Betty bought two bags full of books at an annual library book sale. If she
pays a total of $12.90 for both bags, of which $0.90 is tax, how much did
each bag of books cost?

Answer:

c.

Step-by-step explanation:

p/4.5 = 6.1

to isolate the variable do the opposite action

p/4.5 = 6.1

as p is divided by 4.5, you must multiply both sides by 4.5

p/4.5 ×4.5 = 6.1 × 4.5

p = 27.45

Answer:

A. \(-\frac{1}{9}\)

Step-by-step explanation:

-(\(3^-^5\))(\(3^3\)) = \(-\frac{1}{9}\)

please let me know if I am wrong.

hope this helped.

Answer:

A

Step-by-step explanation:

\(-\left(3^{-5}\right)\left(3^3\right)\)

\(\mathrm{Apply\:exponent\:rule}:\quad \:a^b\cdot \:a^c=a^{b+c}\)

\(3^{-5}\cdot \:3^3=3^{-5+3}\)

= \(-3^{-5}\cdot \:3^3\)

\(\mathrm{Add/Subtract\:the\:numbers:}\:-5+3=-2\)

\(=-3^{-2}\)

= \(\mathrm{Apply\:exponent\:rule}:\quad \:a^{-b}=\frac{1}{a^b}\)

\(3^{-2}=\frac{1}{3^2}\)

= \(=-\frac{1}{3^2}\)

\(3^2=9\)

= \(=-\frac{1}{9}\)

Answer:

A and B have the same solution

Step-by-step explanation:

A:

25/2=5x

25=10x

25/10=x

2.5=x

B:

2x-14+6=-3

2x-8=-3

2x=5

x=2.5

C:

5x+7-21x=-121

-16x=-128

x=8

Answer:

\( - 2 \frac{3}{5} \div \frac{3}{5} = - \frac{13}{5} \times \frac{5}{3} = - \frac{13}{3} = - 4 \frac{1}{3} \)

\(2 \frac{1}{4} \div \frac{3}{4} = \frac{9}{4} \times \frac{4}{3} = 3\)

\( - \frac{10}{17} \div ( - \frac{15}{17} ) =\)

\( - \frac{10}{17} \times ( - \frac{17}{15} ) = \frac{2}{3} \)

\( 2.75 \div ( - 2.2) = \)

\( 2 \frac{3}{4} \div ( - 2 \frac{1}{5} ) = \)

\( \frac{11}{4} \div ( - \frac{11}{5} ) = \frac{11}{4} \times ( - \frac{5}{11} ) = - \frac{5}{4} = - 1.25\)

3 ⇒ 2 (1/4) / (3/4)

-1.25 ⇒ 2.75 / (-2.2)

2/3 ⇒ (-10/17) / (-15/17)

-4 1/3 ⇒ -2 (3/5) / (3/5)

Hope my answer helps you✌️

Mark BRAINLIEST

Answer:

you need to find the vertex, y-intercept, x-intercept, etc in order to create the equation.

Step-by-step explanation:

standard form for quadratic equations should look like this:

f(x)= ax^2+bx+c

(The graph is really blurry, try posting just the graph so I can see it closer if you still need help setting up the equation.)

Answer: 2.25

Step-by-step explanation:

8/3=6/x

To solve this problem, we can set up the proportion shown above. Then, we can solve it using cross-products.

3×6=18

8×x=18

x=18/8

x=2.25

For more resources on scale drawings, check out "What is a Scale Drawing?" by Virtual Nerd.

All the best on your homework!

Answer:
answer is going to be

4 patterns

5 needles

2 balls of yarn

and 12 stitch holders

hope this helped u bro

Answer:

1.) $59.30

2.) $533,700

Step-by-step explanation:

Find Unit Price:

237,000/4000= 59.30

Multiply By Unit Price:

59.30x9,000= 533,700

Hey there! :)

Answer:

Exponential.

Step-by-step explanation:

Exponential is the best choice because the graph is increasing geometrically. This means that the parent function of the equation looks like this:

\(f(x) = a(b)^{x}\)

The shape of this equation will resemble an curve that has a horizontal asymptote that the graph will not intersect.

We can also narrow down each choice:

a) Quadratic. Incorrect because the graph pictured is not a parabola.

b) Linear. Incorrect because the rate of change is not constant, and the graph is not a straight line.

c) Most probable answer.

d) Incorrect.

Answer:

(-2,3) is the coordinate after it is relfected

Step-by-step explanation:

Answer:

The first option, V ≈ 1607.7 in²

Step-by-step explanation:

Find the volume of the given cylinder.

\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)

Given:

r = 8 in

h = 8 in

π = 3.14

Find:

V = ?? in³

\(\hrulefill\)

Now solving,

Substitute the given values into the formula:

=> V = (3.14)(8)²(8)

Using a calculator to simplify:

=> V = 1607.68 in²

Rounded to the nearest tenth:

∴ V ≈ 1607.7 in²

Thus, the first option is correct.

Answer:

A

Step-by-step explanation:

\(\huge\underline{\underline{\boxed{\mathbb {SOLUTION:}}}}\)

▪ \(\longrightarrow \sf{10.24}\)

▪ \(\longrightarrow \sf{16}\)

We start by obtaining it:

\(\longrightarrow \sf{\dfrac{10.24}{16} = 0.64}\)

Therefore, we are asked how many significant figures 0.64 has. The answer is 2. In this case, the significant digits are 6 & 4.

\(\huge\underline{\underline{\boxed{\mathbb {ANSWER:}}}}\)

\(\large \bm{B. \: 2}\)

Answer:

To add 232 and 578, Zoey should start by placing the smaller addend, which is 232, on the number line. She can then add the larger addend, which is 578, by counting up from 232.

Here's how Zoey can do it:

Therefore, Zoey should place 232 on the number line to start adding 232 and 578.

Zoey should place the addend 232 on the number line to start.

A number line is a straight line drawn horizontally where the numbers are placed at an equal intervals.

Number line has numbers 232 and 578 marked at different points.

In order to find the sum of these two addends, we have to place the smaller addend at the start.

Here 232 is the smaller addend

578 is the larger addend.

Start with the smaller one, 232.

Then add the larger addend to it.

Hence the addend that should be started with is 232.

Learn more about Number lines here :

https://brainly.com/question/13425491

#SPJ2

The length of segment NB is 0.833

From the question, we have the following parameters that can be used in our computation:

The rectangle

The area of the rectangle is

Area = (20 + x) * 10

The area of MNBC is

Area  = 1/2 * 10 * (x + 20 + x - 5)

Area  = 5(2x + 15 )

The area of the quadrilateral MNBC is 40% of the total area of the rectangle

So, we have

5(2x + 15) = 40% * (20 + x) * 10

5(2x + 15) = 4* (20 + x)

When evaluated, we have

x = 0.833

Read more about area at

https://brainly.com/question/31752704

#SPJ1

Answer:

X=1

Step-by-step explanation:

The total area of the rectangle is 20x10=200

so the area of MNBC is: 40%x200=80

MC= 20-5=15

so (x+15).10/2=80 (according to the trapezoidal area formula)

x=1

so the answer is 1

To learn more about the Trapezoidal area formula

https://brainly.com/question/31395425?referrer=searchResults

Answer:

So, area of the semicircle = 18π mm.

Step-by-step explanation:

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

The answer is The distance between P and T on the coordinate grid is 25 units.

You can see that point P is on (-10,15) and point T is on (15,15). So we'll just ignore the y-values. We look at the -10 and the 15, if we add those to (but ignore the negative on the -10) we will get 25 units.

Answer:

hello

Step-by-step explanation:

The required probability that William worked on last year was an anniversary party is 1/ 36.

As mentioned in the quesiton,
William is a very busy professional DJ. Last year, he worked at 10-anniversary parties and 26 other events.

Probability can be defined as the ratio of favorable outcomes to the total number of events.

Here,
Total sample space = 26 + 10 = 36
Number of favorable outcomes = 1
the probability that William worked on last year is was an anniversary party,
= Favorable outcome/sample space
= 1 / 36

Thus, the required probability that William worked last year is 1/ 36.

Learn more about probability here:

brainly.com/question/14290572

#SPJ2

Answer:

1)y=3x-2

2)y=x-4

Step-by-step explanation:

1)As we know slope intercept from

y=mx-b

y=3/1x-2

y=3x-2

2)y=mx-b

y=1x-4

  y=x-4

Answer:

√x

Step-by-step explanation:

area = side × side = side²

√area = √(side²)

side = √area

area = x

side = √x

Answer: √x

Answer:

√x

Step-by-step explanation:

Find the length of a side of a square if its area is: x units²

Area = l²

l = √Area

so your answer is

√x

Answer:

I only did the first page because u need to read a text book to answer the next page.

Let's assume that X is the extra amount added to $5, and Y is the overall bill.

X+$5=Y

Answer:

31.99 sorry if wrong

Step-by-step explanation:

Answer:

8 x ( 7 + 3 ) = (8 x 7) + ( 8 x 3)

OR (if you want to solve)

80

Step-by-step explanation:

This equation represents the distributive property.

When there is a number on the outside of parentheses we can multiply it by every number within the parentheses.

So when we solve this, it can look like this:

8 x (7 + 3)

(8 x 7) + (8 x 3)

(56) + (24)

= 80

I hope this helps!!

- Kay :)

Step-by-step explanation:

x = total number

3 % of x   is  354 items      3% is .03 in decimal

.03x = 354

x = 354 / .03 = 11800 total items

Answer:

f(x)=1/16(x-2)^2+2

Step-by-step explanation:

The Equation can be written like this:

f(x) = 1/(4p)(x -h)^2 +(k-p)

where (h, k) is the focus, and p is half the distance between focus and directrix. Here, (h, k) = (2, 6) and p=(6-(-2))/2 = 4. So the equation is ...

 f(x) = 1/16(x -2)^2 +2