Mathematics High School

5) William sold half of his comic book collection then purchased 10
more. He now has 24 comic books. How many books did William
begin with?

Answers

Answer 1

Answer:

14

Step-by-step explanation:

If he has a total of 24

and he just purchased 10

24-10= 14

Related Questions

Please solve this simultaneous equation, i'm not that good at it.

2r-s=10
rs-s^2=12

Answers

Answer:

s = 6, r = 8 or s = 4, r = 7

Step-by-step explanation:

2r - s = 10

2r = 10 + s

r = 5 + s/2 --(1)

rs - s^2 = 12 --(2)

sub (1) into (2):

(5 + s/2)s - s^2 = 12

5s + 0.5s^2 - s^2 = 12

-0.5s^2 + 5s - 12 = 0

s^2 - 10s + 24 = 0

(s - 6)(s - 4) = 0

therefore s = 6 or s = 4

when s = 6, r = 8 and when s = 4, r = 7

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Answers

Answer:

x=7

Step-by-step explanation:

the you’re answer you’re looking for is X=7 !

URGENT SOMEONE HELP PLEASE!!

Answers

a = 2b + 6 — (1) [given]
a = 9b - 8 — (2) [given]

a = a
sub. in the eqns (1) and (2)
2b + 6 = 9b - 8

collect like terms :
6 + 8 = 9b - 2b
14 = 7b
b = 2

there are 175 total balloons the ratio of gold to silver balloons is 3:2 how many balloons are gold out of the 175 balloons

Answers

175/3 = 117 gold 58 silver

PLEASE HELP I WILL MARK AND 5 STARS SOLVE AND EXPLAIN THANKS

Answers

3 3/4 or 3.75 I think

Which number sentence is true?
A. –2.0 + (–0.5) = 2.5
B. –4.5 + 6.5 = –2.0
C. 3.0 + (–0.5) = –2.5
D. 5.5 + (–2.5) = 3.0

answer soon please!

Answers

Answer:

B. and D.

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Here are the correct sums:

A. –2.0 + (–0.5) = -2.5

B. –4.5 + 6.5 = 2.0

C. 3.0 + (–0.5) = 2.5

D. 5.5 + (–2.5) = 3.0

Only D is correct.

Answer: D

A biker cycles 9 miles in 2 3 of an hour. b The distance here varies directly with time. What is the constant of variation? (It is the hikers’ rate .)

Answers

Answer:

27/2

Step-by-step explanation:

Hope this helps! Also dont add comments to get gems like bruh ;-;

Answer: 27/2

Step-by-step explanation:

[tex]9\cdot \:1=x\frac{2}{3}[/tex]

[tex]x\frac{2}{3}=9\cdot \:1[/tex]

[tex]x\frac{2}{3}=9[/tex]

[tex]3x\frac{2}{3}=9\cdot \:3[/tex]

2x= 27

x= 27/2

Add Me Brainliest!

Ed wants to buy a basketball for $5, but
his bank account only contains $3. If Ed
purchasos tho baskotball, how much
money will his bank account show?

Answers

His bank account will show -2

Harry and Selma start driving from the same location. Harry drives 42 miles north and Selma drives 144 mies east. How far apart are Harry and Selma when they stop?

Answers

Answer:

150 miles

Step-by-step explanation:

use the pythagoerean theorem

42^2 + 144^2 = c^2

1764+20736=c^2

22500 = c^2

c= 150 miles

b+b-1+b+b+10=___b+9
whats the blank spot??​

Answers

4b+9 is the answer just add up the b’s

Compare data set A and data set B.
Set A: mean = 79.6, standard deviation = 9.8
Set B: mean = 79.6, standard deviation = 2.3

Answers

Answer:

Set A: mean = 79.6, standard deviation = 9.8

Step-by-step explanation:

Set A has a larger spread of data.

If Set A: mean = 79.6, standard deviation = 9.8 and Set B: mean = 79.6, standard deviation = 2.3 then set A has  larger spread of data compared to set A.

What is Statistics?

Statistics is the study and manipulation of data, including ways to gather, review, analyze, and draw conclusions from data.

Given,

Set A:

mean = 79.6,

standard deviation = 9.8

Set B:

mean = 79.6,

standard deviation = 2.3

As we compare both set A and set B the mean of set A and set B are same whereas set A has more standard deviation than set B.

As Standard deviation is an important measure of spread or dispersion.

if the standard deviation is small, then this tells us that the results are close to the mean, whereas if the standard deviation is large, then the results are more spread out.

Set A has a larger spread of data.

Hence Set A has larger spread of data compared to set A.

To learn more on Statistics click:

https://brainly.com/question/29342780

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The distance from Philadelphia to Harrisburg is 5 inches on the map. The actual distance is 100 miles. The distance from Allentown to Harrisburg is 4 1/20 inches on the map. What is the actual distance, in miles, from Allentown to Harrisburg?

A.) 81 miles
B.) 405 miles
C.) 65 miles
D.) 84 miles

Answers

Answer:

A. 81 miles

Step-by-step explanation:

I have 1 word problem and a math problem. (word prob)A light-year is the distance that light travels in a year and is equivalent to 9.461 * 10^12. Write this distance in standard form.

(math prob) Order the list of numbers from least to greatest.
8.5*10^12,3.6*10^8,5.85*10^-3, 2.5*10^-1,8.5*10^8. ( This ^ means there are square roots for the numbers).



My math class is real soon. Pls, answer them. Thanks!!

Answers

Answer:

1. 9461000000000

move the desimal in 9.461 12 places to the right to get:

9461000000000

2.

5.85 x 10^-3,

2.5 x 10^-1,

3.6 x 10^8,

8.5 x 10^8,

8.5 x 10^12

the smallest exponent is the smallest. Since 8.5 x 10^8 and 3.6 x 10^8 have the same exponent, go to the desimal

solve for x: -5|x + 1| = 10

Answers

Answer:

x=-3

Step-by-step explanation:

-5(x+1)=10

-5x-5=10

-5x= 15

x=-3

I will give brainliest answer to these questions

Answers

Answer:

THATS MADDDD CAPPPP U NEED 25 POINTS OF THE QUESTION FOR BRAINLIEST

What is the square root of 40000 step by step
Thx for everything that answers

Answers

The answers 200 of u have an iPhone u can ask siri what the square root of whatever number is and it will tell u the correct answer

13 pretty please
:)tyyyyyyy

Answers

Answer:

B.

Step-by-step explanation:

A single bus fare costs $2.35. A monthly pass costs $45.75. Celine estimates that she will ride the bus 25 times this month. Kamal estimates that he will ride the bus 18 times. should they both buy monthly passes? Explain.

Answers

Answer:

No they shouldn't.

Step-by-step explanation:

Monthly pass: Celine: $1,143 Kamal: $823

Single Pass: Celine: $58 Kamal: $42

Evaluate each value expression for the given value of x : 22-x/5 , x=20

HURY!!!!!!!!!!!

Answers

Answer= 18

22-20/5
22-4
=18

Answer:

10 maybe sorry if wrong

Step-by-step explanation:

22-x x=20 so that should be 2 then u do 2x5 =10

How do you find the slope of the table below

Answers

It’s rise over run, or (Y2-Y1)/(X2-X1)

Pick any two sets and plug in.

(24-16)/(21-14) = 8/7

(BRAINLYEST TO RIGHT ANSWER) pls i need help!

Answers

Answer:

What is the question?

Step-by-step explanation:

Answer:

where is the question

Step-by-step explanation:

ASAP answer it please.!!!!!!!!!!!!!!!!!!! thank uuu

Answers

Answer:

X=120 and y=10,z=120

Step-by-step explanation:

corresponding angles

thus 120=(13y-10)=x

On your last math quiz, you got 15
out of 20 questions correct. What is
your percentage of correct answers?

Answers

Answer: 75%

Step-by-step explanation: So 15/20 simplified is 3/4 and 3 divided by 4 equals 0.75. To convert a decimal to a percentage, you multiply 0.75 by 100 to get 75%.

Solve the system of equations
-6y+11x=-36
-4y+7x=-24
x=
y=

Answers

Answer:

Y=6

X=0

Step-by-step explanation:

Hope this helps

Help me
Line ℓ is perpendicular to line m. Find the value of x and w.

Answers

138° + w° = 180° (sum of angle on a straight line)
w° = 180° - 138°
w = 42

19° + x° + w° = 90°
sub. in w=42,
19° + x° + 42° = 90°
x° = 90° - 19° - 42°
x° = 29°
x = 29

ANSWER PLSSS THANK YOUUUUU

Answers

Answer:

As a fraction: 81/100 (cannot be simplified) Decimal: 0.81 and a percent 81%

Step-by-step explanation:

Count the blocks and convert (you can also use an array.) Hope this helps you!

Answer:

Fraction: 81/100

Decimal: 0.81

Percent: 81%

Step-by-step explanation:

The box is a 10x10 so it has 100 squares inside.

There are 81 squares shaded so the fraction would be 81/100

To get the decimal just divide 81 by one hundred so the decimal is .81

As a percent is would be 81%

Hope this helps ya!!

ILL GIVE YOU BRAINLEST!!

Answers

Answer:

24 pennies

Step-by-step explanation:

120 x 0.2 go get 24 and other will get 48


What is the slope of the line passing through the points (-6, 33) and (-2, 15)?

Please answer quick

Answers

Answer:

The slope is -9/2

Step-by-step explanation:

m=y²-y¹/x²-x¹

m=15-33/(-2)-(-6)

m=-18/4

m=-9/2

Write the equation of the line fully simplified slope-intercept form

Answers

Y=-4x-6
Cause slope is -4/1
Y-intercept is -6

Answer:

y=-3x+6

Step-by-step explanation:

that might not be fully simplified, but that should be the equation

What is a first step to solving for x in the equation −=9 x minus 7 equals 10? How would you check your solution

Answers

Answer:

-17/9

Step-by-step explanation:

You need to add 7 to both sides.

-9x - 7 = 10

-9x -7 + (7) = 10 + 7

-9x             = 17

Then both sides for (-9)

-9x/(-9) = 17/(-9)

          x = -17/9

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