Tom sold half of his comic books and then bought 8 more. He now has
18. How many did he begin with?

Answers

Answer 1

Answer:

20

Step-by-step explanation:

18 - 8 = 10

10 x 2 = 20

check:

20 divided by 2 = 10

10 + 8 = 18

answer: 20


Related Questions

DUE soon! For an unknown parent function f(x), write a function g(x) that is:
vertically stretched by a factor of 2,
shifted up 5 units, and
shifted right 4 units.
Explain how your function accomplishes these transformations.
See I don't know if you can choose whichever parent function to start off.

Answers

Answer and Step-by-step explanation:

The parent function is just f(x) = x.

See, the transformations equation of a parent function is as follows:

f(x) = a(x - h) + k

Where:

a is the scaling factor,

h is the horizontal (left and right) changing factor, and

k is the vertical (up and down) changing factor.

So, now we apply the transformations to this parent function by writing it in function g(x).

Vertically stretch by factor of 2: g(x) = 2x

Shifted up 5 units: g(x) = 2x + 5

Shifted left 4 units: g(x) = 2(x - 4) + 5

g(x) = 2(x - 4) + 5 is the function.

This function accomplishes these transformation by having 2 be the scale factor, 4 be the horizontal shift, and 5 be the the vertical shift.

#teamtrees #PAW (Plant And Water)

this is my last question

Answers

Answer: B

Step-by-step explanation:because my teacher said she having trouble

Layla and Jacob are taking a photography class. Layla took twice as many photos as Jacob, and Jacob took 10 fewer photos than Layla. This situation can be represented with the system y = 2x and y = x +10, which can be used to find the number of photos taken by Jacob x and the number of photos taken by Layla y. Solve using systems of equations by substitution

Answers

Answer:

x = 10; y = 20

Step-by-step explanation:

y = 2x

y = x +10

Substitute y of the second equation with 2x.

2x = x + 10

x = 10

y = 2x = 2(10)

y = 20

Answer: x = 10; y = 20

Harley invested $6,300 into an account that earns 3.5% simple interest. What is the total balance of the account after 5 years

Answers

Answer:

$7402.50 I think

Step-by-step explanation:

3.5(5)= 17.5 percent

175/1000* 6300= 17.5*63= 1102.5

6300+ 1102.5=  7402.5

if my answer helps please mark as brainliest.

Please help I urgently need it, I’ll give brainliest to whoever answers and 20 points!

Answers

Answer:

92.3

Step-by-step explanation:

Home to gas station: (0,0) to (6,2) = 6.3

Gas station to friends house: (6,2) to (4,-7) = 9.2

Freinds house to movie theatre: (4,-7) to (-7,-3) = 11.7

Movie theatre to ice cream: (-7,-3) to (-8,2) = 5.1

Ice cream to park: (-8,2) to (7,7) = 15.8

Park to friends house: (7,7) to (4,-7) = 14.3

Friends house to grocery store: (4,-7) to (-4,8) = 17

Grocery store to home: (-4,8) to (0,0) = 8.9

Add them together =

Compare the original trapezoid and the enlarged trapezoid.

Trapezoid A B C D has side lengths 4 centimeters, 2 centimeters, 5 centimeters, 2 centimeters. Trapezoid W X Y Z has side lengths 10 centimeters, 5 centimeters, 12.5 centimeters, 5 centimeters.

What is the perimeter of trapezoid ABCD?


What is the perimeter of trapezoid WXYZ?


What is the scale factor for this enlargement?

Answers

Answer:

13, 32.5, 2.5

Step-by-step explanation:

Answer:

The answer is in the photo

Step-by-step explanation:

An agricultural company is trying to decide which type of fertilizer to use on its crops. The company concerned with the average yield on its crops as well as the variance of their yields. In a sample of 41 different fields with using fertilizer A, the average crop yield per acre is 185 tons with a standard deviation of 35 tons. In a separate sample of 61 different fields using fertilizer B, the average crop yield is 175 tons with a standard deviation of 28 tons. When testing the hypothesis that there is no difference between the average yields using the different fertilizers, if the test statistic is 1.53 and the critical value is 2.57 then what is your conclusion concerning the null hypothesis?

Answers

Answer:

We do not reject the null

Step-by-step explanation:

Given that :

Sample size, n = 41

Test statistic ; Zstatistic ;= 1.53

Critical value ; Zcritical ; = 2.57

The null hypothesis H0 ;

H0: μ1 - μ2 = 0

Alternative hypothesis, H1 ;

H1: μ1 ≠ μ2

Decision region :

Reject Null ; if |Zstatistic ≥ Zcritical|

Zstatistic > Zcritical

Result :

1.53 < 2.57

Zstatistic < Zcritical

Hence, we do not reject the null ; there is no significant evidence that there is difference in the average yield of the two samples.

find the length of the missing side 19 yd 50yd pythagorean theorem

Answers

Answer:

the answer is about 53.5

Step-by-step explanation:

ASAP HW HELP
if you don’t know answer don’t even comment

Answers

Answer:

y=1/4x-3

Step-by-step explanation:

Two angles are supplementary. One angle measures (3x+8) and the other measures (6x+64) what is the value of X?

Answers

3x+8+6x+64=180 (definition of supplementary angles)
9x+72=180 (Simplify)
9x=108 (Subtraction property of equality)
x=12

HELP ASAP ILL GIVE BRAINLIEST

Write an expression for

The product of eleven times a number less than 12

11(n - 12)


12n - 11


11n - 12


12 - 11n

Answers

the 3rd one, dear. hope this helped.

Answer:

11n - 12

Step-by-step explanation:

The answers for the March 22 Recording Check

1. Solve the following one-step equation.

x+5=−7

x = -12 This is the correct answer

x = 2

2.  An expression does NOT have an equal sign

    The answer would be True

This graph represents a linear function.
Enter an equation in the form y=mx+b that represents the function
described by the graph.
*Note: Uses only numbers and symbols, no spaces. If there is a fraction,
10
1
make it improper and use parentheses (ie. y =
72+ z will be typed
as y=(10/7)x+(1/2)]
Type your answer

Answers

Answer:

y=1x-3

Step-by-step explanation:

An age a minus 2 plus a number,n Evalvate it a=10 n=4

Answers

i think its 12 but i dont know

Describe the zeros of the graphed function.



A.
The function has three distinct real zeros.
B.
The function has two distinct real zeros and two complex zeros.
C.
The function has four distinct real zeros.
D.
The function has one distinct real zero and two complex zeros.

Answers

Answer:

A

Step-by-step explanation:

it intersects x axis at three points.

if my answer helps please mark as brainliest.

The answer is letter A) the function has tree distinct real zeros

In a group of 84 kids, three-sevenths bought their lunches. Of those who bought their lunches, 9 got a slice of pizza. What is the fraction of the students who bought their lunches got a slice of pizza. Write your fraction in simplest form.

Answers

3/7x84=36

Ans: 9/36=1/4

FOR THE SMART MATH PEOPLE
WILL GIVE BRAINLIEST

Answers

This figure shown is NOT a square because a square has all angles are 90º.

It is a rhombus and a parallelogram because they both have a parallel sides(At least 2). NOW GIVE ME BRAINLIEST!!!!

The area of the triangle below is 8.91 square inches. What is the length of the base?
2.2 in

Answers

Answer:

8.1

Step-by-step explanation:

Area of a triangle = ½ × base × height = Area

Rearranged =

area/1/2xheight

The base is the length.

8.91/1/2x2.2

=8.1 inches

Find the area of each of the following

Answers

Answer:

The area of this shape is 252.

Step-by-step explanation:

Cut the right piece of the shape into a triangle of 90 degrees, which makes the shape divided into 2 triangles and 1 rectangle.

9 x 13 = 117 (rectangle part)

15 x 9 = 135, 135/2 = 67.5

15 x 9 = 135, 135/2 = 67.5

67.5 + 67.5 + 117 = 252

simplifying the ratio of 65:91​

Answers

Answer:

3:5

Step-by-step explanation:

divide both sides by 13

Simplify (-9p+7)-(-9p+3)

Answers

[tex]\tt{}( - 9p + 7) - (9p + 3)[/tex]

[tex]\tt{} - 9p - 7 + 9p + 3[/tex]

[tex]\tt{}7 - 3[/tex]

[tex]\tt{}4[/tex]

Work out the difference between 77.5 and 2.27.

Answers

Answer:

75.23 is the answer for 77.5-2.27

Can someone give me the answer and explain it to me? Pls, I’ll mark brainiest.

Answers

Answer is 28%

you need to find the percentage of the store's profit. So the store has 10 jeans = $ 180. That means each jeans cost 18, but it sells for 24.30. So you find the profit percentage

Which graph shows the line y = 4x - 2?

Answers

Answer:

Line A

Step-by-step explanation:

Line A is the blue line with the y-intercept of (0,-2) and positive slope of 4.


Solve 3(4x + 5) = 33
You may use the flowchart to help you if you wish.

Answers

Answer:

This is so simple omg

Expand ”4x+5” out so...

12x + 15 = 33

12x = 33 - 15 = 18

12x = 18

x = 1.5

Answer:

Step-by-step explanation:

I NEED HELP PLZZZ!!!!!!

Answers

Pretty sure the answer is D, if you simplify it, you will have 1/5

Answer:

B.

Hope that helps!  

Step-by-step explanation:

In the population of young children eligible to participate in a study of whether or not their calcium intake is adequate, 52% are 5 to 10 years of age and 48% are 11 to 13 years of age. For those who are 5 to 10 years of age, 17% have inadequate calcium intake. For those who are 11 to 13 years of age, 54% have inadequate calcium intake. Use Bayes's rule to find the probability that a child from this population who has inadequate intake is 11 to 13 years old.

Answers

Answer:

0.7457 = 74.57% probability that a child from this population who has inadequate intake is 11 to 13 years old.

Step-by-step explanation:

Bayes Theorem:

Two events, A and B.

[tex]P(B|A) = \frac{P(B)*P(A|B)}{P(A)}[/tex]

In which P(B|A) is the probability of B happening when A has happened and P(A|B) is the probability of A happening when B has happened.

In this question:

Event A: Inadequate intake

Event B: Is 11 to 13 years old.

48% are 11 to 13 years of age.

This means that [tex]P(B) = 0.48[/tex]

For those who are 11 to 13 years of age, 54% have inadequate calcium intake.

This means that [tex]P(A|B) = 0.54[/tex]

Probability of inadequate calcium intake:

0.17 of 0.52(5 to 10 years old)

0.54 of 0.48(11 to 13 years old). So

[tex]P(A) = 0.17*0.52 + 0.54*0.48 = 0.3476[/tex]

Find the probability that a child from this population who has inadequate intake is 11 to 13 years old.

[tex]P(B|A) = \frac{P(B)*P(A|B)}{P(A)} = \frac{0.48*0.54}{0.3476} = 0.7457[/tex]

0.7457 = 74.57% probability that a child from this population who has inadequate intake is 11 to 13 years old.

Which of the following is equivalent to

X^2 - 8x - 7 =0

A.) (x-8)^2 = 15

B.) (x-4)^2 = 15

C.) (x-8)^2 = 23

D.) (x-4)^2 = 23

Answers

Answer: it will be D

Step-by-step explanation: if You graph them you will get the same coordinate plates

Fifty people put there name
into a two different drawings
(30 males and 20 females).
One drawing is for an iPad and
the other is for a flat screen
TV. What is the probability
that a female will win the iPad
and a male win the flat
screen?
7.SP.8

Answers

Answer:Male 60% Female 40%

How many 0.5 ribbons will be cut from a 8 meter​

Answers

Answer:

16 ribbons

Step-by-step explanation:

Given

[tex]Length = 8\ meter[/tex]

[tex]Ribbon\ Length = 0.5\ meter[/tex]

Required

Determine the number of ribbons

This is calculated as:

[tex]n = \frac{Length}{Ribbon\ Length}[/tex]

[tex]n = \frac{8m}{0.5m}[/tex]

[tex]n = \frac{8}{0.5}[/tex]

[tex]n = 16[/tex]

Can y’all help me on question 19?!

Answers

Answer:

Its D

Step-by-step explanation:

That is D
Just my multiplying the 2 five times and since it asks you in exponential form you do 2^5 so D will be you’re answer
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