Mary has been saving her weekly allowance for the past 20 weeks. She started with $100 and now has $300. Which equation can be used to find the amount of money Mary receives for her weekly allowance?

Answers

Answer 1

Answer:

Step-by-step explanation:

You should set this up as an y = mx + b equation. Since 300 is her final number, that will be your y value. She started with 100, so that will be your b value. 20 is the number related to the variable you don't know so that will be your m.

300 = 20x + 100

-100            -100

200 = 20x

divide both sides by 20

10 = x


Related Questions

Bradley estimated the height of a tree at 2.5 meters. Carla estimated that tree's height at 8 feet.

How could a conversion ratio be used to compare Bradley's and Carla's estimates of the tree's height when measured in feet? (1 foot = 0.305 meters)

Answers

Answer: 4.1 feet : 4 feet

Step-by-step explanation:

From the question, we are informed that Bradley estimated the height of a tree at 2.5 meters. Carla estimated that tree's height at 8 feet.

The conversion ratio be used to compare Bradley's and Carla's estimates of the tree's height when measured in feet goes thus:

Since 1 feet = 0.305 meters

2.5 meters will be = 2.5/0.305 = 8.2 feet

Therefore the conversion ratio will be:.

= 8.2 : 8

Reducing to lowest term will be

= 4.1 feet : 4 feet.

= 4.1 : 4

i’m really bad at math word problems so yeah lol don’t make fun of me

Answers

Answer:

b

Step-by-step explanation:

B. She earns money and doesn't spend anything, according to the word problem, so it is B, officially meaning she has earned $5=$13

What is the dollar value of 10 pennies and 3 nickels? What is the dollar value of p
pennies and n nickels?

Answers

Answer:

25

Step-by-step explanation:

2 1/2 divided by 1 7/8
SHOW YOUR WORK and if you do i'll give you brainiest :)

Answers

Answer:

1.33

Step-by-step explanation:

2 1/2=2.5

1 7/8=1.87

=1.33

If y varies directly as x, and x = 13 when y = 6, what is y when x = 65?

Answers

Answer:

y=30

Step-by-step explanation:

15 L increased by 60% is how many litres

Answers

i think it is 24 because 60% of 15 L is 9 so 15+9 is 24
15 x .6 = 9
15 + 9 = 24
24 Liters

wrwhrowurhiuwirhirhiaruarhuaiwrhaihaiowawlrhwauilrhawuirhwauihruaiwhruawilhawuirawlirwairawriahrihawirhlairhawirahwulrihawuilrhawilr

Answers

Answer:

wrwhrowurhiuwirhirhiaruarhuaiwrhaihaiowawlrhwauilrhawuirhwauihruaiwhruawilhawuirawlirwairawriahrihawirhlairhawirahwulrihawuilrhawilr to you too. :)

Step-by-step explanation:

Answer:

wrwhrowurhiuwirhirhiaruarhuaiwrhaihaiowawlrhwauilrhawuirhwauihruaiwhruawilhawuirawlirwairawriahrihawirhlairhawirahwulrihawuilrhawilr

Step-by-step explanation:

wrwhrowurhiuwirhirhiaruarhuaiwrhaihaiowawlrhwauilrhawuirhwauihruaiwhruawilhawuirawlirwairawriahrihawirhlairhawirahwulrihawuilrhawilr

3 - (2x - 5) < -4 (x+2) can someone please help me get the answer i dont know how to get it

Answers

Answer:

x < -8

Step-by-step explanation:

3 - (2x - 5) < -4 (x+2)

distribute

3 - 2x + 5 < -4x - 8

add the numbers

8 - 2x < -4x - 8

move the x

2x < -16

divide

x < -8

For each problem, explain or show your reasoning, a. 160 is what percentage of 40? b. 40 is 160% of what number? c. What number is 40% of 1602​

Answers

Answer:

A. 160 Out of 40 is 400%./// B. The answer is 25/// C.  The answer is 3905%

Step-by-step explanation:

( A )  One step solution:

You can easily find the answer in one step, just multiplying the part by 100 then dividing the result by the percentage.

So, 160 is 40% of =  160 X 100     = 400

                                        40

                                             

( B ) The same thing as A but the numbers are switched

       One step solution:

You can easily find the answer in one step, just multiplying the part by 100 then dividing the result by the percentage.

So, 40 is 160% of = 40 × 100      = 25

                                          160

( C ) Working out a percentage increase or decrease between two numbers is pretty simple. The resulting number (the second input) is 1602 and what we need to do first is subtract the old number, 40, from it:

1602 - 40 = 1562

Once we've done that we need to divide the result, 1562, by the original number, 40. We do this because we need to compare the difference between the new number and the original:

1562      = 39.05          

40

We now have our answer in decimal format. How do we get this into percentage format? Multiply 39.05 by 100?

39.05 x 100 = 3905%

160 is percentage of 40,  40 is 160% , number is 40% of 1602​ are 64 , 64 and 640.8 respectively.

What is a percentage?

A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.

Problem A,

40% of 160 = 160 x 40 / 100

                  = 64

Problem B,

160% of 40 = 160 x 40 / 100

                  = 64

Problem C,

40% of 1602 = 1602 x 40 / 100

                     = 640.8

Therefore, 160 is percentage of 40,  40 is 160% , number is 40% of 1602​ are 64 , 64 and 640.8 respectively.

To learn more about the percentage;

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Using the table below, determine the unit rate in beats per minute.
minutes
beats
3
171
4
228
5
285

Answers

Answer: Where is the table?

Step-by-step explanation: i wish i could help but im afraid there isnt a table

How do i get her to love me:(

Answers

Ask her out, I know its scary but trust me. If you have a strong bond to your crush you will always have a place in her heart

Answer:

Show her her worth

Step-by-step explanation:

Make her feel special flowers and some candy is so Lame so take her someWhere do what she wants make her feel happy and loved

Find the value of x for which m || n.

Answers

Answer:

40

Step-by-step explanation:

The angles are equal to eachother so 4x-26 = 3x+14

40 it’s really easy just add 20+20 - 4 =

What is the equation in slope-intercept form of the line that passes through the points (−4, 2) and (12, 6)?

Answers

Answer:

y = 1x/4 +3

Step-by-step explanation:

M=1/4

Explanation: u just take the two points and plug them in the to the formula y2-y1/ x2-x1

Find the slope of the line that passes through (-3,4) and (-2,-8)

Answers

Answer:

-12

Step-by-step explanation:

The slope formula is y2-y1 divided by x2-x1

I plugged it in and got

-12

I hope this helps :>

Jack wants to buy a piggy bank at 6000 dollars . Black Friday is coming at November 6th and there are 80%of all goods how much will he now pay ?​

Answers

Jack will pay $1,200

Answer: 1,200 dollars

Step-by-step explanation:

We know that the cost before the discount is 6,000.

The discount price is 80% off.

So, subtract 4,800 by 6,000 because 80% of 6,000 is 4,800.

Now, we have to add the two zeros. We get 1200.

It is the answer to the question.

Anyone can help me with this problem

Answers

Answer:

R=50 degrees

Step-by-step explanation:

All of the angle measures together are 180 degrees. You need to make an equation in order to solve this problem:

180= (3x+5) + (11x-1) + (5x+5)

You then combine like terms:

180= (3x+11x+5x) + (5-1+5)

180= 19x+9

Then, subtract 9 from 180:

171= 19x

Then, divide 171 by 19:

9= x

Finally, you plug the value of x into the equation representing angle R:

5 x 9 + 5

45 + 5

50

Donna's company reimburses her expenses on food, lodging, and conveyance during business trips. The company pays $50 a day for food and lodging and $0.60 for each mile traveled. Donna drove 200 miles and was reimbursed $1,620. Part A: Create an equation that will determine the number of days on the trip. (3 points) Part B: Solve this equation justifying each step with an algebraic property of equality. (6 points) Part C: How many days did Donna spend on this trip? (1 point)

Answers

Answer:

See below

Step-by-step explanation:

Part A

Let number of days be d, then the equation is:

50d + 200*0.6 = 1620Part B

Solution of the equation

50d + 120 = 162050d + 120 - 120 = 1620 - 120   ⇒ subtraction property of equality50d = 150050d / 50 = 1500/50                ⇒ division property of equalityd = 30Part C30 days as above

How do u know that these two nunbers are oppisites

Answers

Answer:

cous of the negative or positive symbol

Step-by-step explanation:

help this is my last anmepent plz get help

Answers

Answer:

6 to the power of 10

Step-by-step explanation:

Since there are parenthesis, you multiply the exponents instead of adding. 5*2=10

What is the equation of the line through the origin and (3, 4)?
O A. y = 2
O B. y = x
O
C. y = 4x
O D. y = 3x

Answers

Answer:

A logarithm is the power to which a number must be raised in order to get some other number (see Section 3 of this Math Review for more about exponents). For example, the base ten logarithm of 100 is 2, because ten raised to the power of two is 100: log 100 = 2. because.

STep-by-step                                            Ihave a felling its b

i dont really get the second and third ones please help asap :/

Answers

Answer:

Step-by-step explanation:

1) y = 5x

x      y

2     10

3      15

7       5 * 7 = 35

1       5 * 1  =  5

2) a = 4b

a               b

12             3

20            5

4*10=40   10

1                 1/4

3) m = n + 2

m                n

5                  3

10                 8

20                18

1                    -1

what kinda math is this​

Answers

Shapeeee and graph and line

1.
Susan has five blocks of candy. She wantsstwo ciwe chook into -size pieces of
candy. How many pieces of candy willstrebe anettonale?

Answers

B) I can’t read this.
This is the weirdest thing I’ve ever seen

A map scale is 1cm: 50 km. Two cities are 3.8cm apart. How many kilometers is it
from one city to the other?
170 km
O 200 km
O 180 km
0 190 km

Answers

200 km sorry if I am wrong!

Can someone please help me with this proof?!

Given: AC and BD bis, each other.

Prove: ABCD is a parallelogram

Answers

Answer:

because AC and BD bis => AX = XC; BX = XD

ΔAXD ≅ ΔCXB (SAS) because: AX = CX

                                                    DX = BX

                                                    m∠AXD = m∠BXC ( 2 opposing angles)

because ΔAXD ≅ ΔCXB (SAS)

=> AD = BC and m∠DAX = m∠BCX

because m∠DAX = m∠BCX => AD//BC

ABCD has AD = BC and AD//BC => ABCD is a parallelogram

Step-by-step explanation:

Find the slope from the points given:
(18, -5), (18, 20)

Answers

Answer:

UNDEFINED

Step-by-step explanation:

change in y over the change in x is how you'd find slope, however, x is the same in both of these, making this a limitation not an equation, therefore the slope is undefined 18-18 = 0 -> Anything divided by zero as a slope is undefined.

30 pts for this one.... (only if you give a reasonable answer no BS)

Use the scenario below to answer questions 2 - 4

A Tech Software salesperson earns a base salary of $40,000 plus a commission of $3000 for every subscription to the software they sale.

2. Write an equation, in slope-intercept form, that shows the total amount of income the salesperson earns if he sells x subscriptions in a year.

3. What does the y-intercept of the equation represent in the context of the problem?
a) the base salary of the salesperson
b) the total salary of the salesperson per year
c) the amount of money the salesperson makes per software sale.
d) none of these

4. What does the slope of the equation represent in the context of the problem?
a) the commission per subscription
b) the total amount of money the salesperson makes
c) a one time, yearly commission for all the subscriptions
d) the base salary of the sales person


WANT A EXTRA 10 PTS?

comment on this and ill make another problem for 10 pts!

Answers

Answer:

y = 3000x + 40000a) the base salary of the salespersona) the commission per subscription

Step-by-step explanation:

Slope intercept form is found by [ y = mx + b ] where m = slope and b = y-intercept. We are given that a salesperson gets $40000 as a base salary. Since this value doesn't change it is the starting value, in other words the y-intercept. The salesperson also gets $3000 for every subscription they sell. Since this amount grows at a constant rate, that is the slope. Now, we can write the slope intercept form of [ y = 3000x + 40000 ].

Best of Luck!

Answer:

1. y = 3000x + 40000

2. Option A: base salary of the salesperson

3. Option A: the commission per subscription

Step-by-step explanation:

1. The commission of $3000 will be the first number, then will come the salary. Now, since it has to be in slope form, it is on the y-intercept, so we write y.

2. It is the base salary because it is the only number that does not have a missing value, 3000x does.

3. The commission per subscription is the answer because the context of the whole slope is the commission per subscription. Question 2 was the y-intercept.

PLEASE HELP ASAP The width of a rectangle measures (10h-4)(10h−4) centimeters, and its length measures (9h-8)(9h−8) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

Answers

Answer:

Here on the photo please

38h-24 is the expression represents the perimeter, in centimeters, of the rectangle

What is Area of Rectangle?

The area of Rectangle is length times of width.

The width of a rectangle measures (10h-4) centimeters

Length measures (9h-8) centimeters

The perimeter of rectangle=2(Length+Breadth)

=2(10h-4+9h-8)

Add the like terms in parenthesis

=2(19h-12)

Distribute 2 to the whole parenthesis

=38h-24

Hence, 38h-24 is the expression represents the perimeter, in centimeters, of the rectangle

To learn more on Rectangles click:

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which
among the following is a quadratic equation?
A. (x + 1 )² = x² – 1
B. (x + 1 ) (x – 2 ) = x – 3
C. x (x + 1 )²= 0
D. 2x² = 2 ( x – 1)²
​with explanation pls...

Answers

B.

Because when doing the math, letter B fits the criteria of a quadratic equation. Which is ax^2 + bx + c = 0.

A is wrong because if we were to do the math, there would be no ax^2. The most important thing in a quadratic equation is the term ax^2, bx and c do not matter as much.

C is wrong because there cannot be a greater exponent than ^2.

D is wrong because of the same reason as letter a.

Please NO clown answers need this in 27 minets

PLEASE HELP PLEASE HURRY NEED THIS IN 30 MINUTES
Use your solutions to develop a convincing argument for why the method
described in the chart is better than the traditional method.
You may wish to do research to find the average lifespan for each dog breed
and use those facts in your argument.

solutions:

Chihuahua (A)
(60 -2)/4 =A
English springer spaniel (B)
(60 -2)/5 =A
German shepherd (C)
(60 -2)/6 =A
Saint Bernard (D)
(60 -2)/ 7 =A

{A} (60 -2)/4 = 14.5
{B} (60 -2)/5 = 11.5
{C} (60 -2)/6 = 9.6….
{D} (60 -2)/ 7 = 8.2…

Answers

Answer:

1-  A.  3(10÷2) +2·7

2- A.  0.4

3- B.  -2.8

4- C.  n·6 - 12 = 60

Step-by-step explanation:

Heres the work in case teachers ask:

1. The given expression evaluates to ...

30÷2 + 2·7 = 15 + 14 = 29

A: 3(10÷2) + 2·7 = 3·5 + 2·7 = 15 + 14 = 29 . . . . . this will make it true

B: 30÷(6+2)·7 = (30/8)·7 = 210/8 = 26 1/4 . . . . . . ≠ 29

C: 3(10)÷(2+2)·7 = 30/4·7 = 210/4 = 52 1/2 . . . . . ≠ 29

D: (5+2)·7 = 7·7 = 49 . . . . . . . . . . . . . . . . . . . . . . . ≠ 29

2. You can divide the equation by 10 to find the appropriate value of x.

4/10 = 10x/10 = x . . . . . 4/10 matches choice A

3. The expression simplifies to ...

7.5 -10.3 = -2.8 . . . . . . matches choice B

4. "The product of a number and 6" is n×6. Twelve less is n×6 - 12. When that "is 60", the equation can be written ...

n×6 - 12 = 60 . . . . . . . . matches selection C

Hopefully this helped, if not HMU and I will try my best to get you a better answer!

Have a great day! :)

And if u need help with anything, HMU and I got you! -No points needed :)

Your answer is c i remember doing this from yesterday and i got the right answer i did that whole thing yesterday.

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