Paul was going to sell all of his stamp collection (s) to buy a video game. After selling half of them he changed his mind. He then bought ten more. How many did he start with if he now has 22?

Answers

Answer 1

Answer:

Paul had 24

Step-by-step explanation:

He has 22 now. Subtract the 10 he just bought for 12, which was half of his original collection.

22-10=12

12×2=24


Related Questions

Write the equation 5x=2y+10 in the slope-intercept form and find the slope of a line parallel to it. PLZ HURRY!

Answers

Answer: Y=-5/2x+5(Idk i'm doing it off of my head)

Answer:

y=5/2x -5 slope is 5/2

Step-by-step explanation:

parallel lines have the same slope

please help me please and thank u

Answers

Answer:

7 units

Step-by-step explanation:

the line JL starts at -2 and ends at 5. in order to get from -2 to 5 you have to add 7.

the length of JL would be 7 units

A calculator screen shows a number in scientific notation as 4.8E9. Write this number in standard form.

Answers

Answer:

4.8 x 10^9

Step-by-step explanation:

E9 is 10 raised to the power of 9

Scientific notation requires you to write a number from 1 to 10 then multiply it by 10 raised to a number x.

In this case:

4.8E9 = 4,800,000,000

Number between 1 and 10 = 4.8

Number of zeroes = 8 but because you have to multiply 4.8 times 10 to get 48 the answer is 4.8 x 10^9... so one extra 10... 1+8=9

Hope you understand

x(yz), for x = 8, y = -9, z = 5​

Answers

x(yz)
= 8(-9 x 5)
= -72 + 40
= -32

can someone help me with this one?​

Answers

Answer:

see attached

Step-by-step explanation:

does anyone know the step by step for this 9(m +5) - 3(m - 2) = 8m + 31

Answers

Answer :

Given :

9(m + 5) - 3(m - 2) = 8m + 31

We have to find value of m[tex].[/tex]

➠ 9(m + 5) - 3(m - 2) = 8m + 31

➠ 9m + 45 - 3m + 6 = 8m + 31

➠ 9m - 3m + 45 + 6 = 8m + 31

➠ 6m + 51 = 8m + 31

➠ 51 - 31 = 8m - 6m

➠ 20 = 2m

➠ m = 20/2

m = 10

Hope It Helps!

1. distribute the left side of the equation
9m+45-3m+6 (make sure to distribute the negative sign)=8m+31
2. put all the variable terms on one side and the constants on the other
-2m=-20
3. divide by -2
m=10

is square root of 26 a rational number

Answers

Answer:

The answer is no.

Plz help me quickly
what is the product of 9⋅(−4)⋅(−4)⋅(−7)


A. −1008

B. −252

C. 252

D. 1008

Answers

Answer:

A. -1008

Step-by-step explanation:

9x-4=-36

-36x-4=-144

-144x-7=-1008

Answer:

just go on playstore and search for photomath

need help anyone please

Answers

the answer is d

the equation you need to solve is:

5x + x-12 = 90

         +12    +12

6x=102

now, divide by 6 and you get x= 17

17-12 = 5

17 x 5 = 85

hope this helps!!

Two lines intersecting at a right angle
form a line.
are parallel.
are perpendicular.
form aray

Answers

Answer:

Form aray

Step-by-step explanation:

Neither form a line and it also have both parts and perpendicular

boy a and boy b are pushing a heavy table in the west direction at the same time with 10 units of force each.what is the net force acting on the object ?in which direction the table will move?​

Answers

Answer:

20 n

Step-by-step explanation:

as both are exerting force on the same side i.e. to the west side with 10 N each the total net force is 10+10=20N and the table will move to the west side....

Thank you

The net force acting on the object will be 20 units and the direction will be the same as the direction of force applied.

What is gravitational force?

All mass-bearing objects are attracted by gravitational force. Because it consistently attempts to bring masses together rather than push them apart, the gravitational force is referred to as attractive.

As we know, the gravitational force is given by:

[tex]\rm F = \dfrac{Gm_1m_2}{r^2}[/tex]

Where G is the gravitational constant.

m1 and m2 are masses.

r is the distance between the masses.

It is given that:

Boy 'a' and boy 'b' are pushing a heavy table in the west direction at the same time with 10 units of force each

The table will shift to the west side since both are applying 10 N of force to the same side, i.e., the west side, for a total net force of 10+10=20 N.

Total net force = 10 + 10 = 20 units

Thus, the net force acting on the object will be 20 units and the direction will be the same as the direction of force applied.

Learn more about the gravitational force here:

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please answer tell fast​

Answers

Step-by-step explanation:

After travelling 3/4 distance on the circular track, radii of the circle will make right angle and the displacement would be equal to the hypotenuse of this right triangle. Which by Pythagoras theorem is given as:

[tex]displacement \\ = \sqrt{ {400}^{2} + {400}^{2} } \\ = \sqrt{160000 + 160000} \\ = \sqrt{2 \times 160000} \\ = 400 \times 1.414 \\ = 565.6 \: m \\ \\ distance \\ = \frac{3}{4} \times circumference \: of \: circle \\ = \frac{3}{4} \times 2\pi \: r \\ = \frac{3}{4} \times 2 \times 3.14 \times 400 \\ = 6 \times 314 \\ = 1,884 \: m[/tex]

Find the volume of a locker that is 50 cm wide, 40 cm long, and 250 cm tall. V=lwh​

Answers

Answer:

56

Step-by-step explanation:

Answer:

its 56 i think but tell me if its right or no Arigatōgo

Step-by-step explanation:

17 more than the quotient of a number and 4

Answers

Answer:

x ÷ 4 + 17

Step-by-step explanation:

17 more than the quotient of a number and 4. You're adding 17 to the quotient of x and 4, or x divided by 4.

The expression "17 more than the quotient of a number and 4" can be written as:

(x / 4) + 17

In this expression, x represents the unknown number. We divide x by 4 to find the quotient of the number and 4, and then add 17 to it.

For example, if we substitute x = 12 into the expression, we would have:

(12 / 4) + 17 = 3 + 17 = 20

Therefore, the value of the expression "17 more than the quotient of a number and 4" depends on the specific value of x that is substituted into the expression.

Learn more about quotient here

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Find the product of two numbers whose sum is 11 and difference is 3??

Answers

Answer:28

Step-by-step explanation:hope it helps :)

-14+6b+7-2b=1+5b
someone help me with this please

Answers

Answer:

b= -8

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable. my answer is -8 but just multiply 5 by -8. and solve

-14+6b+7-2b=1+5b

-7+4b=1+5b

-1 -1

-8+4b=5b

-4b -4b

-8=b

I’m not really understanding this and could use some help.

Answers

Answer:

I believe the answer should be C

Prove tanAsinA + cosA = sec A

Answers

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

tanx = [tex]\frac{sinx}{cosx}[/tex] , sin²x + cos²x = 1, secx = [tex]\frac{1}{cosx}[/tex]

Consider left side

tanAsinA + cosA

= [tex]\frac{sinA}{cosA}[/tex] × sinA + cosA

= [tex]\frac{sin^2A}{cosA}[/tex] + cosA

[tex]\frac{sin^2A+cos^2A}{cosA}[/tex]

= [tex]\frac{1}{cosA}[/tex]

= secA = right side , thus proven

When negative five is subtracted from a number the result is 10. Find the number.
-5
15
05
-15

Answers

-15-5=10 that would be the answer

please help me, I cant faill!!!

Answers

Answer:

x2

Step-by-step explanation:

you multiply 1x2 to get 2 and multiple 3x2 to get 6

pls mark brainly :)) hope you have a good day

-(6k+5)
Need help simplify this expression plz

Answers

Answer:

-6k - 5

Step-by-step explanation:

Simplify: -6k + -5Simplify further: -6k - 5

I hope this helps!

If u simplify it would be -6k-5


What is the distance between the points (-8,-2) and (7, 6) ?
A 4.1
D 17
C 23
D) 289

Answers

Answer:

D. 17

Step-by-step explanation:

Trust me this one is correct :) Please put brainliest if it's true.

Answer:D)17

Step-by-step explanation:

Write an expression for “the difference of a number and ten”

Answers

Answer:

X-10

Step-by-step explanation: i dont really know what ur asking tho

Answer:

x - 10

Step-by-step explanation:

a number is used as a variable and "the difference" means subtraction

The probabilty of it raining on a given day is 3/8 what is the probabilty of it not raining?

Answers

Answer:

5/8

Step-by-step explanation:

If 3/8 IS raining, then the remaining 8ths is NOT raining. 8 - 3 = 5. So, 5/8 is NOT raining.

I hope this helps!

Answer:

5/8

Step-by-step explanation:

To find the probability of it not raining, subtract 3/8 from 1.

1 - 3/8

= 5/8

Since the probability of it raining is 3/8, this must mean that during the rest of the time, it will not rain.

So, the probability of it not raining is 5/8

2,000 students were surveyed about their summer plans. 13% of students stated they were going to get a job over the summer. How many students are working during the summer?

Answers

260 students

2000 times 0.13 is 260 or 13 percent of 200 is 260 students

Need Help!

A line has a slope of 4 and goes through the point (5,−2). What is the equation of this line in Standard Form?

−4x+y=18

4x+y=−18

−4x+y=−18

−4x+y=−22

Answers

Answer:

-4x+y=-22

Step-by-step explanation:

-4x +y= -22  is the equation of this line in Standard Form .

What is in slope-intercept form?

Y = mx + b, which defines a line, is an equation's slope-intercept form.When a line is graphed, its slope, m, and its point of intersection with the y-axis, b, also known as the y-intercept, are shown.To find answers for x, y, m, and b, utilize slope intercept form.

m = 4

the point =  (5, -2)

the equation of this line

          y - y₁ = m ( x - x₁)

          y - ( -2 ) = 4 ( x - 5 )

          y + 2 = 4( x - 5 )

           y + 2 = 4x - 20

            y = 4x - 20 - 2

            y = 4x - 22

          -4x +y= -22

Learn more about slope-intercept form

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f(x) = -2x^2 + 7 Find f(-5)

Answers

F(-5) = -2(-5)^2 + 7

= -2(25) + 7
= -50 + 7
= -43

Answer:

-2(-5)^2+7

-2(25)+7

-50+7

-43

2. If you can buy 6 books for $32.16 online, find the unit price of a book.

Answers

Answer: $5.36 per book

Answer:

$5.36 is the unit rate

Step-by-step explanation:

32.16/6=5.36

find the following
50%of20​

Answers

Answer:

10%

Step-by-step explanation:

you would just divide it by 2.

Answer:

10

Step-by-step explanation:

because 50% is half so the half of 20 when you break it down is 10 or if its a percent 10%

is -14n-7=7 true or false

Answers

-14n-7=7
add 7 to both sides
-14n=14
divide by -14 to both sides
n=-1
plug -1 to the equation and its true
7=7
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