Solve the simultaneous equations by substitution
8y−3x=23
3x=2y+1

Answer:

choice A) =<3

Step-by-step explanation:

x = number of shirts

50 -10 = x(12)

40 = 12x

x = 3 .33

Answer:

355+480 is the same as 335+500

Step-by-step explanation:

355+480=835

835-335=500

∴355+480 is the same as 335+500

Formulas:

A= πr²

d= 2r

Solving:

A=14πd²=14·π·6²≈28.27433ft²

Hope I helped. :)

- Valenteer

(Please mark me as brainliest if this helped, that would be beneficial!)

(Thx for the points!)

Answer:

The right answer is = so C ig

Answer:

HIIIII GVJJHGNKJMJNNJ SEXIIIJBH

Step-by-step explanation:

Answer: Hi there are sex11  sigZaghahahahah

Step-by-step explanation:  What????????

Answer:

3550 ft.

Step-by-step explanation:

y = 500(5) + 1050

  = 2500 + 1050

  = 3550 ft,

9514 1404 393

Answer:

 IS a parallelogram

Step-by-step explanation:

The slope formula for the slope of the line between points (x1, y1) and (x2, y2) is ...

  m = (y2 -y1)/(x2 -x1)

The distance formula for the length of that same line is ...

  d = √((x2 -x1)^2 +(y2 -y1)^2)

Here, you're asked to use each of these formulas 4 times, once for each side of the quadrilateral. I find it convenient to let a calculator or spreadsheet do the repetitive calculations. The result is attached.

The attachment shows that opposites sides have the same length and slope, so are parallel. The quadrilateral is a parallelogram. (The two points used in each calculation are the ones on the result line and the line immediately below. That is why point B is copied to the end of the list.)

_____

Additional comments

There are much simpler ways to prove the figure is a parallelogram. My favorite is to add the coordinates of the end points of the diagonals:

  B +D = (-2+6, -9-3) = (4, -12)

  C +E = (0+4, -5-7) = (4, -12)

These values being the same demonstrates the midpoints of the diagonals are coincident. That will only be the case if the quadrilateral is a parallelogram.

__

If you must use slope and distance formulas, showing either pair of opposite sides is parallel and have the same length is sufficient to guarantee that the other two sides are also parallel and have the same length. That is, the calculations required in this problem only need to be applied to one pair of opposite sides. (Using a spreadsheet, it's not a lot of extra work to do the calculations for both pairs of opposite sides.)

Answer:

[tex]3s^{4}t\\[/tex]

Step-by-step explanation:

Step-by-step explanation:

f(-1)=4*(-1)-2=-4-2=-6

g(-3)=-2*(-3)+1=6+1=7

f/g=-6/7

Answer:

Look at the image !!

Step-by-step explanation:

I hope this helps :D

Answer:

Step-by-step explanation:

-4=2x+16

-16. -16

-20=2x

20/2=2x/2

10=x

Answer:

82.125

≈82.12 ( am not sure if it need to be estimated )

Step-by-step explanation:

1 hr -> 10.95

30m-> 5.475

10.95x7=76.65

76.65+5.475=82.125

                    ≈82.12 ( am not sure if it need to be estimated )

Look up "Everything You Need To Know About Math In One Big Fat Notebook pdf." It's the best thing I've ever been given, I have it with me in math class all the time and I've aced every test.

the answer

y/x so its 9/5

Answer:

i

Step-by-step explanation:

i

Answer:

[tex]18r+\frac{1}{2}(14)(r)=182[/tex]

Step-by-step explanation:

Area of the composite figure ABCDE = Area of triangle ABE + Area of the rectangle BCDE

Area of triangle ABE = [tex]\frac{1}{2}(32-18)(r)[/tex]

                                  = [tex]\frac{1}{2}(14)(r)[/tex]

Area of rectangle BCDE = 18 × r

                                        = 18r

Total Area = [tex]\frac{1}{2}(14)r+18r[/tex]

Therefore, equation to get the value of 'r' will be,

[tex]18r+\frac{1}{2}(14)(r)=182[/tex]

Answer:

130°

Step-by-step explanation:

Using the formula

Area of the triangle = 1/2 absin theta

a and b are the sides

theta is the obtuse angle

Given

a = 30m

b = 26m

Area = 200m²

Required

theta

Substitute into the formula;

300 = 1/2(30)*(26)sin theta

300 = 15*26sin theta

300 = 390 sintheta

sin theta = 300/390

sin theta = 10/13

sin theta = 0.7692

theta = arcsin(0.7692)

theta = 50.28degrees

Since the angle is obtuse, it must lie between 90 and 180degrees

theta = 180-50.28

theta = 129.72°

Hence the measure of the obtuse angle to the nearest degree is 130°

Answer:

y = 2.5x

Step-by-step explanation:

Answer:

1 quintillion and 1.

Step-by-step explanation:

This is the number written out:

1000000000000000001

Answer:

It will not fit.

Step-by-step explanation:

The mat is 1/2 by 2/3. So, lets add that together.

1/2 + 2/3 = 7/6

Now there are 24 sixths in a fourth.

So subtract 24 - 4 = 17

Final answer would be 17/4. Still way to big to fit in the 1/4 step.

:)

btw. Im back home now :)

49 would be the answer I hope it helps

Answer:

Result = 49.495

Step-by-step explanation:

17.3% of 286.1=49.4953

rounded~49.495

Hope this helps as well

Answer:

1. The Pacific Ocean has an area of 63.78 million square miles, an average depth of 3,688 meters, and a volume of 660,000,000km cubed.

2. Use these guidelines when developing questions:

   Plan your questions.

   Know your purpose.

   Open conversation.

   Speak your listener's language.

   Use neutral wording.

   Follow general questions with specific ones.

   Focus your questions so they ask one thing at a time.

   Ask only essential questions.

3.  I don't know XD

4. On an adventure that humans don't know about

5. Depends on the picture of the sun.

6. They would probably be so confused while they tried to follow each other XD

Step-by-step explanation:

Answer:

x = 20

Step-by-step explanation:

Each line creates a 180° angle on each side of it. Since these lines intersect, they have congruent angles. This means that these two quantities can be set equal to each other.

3x + 50 = 6x - 10

Solve by combining like-terms and isolating x. Move the 3x to the right by subtracting it from both sides.

50 = 3x - 10

Move the 10 to the left by adding it to both sides.

60 = 3x

Divide the 3 from both sides to isolate the x.

x = 20

Furthermore, this can be checked by plugging in 20 to x and seeing if the expression is true.

3(20) + 50 = 6(20) - 10

110 = 110

Answer:

c=214.28

plz mark as brainliest

Step-by-step explanation:

Answer:

C=0.4(285.7)+100

Step-by-step explanation:

C=0.4(285.7)+100

C= 114.28 + 100

C= 214.28

45500 = 91%

100 - 91 = 9%

Answer:

9mnp

Step-by-step explanation:

Answer:

It's 3m - 5n + 7p lol

Answer:

20

Step-by-step explanation:

(2x)° + (2x)° + (6x - 20)° = 180°

10x = 200

x = 20