Pls help I'm gonna give brainliest but just help pls I need to do this but I don't get it.
Ellen wants to purchase a book that is regularly priced at $18. The book is discounted 15%. She also needs to pay a 6% sales tax on the discounted price.

What is the total amount Ellen will pay for the book?

Answer:

[tex] 1.6 \times 10^8[/tex]

Step-by-step explanation:

[tex]5 \times 10^8 - 3.4 \times 10^8 \\ \\ =(5 - 3.4 ) \times 10^8 \\ \\ =1.6 \times 10^8[/tex]

Answer:

80%

Step-by-step explanation:

Answer:

80%

Step-by-step explanation:

This can be written algebraically as 24 = x of 30, where we have to find what percent of 30 is equal to 24. Of is the same as multiplication: 24 = x · 30  Then, solve for x. The answer is x = 0.8 and 0.8 as a percent is 80%.

Hope this helped! :)

Answer:

7

Step-by-step explanation:

2c/2 = 14/2

c = 7

Answer:

I didnt get what you mean maybe try to explian it another way

Step-by-step explanation:

Answer:

y=x^2

Step-by-step  explanation:

Answer:

A cardioid

Step-by-step explanation:

A cardioid is a curve in the shape of a heart traced by a point on the circumference of a circle as it rolls around a fixed circle of the same radius.

The equation of vertical cardioid is [tex]r=a[/tex] ± [tex]a\sin \theta[/tex]

Given the polar curve is [tex]r=[/tex] [tex]1+[/tex] 4 [tex]\sin \theta[/tex]

This is an equation of vertical cardioid.

So, it represents a cardioid.

Answer:

C - a limaçon with an inner loop

Step-by-step explanation:

If you have a graphing calculator, use it to plug in the equation.

Based on what you have learned, you will recognize the graph is C

The angle is a 90 degree angle.

Answer:

80degrees

Step-by-step explanation:

Answer:

2700ft cubed

Step-by-step explanation:

Answer:

Both A and B are correct because a negative divided by a negative makes a positive.

Hence, the expression which are equivalent to [tex]\frac{c}{d}[/tex] is both (A) and (B).

What are the expressions?

An expression in math is a sentence with a minimum of two numbers or variables and at least one math operation.

Here both the options (A) and (B) are correct because negative got cancel and it would be like the given expression.

Hence, the expression which are equivalent to [tex]\frac{c}{d}[/tex] is both (A) and (B).

To know more about the expression

https://brainly.com/question/24242989

#SPJ2

Answer: Your answer is 1/35 or 35

Step-by-step explanation:

Answer:

[tex]h=\frac{h_{m}-h_{t}+44.145}{3}t-4.905t^{2}+h_{t}[/tex]

(if the heights are measured in meters)

Step-by-step explanation:

In order to solve this problem we will need to first draw a diagram of the situation (see attached picture) and then, make use of the following physics equation:

[tex]y_{f}=\frac{1}{2}at^{2}+v_{0}t+y_{0}[/tex]

where:

[tex]y_{f}[/tex]=height of the object at a given time t

a=acceleration due to gravity

t=time

[tex]v_{0}[/tex]=initial velocity of the object

[tex]y_{0}[/tex]=initial height of the object.

we know most of this data, except for the height of theh object at the given time t and the initial velocity of theh object. We can make use of the given time to write the velocity in terms of the height of thte tree and the height of the monolith.

So let's substitute the values we know so far:

[tex]h=\frac{1}{2}(-9.81)t^{2}+v_{0}t+h_{tree}[/tex]

the problem tells us that after 3 seconds, the object reaches the height of the monolith, so let's do the substitution:

[tex]h_{monolith}=\frac{1}{2}(-9.81)(3)^{2}+v_{0}(3)+h_{tree}[/tex]

we can now solve this equation for the initial velocity, so we get:

[tex]h_{monolith}-h_{tree}=-44.145+3v_{0}[/tex]

[tex]h_{monolith}-h_{tree}+44.145=3v_{0}[/tex]

so:

[tex]v_{0}=\frac{h_{monolith}-h_{tree}+44.145}{3}[/tex]

and now we can substitute this back into the original formula to get the equation that represents the height of the coconut above the ground after t seconds:

[tex]h=\frac{h_{m}-h_{t}+44.145}{3}t-4.905t^{2}+h_{t}[/tex]

Answer:

49 cents per ounce

Step-by-step explanation:

Answer:

y=3/7x+2

Step-by-step explanation:

can i have brainliest?

Answer:

will u b my frend

Step-by-step explanation:

Answer:

Scalene, Acute

Step-by-step explanation:

scalene because the sides are of different length, and acute because it's less than 90°

Answer:

120?

Step-by-step explanation:

Let's solve the problem step by step: Let's assume the other number is x. According to the problem, the sum of the two numbers is 240. so we can write the equation as: [tex]x + y = 240[/tex]

To find the value of x, we need to substitute the value of y into the equation. Since y is given, we can substitute it. [tex]x + y = 240 x + y = 240 x + y + (-y) = 240 + (-y) x = 240 - y[/tex] Now, we have an equation expressing x in terms of y. To determine the value of x, we need to know the value of y.

Without that information, we cannot calculate the value of x specifically. However, based on the information given, we can conclude that the value of x will be equal to 240 subtracted by the value of y.

To know more about equation visit:

https://brainly.com/question/33622350

#SPJ2

Answer:

5

Step-by-step explanation:

Use the Pythagorean Theorem

a²+b²=c² plug in the info you have

a²+12²=13² (c is always the side opposite from the right angle)

Solve for a

a²+144=169

   -144  -144

a²=25   take the square root of both sides

√a²=√25

a=5

An

IT WOULD BE 50 CENTS PER PEN

Step-by-step explanation:

Answer:

It's A

Step-by-step explanation:

Line e parallel to line g. Therefore, option A is the correct answer.

Parallel lines are those lines that are equidistant from each other and never meet, no matter how much they may be extended in either directions.

Given that, in a plane line e is parallel to line f line f is parallel to line g and line h is perpendicular to line e.

Since, e║f, f║g

So, e║g

Therefore, option A is the correct answer.

To learn more about parallel lines visit:

https://brainly.com/question/16701300.

#SPJ7

Answer:

37.5%

Step-by-step explanation:

Answer:

37.5%

Step-by-step explanation:

Answer:

40% I believe

Step-by-step explanation:

I searched it up

Answer:

Sometimes

Step-by-step explanation:

I’ll give you an example so you can understand:

Let’s say x is 4. So plug 4 into the problem:

|4|=4  →  This is a very true statement, where the absolute value of 4 is equal to 4.

Now, let’s say x is -7. So plug -7 into the problem:

|-7|=-7  →  This is a false statement because it’s saying that the absolute value of -7 is -7 which is very untrue.

So |x|=x only works for positive numbers, but not negative numbers. Therefore, |x|=x is the absolute value of x sometimes.

Hope this helps and answers your question! :)

Answer:

$4

Step-by-step explanation:

let t represent teddy bear and v represent vase, then

2t + 3v = 27 → (1)

3t + 2v = 30.5 → (2)

Multiplying (1) by 3 and (2) by - 2 , then adding will eliminate t, that is

6t + 9v = 81 → (3)

- 6t - 4v = - 61 → (4)

Add (3) and (4) term by term to eliminate t, that is

5v = 20 ( divide both sides by 5 )

v = 4

The cost of the flower vase is $4

Answer:

It is going to be $4.00

Step-by-step explanation:

Hope this helped have an amazing day!

Answer:

a

Step-by-step explanation:

because its parallel while d is perpendicular and b and c are diagonal

Answer:2010 +2011+2010=6021

6+4 =11

Step-by-step explanation:add then you divide

Answer:

A.) 40.506 cm is the answer

Answer:

A. 40.506

Step-by-step explanation:

r=6.45

c= 2*3.14*6.45

c=40.506

Answer:

Note: The full question is attached as picture below

a) Hо : p = 0.71

Ha : p ≠ 0.71

p = x / n

p = 91/110

p = 0.83.

1 - Pо = 1 - 0.71 = 0.29.

b) Test statistic = z

= p - Pо / [√Pо * (1 - Pо ) / n]

= 0.83 - 0.71 / [√(0.71 * 0.29) / 110]

= 0.12 / 0.043265

= 2.77360453

Test statistic = 2.77

c) P-value

P(z > 2.77) = 2 * [1 - P(z < 2.77)] = 2 * 0.0028

P-value = 0.0056

∝ = 0.01

P-value < ∝

Reject the null hypothesis.  There is sufficient evidence to support the researchers claim at the 1% significance level.

Answer:

subtract 1 from both sides

cube both sides

Step-by-step explanation:

nhfbgdvzfsdfexgrdtbfvdcfewzsxrdfcgvhjyvtfhcdgrxesrgdfcgvh