Mathematics High School

joe sold half of her comic books, then she bought 18 more. She now has 36. With how many did she bigin?

Answers

Answer 1

Answer: Joe began with 36 books.

Step-by-step explanation:

x/2+18=36. 36+18=x. x/2-18=36.

Answer 2
36

x/2+18=36
-18. -18
(2)*(1/2x)=(18)*(2)
x=36

Related Questions

a. a triangle with one right angle and two congruent sides​

Answers

Answer:

is an isosceles right triangle, angles 45, 45, & 90 degrees

Step-by-step explanation:

What property is -2x–6+4=-2? (see image)

Answers

x = 0 pretty sure that’s the answer

What are the coordinates of the image after a dilation
with the center at the origin and a scale factor of 2?
(0, 0) (10, 0) (10,4) (0, 4)
(-2.2) (8, 2) (8.-2) (-2,-2)
(1, 1) (6, 1) (6, 3) (1, 3)
(0, 0) (0, 2) (5.0) (5,2)

Answers

Answer: Choice B)  (-2, 2), (8,2), (8, -2), (-2, -2)

Explanation:

The scale factor 2 means we multiply the coordinates of every original point by 2. A point like (-1,1) moves to (-2,2) after doing so

As another example, (4,1) moves to (8,2) after multiplying both coordinates by 2.

what is the density of a pine log if the weight is 42.63 lbs, radius 5 in, length 30in

Answers

Answer:

Step-by-step explanation:

density is weight divided by volume. And the volume of a log is like a cylinder.

V=hpi(r^2) in this case

V=25(30)pi=750pi so

d=(42.63)/(750pi)

d=0.018 lb/in^3

All of the following expressions are equivalent except _____.

7 - x
x - 7
- x + 7
7 + (- x)

Answers

Answer:

x - 7

Step-by-step explanation:

7 - 1= 6

1 - 7= -6

-1 + 7= 6

7 + (-1) =6

A pair of shoes cost $75. This is $35 less than the cost of a pair of jeans write and solve an equation,Using n for the variable to find the cost of the jeans

Answers

Answer:

n=75 pair of shoes

n-75=35 equation

n=35+75=110

cost of jeans=110

Select the values of that make the inequality true.
X< 2.1

Answers

Answer:

B, C, and D

Step-by-step explanation:

They all have lower values than 2.1

For all parts of this question, use the function y + 2 = 3(x + 4)
Part A: Complete the x-y table:

Answers

i would start by simplifying the equation to get y by itself, you don't need to do this, but it makes it a little easier

y + 2 = 3 ( x + 4) distribute the 3 through the parenthesis

y + 2 = 3x + 12. subtract 2 from both sides

y = 3x +10

now to fill in the chart simply plug in the value of x to see what value of y it produces

y = 3(-2) +10

y = -6+10

y = 4

(-2,4)

y = 3(0) + 10

y = 0 + 10

y = 10

(0,10)

y = 3(2)+10

y = 6 + 10

y = 16

(2,16)

y = 3(4) + 10

y = 12 + 10

y = 22

(4,22)

Please help due today in 10 minutes

Answers

Answer:

I can't help it's past due date. sorry

Step-by-step explanation:

Which of the following numbers has the smallest value?

19.45
19.445
19.5
19.454

Answers

Answer:

19.445

Step-by-step explanation:

It’s answer b 19.445

Please help!!! If you can

Answers

Answer:

Im guessing its B. Im sorry of this didnt help.

Step-by-step explanation:

[tex]y = 12000 {(1.04)}^{30}[/tex]

Merton's population = 38920.77012

//

18000 + 30(500) = 33000

Hapville's population = 33000

//

38920.77012 - 33000 = 5920.77012

5920.77012 ---> 6000

The answer is B.

PRECIZATI COORDONATELE PUNCTELOR DIN FIGURA DE MAI JOS STIIND CA PUNCTUL 0 ESTE ORIGINEA AXEI NUMEREOR

Answers

Answer:

gb! gxhkvjbuckkfkdjfjxlx?xlfkfjjmf la lfldkejnfnfmfkkfkf

What is the ratio of the length of the rectangle to its width 24 and 20

Answers

6:5 is the ratio
hope this helps!

Q2.
(a) Expand and simplify (m-8)(m + 5)

Answers

We can split the m-8 into 2 terms m and -8 each multiplying the next ( ) like this...

m(m+5)-8(m+5)

Now we expand

m^2+5m-8m-40

then simplify!

m^2-3m-40

Done!

If you have any more questions put them in the comments and brainliest will be appreciated

Write a proportion (or equation) to find the part, whole or percent. Then, solve.



What percent of 50 is 10?





Proportion or equation:

















Answer: _______________________





What number is 50% of 20?





Proportion or equation:

















Answer: _______________________





12 is 3% of what number?





Proportion or equation:

















Answer: ______________________

Answers

Answer:

20%

Step-by-step explanation:

What is 10 as a percentage of 50? 1000 ÷ 50 = 20. Answer: 10 is 20% of 50.

geometry// please help!

Answers

there is no picture attached
I would help but I don’t see a picture attached, sorry

Solve for value the two angles in the triangle and classify the triangle using the sides and angles

Answers

Step-by-step explanation:

x + 15 +2x + 66 = 180

3x + 81 = 180

3x = 99

x = 99/3 = 33

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you.

Answer:

The angles are 66, 66, and 48 degrees

The triangle is isosceles because 2 angles are equal, thus two leg lengths are equal

Step-by-step explanation:

the sum of all three angles in a triangle = 180 degrees

66 + 2x + (x+15) = 180

simplify

66 +3x + 15 = 180

reduce

81 + 3x = 180

subtract 81 from each side

81 - 81 + 3x = 180 - 81

3x = 99

divide both sides by 3

3x/3 = 99/3

x = 33

is 14.16 or 14.6 the higher number

Answers

Answer:

14.6 because 14.6 is equivalent to 14.60

Step-by-step explanation:

Answer:

14.6

Step-by-step explanation:

It would be 14.6 because 14.6 is basically 14.60

So you would compare 14.16 to 14.60

2. The lengths of the sides of a triangle are 4cm, 5cm and 6cm. Find, in degrees to one decimal
place, the size of the largest angle of the triangle.
​

Answers

Answer:

82.8 degrees.

Step-by-step explanation:

The largest angle is opposite the longest side.

So we find the angle opposite the 6cm line using The Cosine Rule:

6^2 = 4^2 + 5^2 - 2.4.5 cos A

cos A = (6^2 - 4^2 - 5^2) / (-2*4*5)

= -5/ -40

=  0.125.

So m angle A = 82.819 degrees.

If line a and line b are parallel, which angles are same-side Interior angles?
A.23 and 211
B. 28 and 23
C. 27 and 23
D. none of these

Answers

Answer:

i think its C. 27 tp 23 ****

bob has at least $5000 in savings. his savings balance is more than 3 times greater than his checking balance

Answers

Answer:

so then it to be 25000

Step-by-step explanation:

The answer would be 25000 because 5000 times 3 equals that.

suppose the company's cost per 1 gallon is $2.70 what is the markup if they sell each gallon at $3.20 then what is the markup if they sell each gallon at $3.50

Answers

Answer:

A= 50cents markup B=80 cents markup

Step-by-step explanation:

U just subtract the markup by 270 then bam

Please help on both! Will give brainliest!!

Answers

I can’t read it because the quality of the pictures are bad I’m sorry

The sum of 2 of the exterior angles of a triangle is 222 degrees. What is the measure of the third exterior angle?

Answers

Answer:

Exterior angles always add up to 360 degrees, therfore 360 - 222 = 138

Step-by-step explanation:

360 - 222 = 138

the answer to your question is 138degrees.

For any shape the exterior angles will always add up to 260 degrees.

Hope this helps in the future!

Answer:

360 - 222 = 138

the answer to your question is 138degrees.

For any shape the exterior angles will always add up to 260 degrees.

Step-by-step explanation:

Solve for x. Round to the nearest tenth as needed

Answers

Step-by-step explanation:

by Pythagoras :

H²= B²+ P²

(7+x)²= x²+ 9²

49 + 14x + x² = x²+81

14x = x² -x²+81 - 49

14x = 32

x = 32/14 = 16/7 = 2.28 cm = 2.30 cm

plz mark my answer as brainlist plzzzz.

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Hangi sayının 10 eksiğinin 7 katı 70'tir ?​

Answers

7*(x - 10) = 70
7x = 140. Wait if this is wrong I’m really sorry! Have a great day.

15 points for an answer for this question

Answers

Answer:

Is it Khan Academy? You do 5.8 - 2.7 = 3.1

Step-by-step explanation:

Hope that helps!

If A = 56, then find c

Answers

Answer:

Since A= 56 then B=56 so A+B=112

The whole tringle must be 180 degrees

So 180-112=68

SO C=68

I believe

4 minutes 53 seconds to seconds

Answers

Answer:

It's 293 seconds

Step-by-step explanation:

Answer:

293 seconds

Step-by-step explanation:

There are 60 seconds in a minute so 4x60=?

you know 4x6=24 so just take away the zero then add it back so it would be 240 then you just add 53 so, 240+53= 293 seconds and that's the answer.

Which equation is true?

Answers

Answer:

i think its the 3rd option

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