

Then divide by -2

y=2x- 1.5

Now if a line is parallel to another line the slope will be the same. If perpendicular the slope will be the negative reciprocal. As you said it is parallel the slope is 2.

y = mx+b

y = (slope)x + y-intercept

y= 2x + 1

Sorry if it is wrong but I hope it is right

plz answer quickly....​

Answers

Answer:

23 degrees

Step-by-step explanation:

angles subtended by a chord of the circle, on the same side of the chord ate equal

or

line segment joining 2 points subtends two equal angles

Chris is taking out a loan for $2500 with a simple interest rate of 7% for 36 months. How much interest will he have to pay at the end of the loan period? *

Answers

Chris will have to pay back $2,675. you do 2500x7%=175+2500

Carrie wants to conduct a randomized experiment on 50 articles of her dirty clothing to see if detergent A or detergent B cleans better. Which of the following best describes the method for randomization using slips of paper within this experiment?
A. Label each article of clothing with a number from 1 to 50, and write those numbers on identical slips of paper. Shuffle the slips of paper and choose 25 slips of paper to wash with detergent A and the remaining slips to wash with detergent B.
B. Label each article of clothing with a number from 1 to 50, and write those numbers on identical slips of paper. Shuffle the slips of paper and choose 25 of them. The numbers on those slips will represent the items that will be washed with detergent A and the remaining items will be washed with detergent B.
C. Label each article of clothing with a number from 1 to 50, and write those numbers on identical slips of paper. Carefully place the slips of paper in a stack and choose the top 25 slips of paper. The numbers on those slips will represent the items that will be washed with detergent A and the remaining items will be washed with detergent B.
D. Label each article of clothing with a number from 1 to 50, and write those numbers on different-sized slips of paper. Use large slips for pants, medium-sized slips for shirts, and small slips for shorts. Shuffle the slips of paper and choose 25 slips of paper. The numbers on those slips will represent the items that will be washed with detergent A and the remaining items will be washed with detergent B.
E. Label each article of clothing with a number from 1 to 50, and write those numbers on identical slips of paper. Shuffle the slips of paper and choose 25 of them. The numbers on those slips will represent the items that will be washed with detergent A. Replace those slips and shuffle all 50 slips again and choose 25 slips again. The numbers on those slips will represent the items that will be washed with detergent B.

Answers

Answer:

b

Step-by-step explanation:

Because if it has to be random then you wouldn't know what 25 numbers you were going to pull out.

the triangle is rotated 90° clockwise around the point (0,0) what will be the coordinates of the image of point L after rotation​

Answers

Answer:

help please i need helppppp

What season is it in the northern hemisphere?
A) spring
B) fall
C) summer
D) winter

Answers

Answer:

In the Northern Hemisphere right now it is Fall.

USE THE INFORMATION AT
THE RIGHT TO SORT THE
STATEMENTS AS EITHER TRUE
OR FALSE.
A local restaurant serves 8 entrees for every 5
desserts. Which combination of entrees and
desserts does the restaurant serve?
The restaurant could serve
40 trees and 26 deuters
The restaurant could servo
240 destorte and 150 entret
The restaurant could serve
24 entrees and 20 desserts
DRAG
THESE
The restaurant could serve
30 douters and 48 antros
The restaurant could serve
64 ontroos and 40 desterte
The restaurant could serve
98 antrees and 60 desterts.
PROPORTIONS AND PERCENTS
TRUE
FALSE

Answers

Answer:True

Step-by-step explanation:

Will the following list have a large or small Standard Deviation?
42, 1, 793, 20, 500, 1000, 127, 900, 382, 99
A. Large
B. Small
C. Not Enough Evidence Given

Answers

Answer:

large

Step-by-step explanation:

Answer:

A. Large

Step-by-step explanation:

Select True or False. (1 point) The expression 3x − 4(2x − 5) is equivalent to the expression 20 − 5x. True False

Answers

Answer:

yes

Step-by-step explanation:

because of the way this is put the result simplified would be 3x-8x-20

3-8=-5

so the answer is 20-5x

x=0.25 btw

- If the exterior angle of the triangle measure 133°, and its remote interior
angles measure x° and (2x-5)°, what is the value of x?

a. x = 61.7°
b. x = 133°
c. x = 47°
d. x = 46°

Answers

Answer:

D

Step-by-step explanation:

Mathematically;

the exterior angle is the sum of the two remote interior angles

Thus;

x + 2x-5 = 133

3x-5 = 133

3x = 133 + 5

3x = 138

x = 138/3

x = 46

use the line to approximate the rate of change for the parabola between x=1 and x=2

Answers

Answer:4

Step-by-step explanation:

Click the picture which is the correct answer?Make sure the answer is actually right really need help !

Answers

h = 2(A/a+b) is the correct formula

PLEASE HELP! IT'S DUE TODAY!

Answers

Answer:

25 ft

Step-by-step explanation:

5x = 10² ⇒ x = 20

h = 20 + 5 = 25 ft tall

3(x - 2) + 4(2x - 6) = 6(x - 4) + 8(2x + 1)

Answers

Answer:

x=-14/11 or -1.27 or -1 3/11

Step-by-step explanation:

Answer:

-14/11

Step-by-step explanation:

Simplify both sides of the equation

(Distribute)

(Combine Like Terms)

Subtract 22x from both sides.

Add 30 to both sides.

Divide both sides by -11

= -14/11

5x <10 what is the answer? Soo easy​

Answers

i think its x = 2 i think if im wrong sorry

Answer:

The answer is x<2

Step-by-step explanation:

First, divide both sides by 5

5x/5 < 10/5

x<10/5

x<2

I am so confused, I think that is D, xD​

Answers

Answer:

it is D.... PERIODT

Step-by-step explanation:

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