# Please help with problem 8. (ONLY IF YOU KNOW)

QUESTION POSTED AT 10/10/2019 - 07:35 PM

QUESTION POSTED AT 10/10/2019 - 07:35 PM

The answer for the question is 2.49 times 3 and add that to 3.19 times 2 and add 4.99 times 4 which equals $33.81

A. total cost of all the purchases

You can't calculate the sales tax on the sheet music or the change for $50 he would have received (which requires subtracting the total cost from $50) until you know how much the sheet music cost total.

The B) and C) options aren't relevant to the problem. You're trying to find the amount of change he gets after paying the total cost for all the sheet music + the tax on that.

You can't calculate the sales tax on the sheet music or the change for $50 he would have received (which requires subtracting the total cost from $50) until you know how much the sheet music cost total.

The B) and C) options aren't relevant to the problem. You're trying to find the amount of change he gets after paying the total cost for all the sheet music + the tax on that.

ANSWERED AT 17/10/2019 - 09:13 AM

QUESTION POSTED AT 17/10/2019 - 09:13 AM

Hey there!

In order to solve this problem, you'll want to combine like terms. You can do this by cancelling out terms in your equation and combining them with the similar terms (for example, numbers with no unknown term can be combined, numbers with the same unknown term can be combined, etc.)

To cancel out terms, you will add or subtract (and eventually multiply or divide) to get the term on one side to zero. You will then complete what you just did to cancel out the term on the other side. See below:

–7 – 7p = 3p + 23

+ 7 + 7

–7p = 3p + 30

+7p +7p

10p + 30

10p + 30 will be your simplified equation. There's no wrong way to combine like terms, just be careful to double check whether you should add or subtract.

After that, all you need to do is solve for the term p. After you get rid of all of the terms on one side, that side will be equal to zero. So, you just need to find the number that will make your equation equal zero.

10p + 30 = 0

–30 –30

10p/10 = –30/10

p = –3

Hope this helped you out! :-)

In order to solve this problem, you'll want to combine like terms. You can do this by cancelling out terms in your equation and combining them with the similar terms (for example, numbers with no unknown term can be combined, numbers with the same unknown term can be combined, etc.)

To cancel out terms, you will add or subtract (and eventually multiply or divide) to get the term on one side to zero. You will then complete what you just did to cancel out the term on the other side. See below:

–7 – 7p = 3p + 23

+ 7 + 7

–7p = 3p + 30

+7p +7p

10p + 30

10p + 30 will be your simplified equation. There's no wrong way to combine like terms, just be careful to double check whether you should add or subtract.

After that, all you need to do is solve for the term p. After you get rid of all of the terms on one side, that side will be equal to zero. So, you just need to find the number that will make your equation equal zero.

10p + 30 = 0

–30 –30

10p/10 = –30/10

p = –3

Hope this helped you out! :-)

ANSWERED AT 17/10/2019 - 09:08 AM

QUESTION POSTED AT 17/10/2019 - 09:08 AM

**Answer:**

The midpoints of the EF is (2a,a) .

**Step-by-step explanation:**

Definition of midpoints.

The midpoint is the point lie in middle of a line segment. It is equidistant from both endpoints .

Formula

Quadrilateral EFGH has coordinates E(a, a), F(3a, a), G(2a, 0), and H(0, 0).

Now find out the midpoints of the E(a, a) and F(3a, a) .

Midpoints of EF = (2a,a)

Therefore the midpoints of the EF is (2a,a) .

ANSWERED AT 17/10/2019 - 09:01 AM

QUESTION POSTED AT 17/10/2019 - 09:01 AM

ANSWERED AT 17/10/2019 - 08:54 AM

QUESTION POSTED AT 17/10/2019 - 08:54 AM

6 quarters and 2 nickels

ANSWERED AT 17/10/2019 - 08:50 AM

QUESTION POSTED AT 17/10/2019 - 08:50 AM

You can use functions to slove real world problems by saying if some thing cost 2 dollar you would have 1 thing

ANSWERED AT 17/10/2019 - 08:21 AM

QUESTION POSTED AT 17/10/2019 - 08:21 AM

Any negative sign under a radical is characterized as i, being imaginary since it is not possible. So you are therefore left with 8/16 which is equivalent to 1/2 minus the imaginary number of i

ANSWERED AT 17/10/2019 - 08:13 AM

QUESTION POSTED AT 17/10/2019 - 08:13 AM

**Answer:**

**Step-by-step explanation:**

Given is a differential equation as:

We can solve this by separation of variables method

To find C:

Given y(0) =4

Substitute x=0 and y =4

sin inverse of 4 = C

But sin inverse is valid only for values between -1 and 1

Hence C is not a real value

No solution for this.

ANSWERED AT 17/10/2019 - 08:07 AM

QUESTION POSTED AT 17/10/2019 - 08:07 AM

Use trigonometry.

tan30° = perpendicular / base

Here for angle 30° , x is perpendicular while 10 is the base.

tan30° = 1/√3

1/√3 = x/10

x = 10/✓3

By rationalising

x = 10√3/3

Hope This Helps You!

tan30° = perpendicular / base

Here for angle 30° , x is perpendicular while 10 is the base.

tan30° = 1/√3

1/√3 = x/10

x = 10/✓3

By rationalising

x = 10√3/3

Hope This Helps You!

ANSWERED AT 17/10/2019 - 07:14 AM

QUESTION POSTED AT 17/10/2019 - 07:14 AM

**Answer: **

**The correct option is C). p + c = 7**

**Step-by-step explanation:**

Let number of acres available for peas = p acre

And number of acres available for carrot = c acre

Now, One acre of peas make $2000

And one acre of carrot makes $1000

So, **to make a total amount of $7000, the required equation is : **

**2000p + 1000c = 7000**

and **total available acres of land for planning the crops = 7 acres**

**⇒ p + c = 7**

**Hence, the equation of the problem is : 2000p + 1000c = 7000 with subject to the constraints : p + c = 7**

**Therefore, The correct option is C). p + c = 7**

ANSWERED AT 17/10/2019 - 07:06 AM

QUESTION POSTED AT 17/10/2019 - 07:05 AM

It helps if you have an example, like f(x) = 2x+3

What you typically do, is:

- draw xy axis, label them (ie., 1,2,3,4 along both axes)

- calculate the f(x) values for several x (e.g., -2, 0, 1, 3, doesn't matter).

- plot the calculated values as points. The calculated f(x) is your y value.

- sketch a smooth line through the points. It helps if you know in advance if the line is going to be straight or curved.

- The more points you calculate, the more accurate your graph will be

What you typically do, is:

- draw xy axis, label them (ie., 1,2,3,4 along both axes)

- calculate the f(x) values for several x (e.g., -2, 0, 1, 3, doesn't matter).

- plot the calculated values as points. The calculated f(x) is your y value.

- sketch a smooth line through the points. It helps if you know in advance if the line is going to be straight or curved.

- The more points you calculate, the more accurate your graph will be

ANSWERED AT 17/10/2019 - 07:03 AM

QUESTION POSTED AT 17/10/2019 - 07:03 AM

The area of a rhombus is the product of the diagonals divided by 2. In this question, the diagonals are given, so that's really easy. Let's convert the measures to meters, that'll help for the final area calculation:

Area of one rhombus: (0.52x0.30)/2 = 0.078 m²

In 60 m², you can fit 60/0.078 tiles. That's 769.23, rounded to 770 since you'll have to cut up the last tile.

Area of one rhombus: (0.52x0.30)/2 = 0.078 m²

In 60 m², you can fit 60/0.078 tiles. That's 769.23, rounded to 770 since you'll have to cut up the last tile.

ANSWERED AT 17/10/2019 - 07:03 AM

QUESTION POSTED AT 17/10/2019 - 07:03 AM

You are referring to:

You can solve your problem by calculating

and then subtracting the first bit:

So 138075 - 190 = 137885

You can solve your problem by calculating

and then subtracting the first bit:

So 138075 - 190 = 137885

ANSWERED AT 17/10/2019 - 07:03 AM

QUESTION POSTED AT 17/10/2019 - 07:03 AM

The key to this type of question is to look at the graph and see if there's any useful points or properties you can notice to check against the various functions they give you in the choices. My eye tells me that when x=2 the graph of the function is 0, so maybe start there to narrow down your choices.

ANSWERED AT 17/10/2019 - 06:06 AM

QUESTION POSTED AT 17/10/2019 - 06:06 AM

Oh ok I am in middle school how would I know

ANSWERED AT 17/10/2019 - 05:47 AM

QUESTION POSTED AT 17/10/2019 - 05:47 AM

I searched for an image of a golden rectangle. I also found a similar question with the given choices:

a) CDEF is a square.

b)The length of CDEF is twice its width.

c)CDEF is not a golden rectangle.

d)CDEF is a golden rectangle.

MY ANSWER IS: d) CDEF is a golden rectangle.

I found phrase online with regards to golden rectangle which helped me arrived to my choice of answer.

"A golden rectangle with longer side a and shorter side b, when placed adjacent to a square with sides of length a, will produce a similar golden rectangle with longer side a + band shorter side a.

This illustrates the relationship {a+b} / a = a / b = φ"

a) CDEF is a square.

b)The length of CDEF is twice its width.

c)CDEF is not a golden rectangle.

d)CDEF is a golden rectangle.

MY ANSWER IS: d) CDEF is a golden rectangle.

I found phrase online with regards to golden rectangle which helped me arrived to my choice of answer.

"A golden rectangle with longer side a and shorter side b, when placed adjacent to a square with sides of length a, will produce a similar golden rectangle with longer side a + band shorter side a.

This illustrates the relationship {a+b} / a = a / b = φ"

ANSWERED AT 17/10/2019 - 05:39 AM

QUESTION POSTED AT 17/10/2019 - 05:39 AM

5'7" is Stephen's height

4.8 billion is the distance to the sun.

4.8 billion ft / 5'7" = 859,701,493 ft

4.8 billion is the distance to the sun.

4.8 billion ft / 5'7" = 859,701,493 ft

ANSWERED AT 17/10/2019 - 05:38 AM

QUESTION POSTED AT 17/10/2019 - 05:38 AM

I hope this helps you

A=(3+1).2/2

A=4

A=(3+1).2/2

A=4

ANSWERED AT 17/10/2019 - 05:36 AM

QUESTION POSTED AT 17/10/2019 - 05:36 AM

**Answer: The center of dilation is the origin (0, 0) and scale factor is 3.**

**Step-by-step explanation: **We are given to describe a dilation that that transforms ΔRST to ΔR'S'T', or to explain why it cannot be done.

We can see in the figure provided that both the triangles are right-angles at angles S and S'

Also, **RS = ST = 1 unit **and** R'S' = S'T' = 3 units.**

**Using Pythagoras theorem, we have**

**and**

**Therefore, the ratio of the corresponding sides will be**

**Since the ratio of the corresponding sides are equal, so the two triangles are similar.**

**Hence, ΔRST can be dilated to form ΔR'S'T'. **

**The center of dilation will be origin (0, 0), because the shapes of the two triangles are same with respect to the origin.**

**Also, **since the ratio of any two corresponding sides of the triangles is 3**, so the scale factor is 3.**

**Thus, ΔRST can be dilated to ΔR'S'T' with origin (0, 0) as the center of dilation and scale factor 3.**

ANSWERED AT 17/10/2019 - 05:33 AM

QUESTION POSTED AT 17/10/2019 - 05:33 AM

You'd solve the circumference formula for r

C=2πr = 47

r=47/(2π) = 7.48

C=2πr = 47

r=47/(2π) = 7.48

ANSWERED AT 17/10/2019 - 05:25 AM

QUESTION POSTED AT 17/10/2019 - 05:25 AM

3. This was spun 50 times, and it landed on yellow 6 times. Therefore, it won't land on yellow all but 6 times. P(not yellow) is 44/50, or 22/25.

4. If 50 students are asked, and 7 have a dog, then the probability is 7/50. We can use a proportion to find the equivalent of 7/50 with a denominator of 1400, because that is how many people are at the school. 7/50=x/1400. 50x=9800. x=196

4. If 50 students are asked, and 7 have a dog, then the probability is 7/50. We can use a proportion to find the equivalent of 7/50 with a denominator of 1400, because that is how many people are at the school. 7/50=x/1400. 50x=9800. x=196

ANSWERED AT 17/10/2019 - 05:15 AM

QUESTION POSTED AT 17/10/2019 - 05:15 AM

The formula for a cylinders surface area is

A=2πrh+2πr2

A=2πrh+2πr2

ANSWERED AT 17/10/2019 - 05:11 AM

QUESTION POSTED AT 17/10/2019 - 05:11 AM

I dont know loo it up

ANSWERED AT 17/10/2019 - 05:08 AM

QUESTION POSTED AT 17/10/2019 - 05:08 AM

X= 43.23+12.50=55.75

ANSWERED AT 17/10/2019 - 05:05 AM

QUESTION POSTED AT 17/10/2019 - 05:05 AM

Pythagorean Triples are 3 whole numbers such that a^2 + b^2 = c^2

The biggest number must be the 'c' because it is across from the 90 degree angle and therefore the longest side.

6^2 + 8^2 ?=? 10^2

36 + 64 ?=? 100

100 = 100

This is true so 6,8,10 is a Pythagorean triple.

5^2 + 12^2 ?=? 13^2

25 + 144 ?=? 169

169 = 169

This is true so 5,12,13 is a Pythagorean triple.

The biggest number must be the 'c' because it is across from the 90 degree angle and therefore the longest side.

6^2 + 8^2 ?=? 10^2

36 + 64 ?=? 100

100 = 100

This is true so 6,8,10 is a Pythagorean triple.

5^2 + 12^2 ?=? 13^2

25 + 144 ?=? 169

169 = 169

This is true so 5,12,13 is a Pythagorean triple.

ANSWERED AT 17/10/2019 - 05:03 AM

QUESTION POSTED AT 17/10/2019 - 05:03 AM

Area of the rectangle ==> 9x13 =117 cm²

Area of the right triangle ==> 11x(5)/2 =55/2 cm²

Total area = 117 + 55/2 = 289/2 = 144.5 cm²

Area of the right triangle ==> 11x(5)/2 =55/2 cm²

Total area = 117 + 55/2 = 289/2 = 144.5 cm²

ANSWERED AT 17/10/2019 - 04:51 AM

QUESTION POSTED AT 17/10/2019 - 04:51 AM

(2x^2-27x+91) is the right answer

ANSWERED AT 17/10/2019 - 04:44 AM

QUESTION POSTED AT 17/10/2019 - 04:44 AM

I just toke that test and the answer is B

ANSWERED AT 17/10/2019 - 04:27 AM

QUESTION POSTED AT 17/10/2019 - 04:27 AM

The answer is B, 3/4 miles to 1/2 inch which means 1.5 miles to 1 inch, because in the second map, the inches were divided by 2, making the map smaller, therefore we should double the scale to get the same measurments

ANSWERED AT 17/10/2019 - 04:02 AM

QUESTION POSTED AT 17/10/2019 - 04:02 AM

Y-intercept in this case means the average cost of a ticket in year 2005

then it increased

So it is A

then it increased

So it is A

If you still need help, just let me know!

ANSWERED AT 17/10/2019 - 03:50 AM

QUESTION POSTED AT 17/10/2019 - 03:50 AM