Lea sold half of her comic books and then bought thirteen more. She now has 42.
With how many did she begin?

Answers

Answer 1
42-13=29
29 times 2= 58
She began with 58 comic books!

Related Questions

2+2^2 divided by 4+3

Answers

Answer: 6

Step-by-step explanation: 2^2=4

4/4=1  1+2+3=6

What is the equation of the line that has a slope of - 3 and a y-intercept of 2?

Answers

Answer:

y = -3x + 2

Step-by-step explanation:

We will use the form y = mx + b

m is the slope

b is the y intercept

y = -3x +2

George makes $20 doing lawn work for 4 hours each
week. He wants to buy a $2,500 used car from his
grandmother. He has been saving this money for
30 weeks. How much has he saved?

Answers

Answer:

$600

Step-by-step explanation:

1 week = $20

30 weeks = 20 x 30 = $ 600

The saving of 30 weeks would be an amount of 600 dollars.

What is the Multiplication operation?

In mathematics, Multiplication operations perform Multiplying values on either side of the operator.

For example 4×2 = 8

George makes $20 doing lawn work for 4 hours each week.

He has been saving this money for 30 weeks

The saving of one week = $20

The saving of 30 weeks = $20 × 30

Apply the multiplication operation to get

The saving of 30 weeks = $600

Alternative method :

According to the given situation, we can write a ratio as

one week : 20 dollars = 30 weeks : x dollars

⇒ 1 / 20 = 30 / x

Apply the cross-multiplication operation,

⇒ 1 × x = 30 × 20

Apply the multiplication operation to get

⇒ x = 600

Hence, the saving of 30 weeks would be an amount of 600 dollars.

Learn more about Multiplication operations here:

brainly.com/question/25834626

#SPJ2

Pls help I don’t get how to do these <3 thanks boo

Answers

Answer:

2

Step-by-step explanation:

Formula for

Lower quartile (Q1)

= N + 1 multiplied by (1) divided by (4)

The sum of two numbers is 13 and the difference is 5.
Whats the answer?

Answers

Answer: the first number is 9, the second is 4

Step-by-step explanation:

let n = 1st number

let n-5 = 2nd number

n+(n-5)=13

collect like terms: 2n-5=13

add 5 to both sides

2n=18

divide both sides by 2

n=9

n-5=4

Type the missing digit below
4_3,302 is divisible by 9.

Answers

Answer:

463,302 is divisible by 9

Step-by-step explanation:

technically they're all divisible by said digit but when you put 6 it's the only one with a product of a whole number. hope this helps.

next numbers of the pattern

1,2,3,5,8,13,__and__

Answers

Answer:

21 and 34

Step-by-step explanation:

This is a Fibonacci sequence. Basically, the next term is the sum of the 2 previous terms.

Notice the third term, it's the sum of 2 and 1.

Notice the fourth term, it's the sum of 3 and 2.

Each term follows the same pattern.

The answer s are 21 and 34

Please helppp for brainly

Answers

Answer:

1.3 < x < 37.7

Step-by-step explanation:

Given 2 sides of a triangle then the 3rd side x is in the interval

difference of 2 sides < x < sum of 2 sides , that is

19.5 - 18.2 < x < 19.5 + 18.2 , then

1.3 < x < 37.7

Which of the following is a polynomial?
Ox2 + 2
01-1
7x7 - 2x-4 + 3
0 (x8–2)
(x-2+3)

Answers

Answer:

x^2 + 2

Step-by-step explanation:

can't have negative powers

Answer:

I think it's 7x7 - 2x-4 + 3

−6x+4+5x=2
what does x equal

Answers

Answer:

-2

Step-by-step explanation:

-6x+4+5x=2

-1x=2-4

-1x=-2

x= -2/1

x=-2

The area of the regular hexagon is 10. 4 in. 2. A regular hexagon has side lengths of 2 inches and an area of 10. 4 inches squared. An apothem is shown. What is the measure of the apothem, rounded to the nearest tenth of an inch? 1. 3 in. 1. 7 in. 2. 0 in. 3. 4 in.

Answers

Answer:

Step-by-step explanation:

Answer:

1.7

Step-by-step explanation:

Given:

Area of polygon=10.4

sides of polygon=2

Formula for area of a regular polygon= 1/2 (apothem x perimeter )

Putting value, we get

10.4= 1/2 ( a x 12 )

10.4=6a

a=10.4/6

a=1.73

Answer:

Step-by-step explanation:

1.7Step-by-step explanation:Given:Area of polygon=10.4 sides of polygon=2 Formula for ...

how many feet of border will I need to put around the 4 side my bulletin board if the length if 5 yards and the width is 2 yards

Answers

Find the perimeter, use the equation perimeter = 2(width)* 2(length)

Is an Angle Two or 1 dimensional ?

Answers

Answer:

An ordinary angle is a measure of the length subtended by a one-dimensional subset of the plane. For example, an angle of 60∘ is subtended from a point by a 16 portion of a circle centered at that point. The 16 arc that subtends the angle is a one-dimensional subset of the two-dimensional plane.

Step-by-step explanation:

Aarav has 3,250 followers on social media. His number of followers is increasing at a rate of 3% per week. Which function represents his number of followers each week?

A.
f(w) = 3,250(3)w

B.
f(w) = 3,250(1.03)w

C.
f(w) = 3,250(0.03)w

D.
f(w) = 3,250(0.97)w

Answers

Answer:

Step-by-step explanation:

3,250(3)w

B.

f(w) = 3,250(1.03)w

C.

f(w) = 3,250(0.03)w

D.

f(w) = 3,250(0.97)w

If cos (xy) = y-1, then the value of dy/dx when x=π/2 and y = 1 is

Answers

Following are the calculation to the method value:

Given:

[tex]\cos (xy) = y-1\\\\ x=\frac{\pi}{2} \ \ and \ \ y = 1[/tex]

To find:

[tex]\frac{dy}{dx}=?[/tex]

Solution:

[tex]\to \cos (xy) = y-1\\\\\to \frac{d}{x} \ (\cos xy) = \frac{d}{dx}\ (y-1)\\\\\to -\ ( \sin xy) \frac{d}{dx} \ (xy) = \frac{dy}{dx}\\\\\to -\ ( \sin xy) ( x\ \frac{d}{dx} + y) = \frac{dy}{dx}\\\\\to - x \sin (xy) \ \frac{dy}{dx} -y\sin (xy) =\frac{dy}{dx}\\\\\to \frac{dy}{dx} (1+ x \sin \ xy) = - y \sin xy\\\\\to \frac{dy}{dx}=\frac{-y \sin xy}{1+x\sin xy }\\\\[/tex]

When [tex]\ x=\frac{\pi }{2} \ \ \ and \ \ \ y=1\\\\[/tex]

[tex]\to \frac{dy}{dx}=\frac{- 1 \sin (\frac{\pi }{2})}{1+ \frac{\pi }{2} \sin \frac{\pi }{2} }\\\\\to \frac{dy}{dx}=\frac{- 1 }{1+ \frac{\pi }{2} } = \frac{-1 }{\frac{2+\pi }{2}}\\\\\to \frac{dy}{dx}=\frac{-2}{2+\pi }\\\\[/tex]

Learn more:

brainly.com/question/23143484

What is difference between the mean and the average?

Answers

Average is the sum of all the values divided by the number of the values. Whereas, Mean is the average in the given data. In statistics, the mean is equal to the total number of observations divided by the number of observations.

Hey there!

• Mean is the average (total) with the given set of numbers in your data plot

• Average is the sum of your total numbers that are divided by the total numbers in your data plot.

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Please help, What is the slope of the line???

Answers

Answer:

Step-by-step explanation:

The slope is calculated using rise over run, or y2-x2/y1-x1

The clear coordinates are (-3, 2) and (1,4).

Let 4 be y2, 1 be x2, 2 be y1 and -3 be x1.

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

the slope is 3/5

Find the output, y when the input, x, is 2

Answers

Answer:

-2

Step-by-step explanation:

Write – 19 7/10 as a decimal number.

Answers

Answer:

I looked it up

Step-by-step explanation:

So the answer is that 19 7/10 as a decimal is 19.7.

1. Abby did 121 sit-ups in 8 minutes. Estimate
the number of sit-ups she
1 minute.

Answers

Answer:

15 sit-ups

Step-by-step explanation:

15.125 --> 15


The polygons are similar Find the value of x

Answers

Answer:

The value of the x variable is 30.

Step-by-step explanation:

Since the triangles are similar, the corresponding sides of both triangles have a common ratio. The 18:12 ratio of side LK and QR is equal to 2:3, and the 21:14 ratio of sides JL and PQ is also equal to 2:3. Based on this, we know that 2/3 * x = 20, so we isolate the x variable by dividing both sides of the equation by 2/3 to get the answer: x = 30.

The following points lies on a Given line (10,0) and (0,-15) who’ve of the following points will also Be on the given line

(10,5) b(-3-15) c (1,-13.5). D(12,5)

Answers

Answer:

Step-by-step explanation:

We can form an equation from the two given points.

The standard form of an equation for a straight line is y=mx+b, where m is the slope and b is the y-intercept (the value of y when x = 0).

We can calculate the slope from the two given points, (10,0) and (0,-15). Slope is Rise/Run, where Rise is the change in y and Run is the change in x.

From the two given points, starting at (0,-15) and ending at (10,0):

Rise = (0-(-15)) = +15

Run = (10-0) = 10

Rise/Run (slope) = 15/10 or 1.5

The equation becomes y = (1.5)x + b

We know b, since it is the value of y when x=0. The point (0,-15) says -15 when x=0. You can also can find b by entering either of the two given points and solving for b. I'll pick (10,0):

y = (1.5)x + b

(0) = (1.5)*(10) + b

0 = 15 + b

b = -15

The equation is y = (1.5)x - 15

Check this with a DESMOS graph (attached).

9.3 divided by 0.8 I need to show my work

Answers

Answer:

11.625

Step-by-step explanation:

It takes 3 km of the red to make five boxes of shirts how many kilometers of thread will it take to make three boxes

Answers

1.8k kilometers is needed to make 3 boxes

Which lines are parallel? How do you know?

Answers

Answer:

The two at the left are parallel.

7. Use the figure below to solve for x​

Answers

Answer:

x= 45

Step-by-step explanation:

55 +2x+(x-10) =180

2x + x-10 = 125

3x = 135

x=45

What is reciprocal of the fraction in the equation 3/5(2x+8)=18?

Answers

Answer:

5/3

Step-by-step explanation:

The reciprocal is the fraction upside down.

How does the transformation y = f(x) - 4 change the point
(3,27) in the original graph of f(x) = x^3?

Answers

Answer: It shifts down 4 units to 3,23 It shifts up 64 units to 3,91 It ...

Step-by-step explanation:In this section, we study how the graphs of functions change, ... 3. 4. 5 y = f(x). The Fundamental Graphing Principle for Functions says that for a point ...If the graph is transformed into the graph defined by y= f(2x–8), determine the domain of the transformed graph. y = f[2(x-4)} horizontal stretch by shift 4 ...

1) Find the value of 1 + 3x when x = 1

Answers

Answer:

4

Step-by-step explanation:

So, since we already know x = 1, we just need to figure out what 3 x 1 is. (Since there's no space between the 3 and the x, 3x would be 3 times x.)

3 x 1 = 3.

So, our "new equation" is:

1 + 3

Add them together to find the answer:

1 + 3 = 4

4 is your answer.

Hope this helps and have a nice day!

Manny has 119 shells Chloe has 10 shells how many shells do they have in all

Answers

Answer:

129

Step-by-step explanation:

They have a total of 129 shells

119 + 10 = 129
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