Jessica sold half of her comic books and then bought 7 more. She now has 15. How many did she begin with ?

Answers

Answer 1

Answer:

8

Step-by-step explanation:

15-7=8

8+7=15

Answer 2

Answer:

16

Step-by-step explanation:

1) Subtract 7 from 15. 15-7=8

2) Multiply 8 by 2. 8x2=16

Therfore your answer is 16.


Related Questions

What is the solution to the following equation? (1 point) 8(2x − 10) + 18 = 4x + 22 4 5 7 8

Answers

Answer:

x=7

Step-by-step explanation:

8(2x-10)+18=4x+22

distribute the 8

16x-80+18=4x+22

simplify

16x-62=4x+22

ads 62 to each side

16x=4x+84

subtract 4x from each side

12x=84

divide each side by 12

x=7

In 1998, Journeys sold 15 million pairs of Vans across the
U.S. In 2008, Journeys sold 45 million pairs of Vans. What
was the average rate of change in shoe sales for the store?

Answers

Answer:

3 million/year

Step-by-step explanation:

Average rate of change is the slope in same interval:

(45 million - 15 million)/(2008 - 1998) years=30 million / 10 years =3 million/year
Given:

In 1998, Journeys sold 15 million pairs of Vans.

In 2008, Journeys sold 45 million pairs of Vans.

To Find:

The average rate of change in show sales for the store.

Formula:

Final year : 2008

Initial year : 1998

Final sale : 45 million

Initial sale : 15 million

Average sales = Final sale - Initial sale / Final year - Initial year

Explanation:

Average sales = 45 million - 15 million / 2008 - 1998

Average sales = 30 million / 10 years

Average sales = 3 million / 1 year

Answer:

The average rate of change in show sales for the store is 3 million per year.

for every 15 students who run track there are 7 students who play baseball there are 112 more students who run track than play basball

Answers

Answer:

How many students run TRACK? 210

How many students play BASEBALL? 98

15*14= 210 and 7*14 = 98, 210 - 98 = 112

Answer:

There are 210 students who run track and 98 students who play baseball.

Step-by-step explanation:

15x= Students who run track

7x= Students who play baseball

15x - 7x = 112 (*combine like terms)

8x = 112 (*divide 112 by 8)

X = 14 (*now plug X into both equations stated earlier)

15x = 15 x 14 = 210 (Number of students who run track

7x = 7 x 14 = 98 (Number of students who play baseball)

true or false please help me ​

Answers

#1 is trueeee
#2 is falseeeee

U have a great day now

URGENT !!!

a dairy farmer sells milk at a farmer’s market. the graph shows what she charges for different quantities of milk.

questions:

a. what is the slope of the line?

b. how much will the farmer charge for half a gallon of milk?


Answers

a) m = 9/2
b) half a gallon = 1/2
So, $2

Help please math is so hard

Answers

Answer: Well the answer is 21 lol and that is all can do for you dude! XD

Step-by-step explanation: I DUMB! XD

Jordan has $20 to share with three people how much money do three people get

Answers

Maybe 6 dollars? Sorry if i'm wrong :(

Answer:

each person would get 6.66 dollars and 2 dollars would remain left iver

Solve the problem below by finding a common denominator.
5/6-2/5

Answers

Answer:

I know how to this in one of two ways and I'm not sure if they're correct but anything to help.

5/6-2/5 would get you 1/3 because if you cross multiply and cross out factors that can go into each you cant pretty much get that answer. ( i think)

or

the common denominator would be 30 multiply 5 by 5 and 2 by 6. 25-12 is 13. How I was taught was find a number that both denominators can go into then multiply by that number. So 6*5= 30 so you would multiply 5 by 5 to get 25.

Hope I explained this well, I don't really think so.

Help!!!! Find the value of x

Answers

Answer:

180=x+10+64

-x=74-180

-x= -106

x=106

Step-by-step explanation:

Find the area of the rectangle and the triangle independently. What is the ratio comparing the area of the triangle to the area of the rectangle? (Must be in Reduced Form)

Answers

Answer:

hello your question is incomplete attached below is the complete question

answer : 2

Step-by-step explanation:

Area of rectangle = [tex](\frac{b}{h}) (\frac{h}{2})[/tex]

Area of triangle = [tex]\frac{1}{2}bh[/tex]

therefore the ratio of the area of the triangle to the area of the rectangle

=  [tex]\frac{\frac{1}{2} bh}{\frac{b}{2}*\frac{h}{2} }[/tex]  =  2

Find the x-intercepts for the parabola defined
by this equation:
y=3x² + 3x - 6
Write your answer as two ordered pairs:
(x1.yı). (x2,42)
Separate the values with a comma. Round, if
necessary, to the nearest hundredth

Answers

Answer:

[tex]x-intercept(s): (1,0),(-2,0)[/tex]

Step-by-step explanation:

how do you write 5,520 in scientific notations

Answers

Answer:

5.52  ×  10^ 3

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10 .  If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Willing to Paypal Who every can Answer this question I created.
MUST BE CORRECT OR REPORTING!

Answers

Answer: 17

Step-by-step explanation:

Each side has one line on it indicating each side is equal therefore 5y-3= 4y+1. Once you put them equal to each other you solve for y. You start by isolating the variable by inverse operations so you add 3 to both sides which leaves 5y=4y+4 and then you subtract 4y from both sides leaving y=4. Now that you found the value of y you input that value into one of the expression for one of the sides and solve. 5(4)-3= 17

6 It takes one hour to drive 80 km. How far can you drive in 20 minutes at that speed?
a) 20 km
b) 25 km
c) 27 km
d) 30 km


Please help I want with steps

Answers

Answer:

c) 27 km

Step-by-step explanation:

Speed is 80 km/h

Time is:

20 min = 20*1/60 h = 1/3 h

Distance = Speed*Time

Distance is:

80*1/3 = 26.66

Closest answer choice is c) 27 km

Answer:

C

Step-by-step explanation:

is y=1/100(31)x a exponential decay?

Answers

no;

it is exponentially always increasing

Triangle FGH was dilated using a scale factor of 1/2 to create triangle PQR
Which statement is true?
A. Angle F is two times the measure of angle P.
B. Angle P is two times the measure of angle F.
C. Side FG is the same length as side PQ.
D. Side FG is two times the length of side PQ.

Answers

Your answer is: A. Angle F is two times the measure of angle P

Tony's family owns a Chihuahua that gets 3 dog bones each day for doing tricks. Tony has a total of
16 dog bones he must give his dog for doing tricks. Write an algebraic equation that describes the
relationship between the number of days (d) and the number of bones remaining (b).

Answers

9514 1404 393

Answer:

  b = 16 -3d

Step-by-step explanation:

If Tony gives 3 dog bones per day, then he uses 3d dog bones for d days. The number remaining will be this value subtracted from the original number:

  b = 16 -3d

Guess the car GIVING BRAINIEST
Hint**1959**
Google image search wont work ;)

Answers

Answer:

A ford Angelina

Step-by-step explanation:

Answer:

a cadillac..................?

What is 15% of 90? a

Answers

Answer:

13.5

Step-by-step explanation:

Help me with this please !!!

Answers

Answer:

x = 61°

Step-by-step explanation:

x and 61° are alternate exterior angles and are congruent, thus

x = 61°

Answer:

X=61.

Step-by-step explanation:

✍✍✍✍✍✍✍

-9 (c + 7) = -13c +7
What value of c makes the equation true? Enter the answer in the box.

Answers

Answer:

c=17,5

Step-by-step explanation:

-9(c+7) = -13c+7

<=> -9c - 63 = -13c+7

<=> -9c + 13c = 7+63

<=> 4c = 70

<=> c = 70/4 = 35/2 = 17,5

CHECK THE ANSWER:

-9(c+7) = -13c+7

-9(17,5+7) = -13×17,5+7

-220,5 = -220,5

Hope it's help u:))

(#4) which IS NOT a linear equation?

Answers

The correct is g for your question

Which conic section is represented by the following equation?
3x2 – 7x + 8y2 - 2y + 1 = 0

Answers

Answer: ellipse

Step-by-step explanation:

on edge you can graph it too if you want to check.

9
The dew point in degrees Fahrenheit can be calculated with the formula DP = T (100 - RH), where DP is
the dew point, T is the dry-bulb temperature, and RH is the relative humidity. Which of these is the equation
solved for RH?
RH = 100 -
(T-DP)
RH = 100 – 2 (DP-1)
RH = 100 – (DP-1)
RH = 100 – 25 (T-DP)

Answers

Answer:

B

Step-by-step explanation:

I took that same test and i didthe practice test. Believe me.

The equation that can be used to solve for RH is 25/9(DP-T) - 100

Given the formula for the dew point in degrees, Fahrenheit expressed as

DP = T - 9/25(100 - RH)

To solve for the value of RH, we will make RH the subject of the formula;

DP = T - 9/25(100 - RH)

Subtract T from both sides:

DP - T =  9/25(100 - RH)

Multiply both sides by 25

25(DP - T) = 9(100 - RH)

25(DP - T) = 900 - 9RH

25(DP - T) - 900 = 9RH

RH = 25/9(DP-T) - 100

Hence the equation that can be used to solve for RH is 25/9(DP-T) - 100

Learn more on subject of formula here: https://brainly.com/question/11000305

While mining, Fred found a large metal bar that weighed 45 grams. Fred was also able to
determine that the bar had 33 grams of nickel. What percent of the weight of the bar was
nickel? Round your answer to the nearest tenth if necessary.

A.73.3%

B.70%

C.55.6%

D.71.3%

Answers

The answer I got is a

What type of triangle has one obtuse angle and two acute angles?

Answers

Answer:

Obtuse Triangle.

Step-by-step explanation:

If you search it up, you will see, and I hope that this helps! <3

Answer:

An obtuse triangle.

Step-by-step explanation:

An obtuse triangle has one obtuse angle. It must also have two acute angles because of the triangle sum theorem.

Hope this helps.

if the recipe takes 60 minutes to cook at a temperature of 350 degrees how many minutes would it take at 200 degrees

Answers

Answer:

34.28 minutes

Step-by-step explanation:

60:350=x:200

12000=350x

x=34.28

Answer: 105 minutes

Step-by-step explanation: inverse variation = 350/200 = x/60

The equation x=-3 is:

Answers

Answer:

C

Step-by-step explanation:

It Is not a function, please check out the definition of function on google.

Answer:

Since x=-3, as a vertical line, has infinite values of y associated with this single value of x this is not a function. hope this helps.

Step-by-step explanation:

the king is having a sale where customers can buy 4 new tires for 419.96 what is the unit price of the tires

Answers

Answer:

you just do 419.96/4 which in this case equals 104.99

Step-by-step explanation:

For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.
a. Yes; y = 1.2x
b. Yes; y = 2x
c. Yes; y = x + 1
d. no; y does no vary directly with x.

Answers

The answer to your question is D
Other Questions
A bacteria culture initially contains 2000 bacteria and doubles every half hour.Find the size of the baterial population after 60 minutes.Find the size of the baterial population after 7 hours. Which punctuation is used to replace a letter when two words are joined to make one word?A.apostropheB.commaC.hyphenD.parenthesesE.quotation marks What is the purpose of writing an argument what is x for this X/16-12=8? If a pore is a space that can hold water, explain the importance of pores in determining if a surface is permeable or impermeable? 1. Which Native American tribe called itself "people of the first light?"A.NarragansettB. MassachusettC.WampanoagD.Pequot 90% of cancer originate from Betty made a simple electromagnet using just a battery and a wire. What could Betty do to increase the strength of her electromagnet? options: Coil the wire around a test tube. Coil the wire around a toothbrush Coil the wire around a paper towel roll. Coil the wire around a nail. What is the answer? Please help with this question (ASAP!!)Two base angles of an isosceles triangle measure (3x + 2) and (5x - 30) degrees. How many degrees are in the third angle of the triangle? Be sure to use the correct place value. How do you write the expression 18x+30y A student is training for the track team during the first three months of the year byrunning for 30 minutes every day, while averaging 5 miles each day. Select the graphthat correctly shows the total miles the student ran during the time of his trainingprogram.1)Hous5002)200Hours10238503) The height of an object launched vertically upward is given by the function h(t)=200+11t-4.9t^2, where h is in meters and t is in seconds. What is the objects approximate speed when it hits the ground? Given the function y = 2x - 6, explain how you can evaluate when x = -1. Cual es el monto producido por un capital de 7200 colocados al 4% anual durante 3 aos y 4 meses ? PLZZZZZZZZ I WILLL GIVE BRAINLEAST PLZZZZZZ HURRYThe exchange of plants and animals between Europeans and the people living in the Americas A. Changed the lives of both groups of people foreverB. Caused strong bonds of friendship to develop between the two culturesC. Caused the Native Americans to develop immunity to European diseasesD. Is the reason the country of Columbia got its name. PLEASE HELP HEHE!!!! A bag contains 3 red balls, 8 blue balls and 11 white balls. What is the probability of drawing two balls after replacing the first ball; first is red and then a white ball? Round to the nearest tenth and include a percent sign Joe owns a dirt bike shop. He bought a dirt bike at cost for $252. If he marks up the price by 60%, what is the retail amount of the bike? (Reminder you are working with money and need to round to 2 decimal places). The amount of Markup is $ . The retail amount is $ 2.Simplify the following mathematical expression?a.555+(22+343-(168+3-15)