I need help fast. Its 8th grade math, multiple choice question. (I added photos)

Answer:

third option

Step-by-step explanation:

Given

z = 6πxy ( isolate x by dividing both sides by 6πy )

[tex]\frac{z}{6\pi y}[/tex] = x

Answer:

Step-by-step explanation:3 divided by 42=14

14*5=70

70+42=112

Answer:

x = [tex]\frac{3}{a-b}[/tex]

Step-by-step explanation:

Given

ax - bx = 3 ← factor out x from each term on the left side

x(a - b) = 3 ← divide both sides by (a - b)

x = [tex]\frac{3}{a-b}[/tex]

Answer:

true

Step-by-step explanation:

hope this helped!

p.s it would be cool if you gave me brainliest.

Answer:

True

Step-by-step explanation:

To find the range first order the data from the least to greatest. Then subtract the smallest value from the largest value in the set.

Answer:

Step-by-step explanation:

67 is tyen answer i did the quiz im in 9th grade

Answer:

x-4/3

Step-by-step explanation:

the unknown number is the number they think of, you can't read their mind. but you know you have to subtract by 4 and divide by 3.

Answer:

The answer should be 14.37008 inches.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Semicircle:

diameter = 6 yd

r = 6/2 = 3 yd

[tex]Area \ of \ semicircle = \dfrac{1}{2}\pi r^{2}\\\\[/tex]

                                [tex]=\dfrac{1}{2}*3.14*3*3\\\\= 14.13 \ yd^{2}[/tex]

Triangle:

base = b =6 yd

height = h = 4 yd

[tex]Area \ of \ triangle = \dfrac{1}{2}bh\\\\[/tex]

                            [tex]=\dfrac{1}{2}*6*4\\\\\\= 3*4\\\\= 12 \ yd^{2}[/tex]

Area of composite figure =area of semicircle + area of triangle

                                         = 14.13 +12

                                         = 26.13 yd²

Answer:

It is B

Step-by-step explanation:

B:3=b

bx3=B

Answer:

C. 200.96 yd²

Step-by-step explanation:

diameter = 16 yd

radius = diameter/2 = 16 yd / 2 = 8 yd

area = πr²

area = 3.14 × (8 yd)²

area = 200.96 yd²

The dilations will give the relations:

C'D = (3/4)CD and A'B' = (1/2)AB

And a sketch of the graph can be seen at the end.

First, we want to dilate point C using D as the center of dilation with a scale factor = 3/4.

This only means that we will have the new point C', such that:

C'D = (3/4)*CD

Where CD is the distance between points C and D

b) Similarly, we will dilate the whole segment AB into the segment A'B', such that:

A'B' = (1/2)AB.

It is hard to give the exact graph when we don't know the coordinates of the points, but the graph should look something like the one you can see below.

If you want to learn more about dilations, you can read:

https://brainly.com/question/3457976

Let's see

[tex]\\ \rm\rightarrowtail 3m^2n(L)=12mn^2[/tex]

[tex]\\ \rm\rightarrowtail mL=4n[/tex]

[tex]\\ \rm\rightarrowtail L=4n/m[/tex]

Answer:

[tex]\sf length=\dfrac{4n}{m}[/tex]

Step-by-step explanation:

Area of a rectangle = width × length

Given:

Substituting the given expressions into the equation:

[tex]\sf \implies 12mn^2=3m^2n \times length[/tex]

[tex]\sf \implies length=\dfrac{12mn^2}{3m^2n}[/tex]

Factor 12 to 3 · 4:

[tex]\sf \implies length=\dfrac{3 \cdot 4mn^2}{3m^2n}[/tex]

Cancel the common factor of 3:

[tex]\sf \implies length=\dfrac{4mn^2}{m^2n}[/tex]

Simplify [tex]\sf \dfrac{n^2}{n}=n[/tex] :

[tex]\sf \implies length=\dfrac{4mn}{m^2}[/tex]

Simplify [tex]\sf \dfrac{m}{m^2}=\dfrac{1}{m}[/tex] :

[tex]\sf \implies length=\dfrac{4n}{m}[/tex]

Answer:

52x2−2

Step-by-step explanation:

=49x2+−8+4x2+1+5+−x2

Combine Like Terms:

=49x2+−8+4x2+1+5+−x2

=(49x2+4x2+−x2)+(−8+1+5)

=52x2+−2

Answer: cone Cylinder

Surface area is 402ft2 and 69ft2

Step-by-step explanation:

I got the answer right

The appropriate shape to model trunk is cylinder, rest of the tree is cone and surface area of trunk is 25.12 [tex]feet^{2}[/tex]and surface area of rest of the tree is 415.58 [tex]feet^{2}[/tex].

It is the space occupied by a two dimensional surface. The area occupied by a three dimensional object by its outer surface area.

The upper part of the tree is similar to the cone and the trunk is of cylindrical shape. So the appropriate shape used to model the entire is cone above the cylinder.

We have been given the height of entire tree=30 feet,

Width of upper part=10 feet.

Height of trunk=4 feet

Width of tree means diameter of upper part or cone. Height of cone means height of cylinder, width of trunk means diameter of cone.

So, The radius of cone ie 5 feer,radius of cylinder is 1 feet, height of cone be 30-4=26 feet.

Surface area of cone is πrl where l is slant height of cone which is equal to [tex]\sqrt{r^{2} +h^{2} }[/tex]

l=[tex]\sqrt{5^{2} +26^{2} }[/tex]

=[tex]\sqrt{701}[/tex]

=26.47 feet.

Surface area of cone=π*5*26.47

=3.14*5.26*26.47

=415,28 [tex]feet^{2}[/tex]

Surface area of cylinder=2πrh

=2π*4*1

=2*3.14*4

=25.12 [tex]feet^{2}[/tex]

Hence cone and cylinder of surface area 415.28 [tex]feet^{2}[/tex] and 25.12 [tex]feet^{2}[/tex] can be used to model out tree.

Learn more about surface area at https://brainly.com/question/16519513

#SPJ2

Answer:

How much it's worth now - 54.45 Dollars

Discount - 44.55 Dollars

Answer:

is there an area tho

Step-by-step explanation:

Answer:

  (a, b, c) = (0, -4, 4)

Step-by-step explanation:

Any of a variety of calculators, spreadsheets, or web sites can solve these equations for you. A calculator result is attached. It shows the solution to be ...

  (a, b, c) = (0, -4, 4)

__

If you'd like to solve the system by hand, here's one way:

Add the three equations together:

  (2a +b +c) +(2b +c +a) +(2c +a +b) = (0) +(-4) +(4)

  4a +4b +4c = 0 . . . . simplify

  a +b +c = 0 . . . . . divide by 4

Substitute this into each of the other equations:

  a +(a +b +c) = 0   ⇒   a +0 = 0   ⇒   a = 0

  b +(a +b +c) = -4   ⇒   b +0 = -4   ⇒   b = -4

  c +(a +b +c) = 4   ⇒   c +0 = 4   ⇒   c = 4

Answer:

B, 10.5

Step-by-step explanation:

It's actually 10.54, but since you want be to round it, it's 10.5

Answer:

[tex]\sf{x=\dfrac{7}{2}=3.5 }[/tex]

Step-by-step explanation:

It is necessary to isolate the term of x from both sides in order to solve this problem.

First, subtract by 5 from both sides.

2x+5=12

[tex]\sf{2x+5-5=12-5}[/tex]

Solve.

[tex]\sf{12-5=7}[/tex]

2x=7

Divide by 2 from both sides.

2x/2=7/2

Solve.

Dividing is another option.

7/2=3.5

So, the final answer is 7/2=3.5.

I hope this helps you! Please let me know if my answer is wrong.

Answer:

13.0 hours

Step-by-step explanation:

$143 ÷ $11 (how he gets payed per hour) = 13 hours

Byron has to work 13 hours to earn $143 dollars

Answer:

[tex]Byron \: will \: have \: to \: work \: for \\ \: 13\: hrs \: to \: earn \: 143[/tex]

[tex]let \: the \: number \: of \: hrs \: = x \\ then \\ for \: the \: salary \: of \: \: 143 \: \\ the \: earning \: \times \: the \: time \: (x) = 143 \\ so \: 11x \: = 143 \\ x = \frac{143}{11} = 13.[/tex]

Answer:

[tex]y=5x-18[/tex]

Step-by-step explanation:

Given the following question:

Point A = (4, 2) = (x, y)
Slope = 5

To find the answer we are going to have to use the formula for slope intercept, substitute the values, then solve for the variable b to have our answer.

[tex]y=mx+b[/tex]
[tex]y=2[/tex]
[tex]m=5[/tex]
[tex]x=4[/tex]
[tex]2=5(4)+b[/tex]
[tex]5\times4=20[/tex]
[tex]2=20+b[/tex]
[tex]20-20=0[/tex]
[tex]2-20=-18[/tex]
[tex]-18=b[/tex]
[tex]b=-18[/tex]
[tex]y=5x-18[/tex]

Your answer is "y = 5x - 18."

Hope this helps.

Answer:

36

Step-by-step explanation:

one calculator price =30/5=6

cost price of 6 calculator=6*6=36

In the given ∆RST,

➾Tan 53° = ST/RT

➾ 1.327 = 14/RT

➾ RT = 14/1.327

➾ RT = 10.55 (approx)

➢ Therefore, the length RT = 10.55 cm (approx)

Answer:

1. d) [tex]\mathsf{y=7(0.98)^t}[/tex]

2. A) [tex]\mathsf{y=2000(0.07)^t}[/tex]

3. zero and 1

Step-by-step explanation:

General form of an exponential model:  [tex]\mathsf{y=ab^x}[/tex]

If 0 < b < 1 then model decays

1. d) [tex]\mathsf{y=7(0.98)^t}[/tex]

2. A) [tex]\mathsf{y=2000(0.07)^t}[/tex]

3. Exponential decay models have a base between 0 and 1

Answer:

4/3

Step-by-step explanation:

We can use the slope formula to find the slope

m = ( y2-y1)/(x2-x1)

    = ( 6-10)/(2-5)

   = -4/-3

   = 4/3

Answer:

13 calories per serving

Step-by-step explanation:

52/4 = 13

Answer:

13

Step-by-step explanation:

52 divide 4 equals to 13

Hope this help :)

Answer:

Step-by-step explanation:

you can re-write 3 1/2 hours into minutes.

1 hr = 60 minutes,

Therefore:

3 1/2 hours = 3.5 times 60 = 210 minutes

So now we have the ratio:

3 1/2 hours : 36 minutes

210 minutes : 36 minutes

Both numbers can be divided by 6

210/6 = 35 and 36/6 = 6

So now we can re-write the ratio as :

35 : 6

Answer: D

Step-by-step explanation: