Mathematics High School

A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
-9x-8y= 41
-9x-2y=71

A Variable Needs To Be Eliminated To Solve The System Of Equations Below. Choose The Correct First Step.

Answers

Answer 1

Answer:

I think it is add to eliminate x

Answer 2

Answer:

Step-by-step explanation:

A Variable Needs To Be Eliminated To Solve The System Of Equations Below. Choose The Correct First Step.

Related Questions

Olivia is doing her math home work for each problem she use 3/4 sheets of paper how many sheets she use for 20 problem use estimstion

Answers

Answer:

15

Step-by-step explanation

20 multiplied by .75 (.75 represents 3/4 sheet)

I NEED HELP ASAP ASAP!
PLEASE HURRY AND ANSWER QUICKLY AND CORRECTLY ITS WORTH 50% OF MY GRADE!!!

Answers

Answer:

$16

Step-by-step explanation:

BRAINEST, BEST WILL GET IF EXPLANED WELL

Answers

Answer:

4(x-2) isn't equal to the others because when simplified it is 4x-8

Step-by-step explanation:

what is positive slope

Answers

Answer:

A positive slope means that two variables are positively related- that is when x increases, so does y, and when x decreases, y decreases also. Graphically, a positive slope means that as a line on the line graph moves from left to right, the line rises.

if socks cost $8.97 for 3 pairs how much does one pair cost?

Answers

Answer:

7

Step-by-step explanation:

Answer:

$2.99

Step-by-step explanation:

$8.97/3 = 2.99

$8.97 divided by 3 equals $2.99

Good Luck!

The coordinates of the point where the lines y= 2x- 3 and
y=5 intersect are?

Answers

Answer:

Step-by-step explanation:

A pair of shoes is on sale for 30% off. The original price is p. Which expression can be used to find the price of the shoes after the discount? 0.30p 0.70p 1.30p 30p​

Answers

Answer:

0.30p

Step-by-step explanation:

(px30)/100=0.3p

Answer:

0.70 p

Step-by-step explanation:

If the item is 30% off, the new price is 0.7p because we want to know how much 70% of the original price was.

math question
i kind of need this done quicker, however no rush..! :)

x=-2y
x-y=9

Answers

Answer:

(6,-3) or x=6 y= -3

Step-by-step explanation:

At Putt Putt, they offer a special for unlimited mini golf. You decide to go golfing with your friends. After golfing and purchasing lots of food, you end up spending $50. In total you leave Putt Putt with $5. Let s represent the amount of money you started with.
Part 1: Write an equation involving s
Part 2: Solve for how much money you brought to Putt Putt.

Answers

Answer:

part 1: a-50=5. a=55

Step-by-step explanation:

because fifty five minus 50 is equal to 5

If two angle measurements are 53° and 70,° what must the third angle measurement equal to form a triangle?Please help please?

Answers

Answer:

57 degrees

Step-by-step explanation:

in a triangle the three interior angles always add to 180°

if you add 53 and 70 you get 123

to find the missing angle you would subtract 180 from the two numbers added

180 - 123

so 57 degrees

Find x of the angles are supplementary 3x-2 and 41 degrees ?

Answers

Answer:

x = 47

Step-by-step explanation:

3x - 2 + 41 = 180 {Supplementary}

3x   + 39 =  180

        3x   = 180 - 39

       3x  = 141

          x = 141/3

x = 47

if the diameter of my burger is 5cm,what is the area?​

Answers

Answer:

19.625cm squared because you have to divide the diameter by 2 to get the radius.

Step-by-step explanation:

Mayson wanted to play his video games. His mother told him that he needed to finish his homework, walk the dog, and clean his room before playing video games. . He completed his homework in 48 minutes. He took 25 minutes to walk the dog. He took 75 minutes to clean his room. . There are 60 minutes in 1 hour. How much time did Mayson have to spend doing homework and cleaning before playing video games?​

Answers

Answer: 2 hours and 28 minutes

Equation: 48+25 = 72+75 = 148 min

Which is a set of collinear points?

Two lines intersect at point H. One line goes through points L and J. The other line goes through points G, I, and K.
A. G, H, I
B. L, H, I
C. G, H, J
D. G, I, J

Answers

Answer:

Step-by-step explanation:

Abcd

AAAAAAAAAAAAAAAAA HELP

Answers

SAME CAN SOMEONE ANSWER IT ASAP WILL MEAN ALOTTTTT

Mr. Platt buys 5 calculators to use in his classroom and pays $44.95. Construct a model or diagram to represent this relationship. Write an equation that could be used to find the price, C, of each calculator.

Answers

Answer:

I cant really help with the diagram but the equation is

$44.95 divided by 5 = $8.99

Answer: The equation is 5c = 44.95

Step-by-step explanation:

The equation is 5c = 44.95, when c is the price of each calculator.

Katie wants to buy a bicycle that costs $200. This is
$20 more than twice what she saved last month. How
much did she save last month?.
Find the number.

Answers

Step-by-step explanation:

Multiply both the numbers

200 × 20

(4000) Answer

Need help with this question

Answers

Answer:

C. x = 3

Step-by-step explanation:

8x - 8 = 2x + 10

get the x on it's own

8x - 8 + 8 = 8x

2x + 10 + 8 = 2x + 18

8x = 2x + 18

8x - 2x = 6x

2x + 18 - 2x = 18

6x = 18

now divide each side by 6

6x / 6 = x

18 / 6 = 3

x = 3

X=3

Explanation

8x-8=2x+10

6x=18

x=3

Use your scratch paper to draw a coordinate plane and plot the following data set: (4,3), (1,2), (9.1), (10,2), (9,10), (1,7),(5,0), and (6,1),
What type of association exists between the data points?

Answers

Answer:

3,)ft

Step-by-step explanationpads: 1 7(.9t

Rewrite the following expression using exponents

1/16

Answers

Answer:

6.25 * 10^-2

Step-by-step explanation:

hmmmmmmmmm

4^-2 is the answer 4 exponent -2

Isaac and Albert spot a hot air balloon flying at a low altitude. They decide to calculate its height by standing 400 feet apart on a level surface and measuring the angle of elevation to the balloon. From
Albert, the balloon was at an angle of elevation of 62°and from Issac its was 48º. Determine the height of
the balloon above the ground to the nearest foot.

Answers

Answer:

144 feet to nearest foot.

Step-by-step explanation:

Let the distance between Albert and the point on the ground that the balloon is directly above be x feet Then for Isaac the distance is 400 - x feet

So we have 2 right angled triangles and:

tan 62 = h/x

tan 48 = h / (400- x)         where h is the height of the balloon.

From the first equation x = h / tan 62 so plugging this into the second one:

tan 48 =  h /  ( 400 - h/tan 62)

h = 400 tan 48 - h tan 48 tan 62

h + h tan 48 tan 62 = 400 tan 48

h ( 1 + tan48 tan62) = 400 tan48

h = 400 tan 48 / (1 +  tan 48 tan 62)

= 143.8 feet.

Find the composition of transformations that map ABCD to EHGF. Reflect over the -axis, then translate (x+ ,y+)

Answers

9514 1404 393

Answer:

  (x+ (-4), y+ (-4))

Step-by-step explanation:

After point D is reflected across the y-axis, its coordinates are ...

  D(-1, 2) ⇒ D'(1, 2)

This is the point that gets translated to F(-3, -2). The translation is ...

  F -D' = (-3, -2) -(1, 2) = (-3-1, -2-2) = (-4, -4)

Then the translation rule is ...

  (x, y) ⇒ (x+(-4), y+(-4))

The figure below shows an upside-down pyramid with a square base.
Which shape does the intersection of the horizontal plane with the pyramid look like?

Answers

Answer:

B

Step-by-step explanation:

A square pyramid is one with a square base. The correct option is B.

What is a square pyramid?

A square pyramid is one with a square base. It is a right square pyramid with C4v symmetry if the top is perpendicular to the centre of the square. It is an equilateral square pyramid if all edge lengths are equal.

The place at which the up-side down pyramid will intersect with the plane will be a square.

Hence, the correct option is B.

The complete question is:

If a vertical plane cuts through a square pyramid down from the vertex, which of the following best describes the shape of the cross-section?

A. Pentagon

B. Square

C. Rectangle

D. Triangle

Learn more about Square Pyramid:

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Find the value of x that makes m ∥ n 2x x

Answers

Answer:

Step-by-step explanation:

m/n = 2x/2

but what is the equation u didnt mentiones though

DESPERATE WILL GIVE BRAINLIST AND THANKS
Use the data to create a scatter plot.



Weight vs. Stretch Distance
PointMove
UndoRedoReset
Stretch distance (cm)Weight (N)
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
0


Stretch distance (cm)

Weight (Newtons)

2.0

1

3.5

2

4.0

2

4.5

3

5.5

5

6.0

6

7.5

8

9.0

9


(plz show the graph picture with the answer)

Answers

Answer: What you must do for this case is to graph each of the ordered pairs that you have in the table to obtain the dispersion chart. Note that in your table you have eight ordered pairs, therefore, your scatter chart must have eight pairs.

Step-by-step explanation:

A triangle is show below, what is the value of X?

Answers

Answer:

x=149

Step-by-step explanation:

pythagoras theorem dictates that a squared +b squared= c squared

in this case, c=x

51*51+140*140=x*x

2601+19600=x*x

22201=x*x

x=149

(04.05)
Which of the following is true about a function that is constant? (4 points)

HELP PLEASE

Answers

Answer:

A. it is a horizontal line

Step-by-step explanation:

PLEASE HELP
7x-3= -24 what is x and how do you find it?

Answers

Answer:

x = -3

Step-by-step explanation:

7x - 3 = -24 (Given)

7x - 3 + 3 = -24 + 3 (Added 3 on both sides by using the addition property of equality)

7x = -21 (Simplified)

7x/7 = -21/7 (Divided 7 on both sides by using the division property of equality)

x = -3 (Simplified)

Therefore, x = -3.

Answer:

x= -3

Step-by-step explanation:

You do the opposite.

So,

-24 +3

= -21

-21/ 7

= -3

Therefore, the answer is -3

What is the distance between points (-7, 8) and (2, 8)? ​

Answers

Answer:

Exact Form:

2 √ 34

Decimal Form:

11.66190378

The distance between points (-7, 8) and (2, 8) is 9 units.

Formula to calculate distance between two points:

The distance d between two points [tex](x_{1},y_{1}),(x_{2},y_{2})[/tex] is,[tex]d=\sqrt{(x_{2}-x_{1})^{2}+ (y_{2}-y_{1})^{2} }[/tex]

For given question,

Let [tex](x_{1},y_{1}) = (-7,8),(x_{2},y_{2})=(2,8)[/tex]

Let d be the distance between two points.

Using distance formula,

[tex]d=\sqrt{(x_{2}-x_{1})^{2}+ (y_{2}-y_{1})^{2}[/tex]

[tex]d=\sqrt{(2-(-7))^{2}+ (8-8)^{2} }[/tex]

[tex]d=\sqrt{(2+7)^{2}+0^{2}[/tex]

[tex]d=\sqrt{9^{2}+0 }[/tex]

[tex]d=9[/tex]  units

Hence, the distance between points (-7, 8) and (2, 8) is 9 units.

Learn more about distance between two points here:

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Quadrilateral abcd is rotated 90 degrees clockwise about the origin. What are the coordinates of A'B'C'D?

Answers

Answer:

your answer is A

Step-by-step explanation:

have a nice day!! ^_^

The coordinate of A` is (5,5) , the coordinate of B` is (5,1), the coordinate of C` is (2,1) and the coordinate D` is (1,5).

What is the coordinate of a point?

A pair of number that describes the exact position of a point on  a cartesian plane by using the horizontal and vertical lines is called the coordinate of a point. Coordinates are usually denoted by (x, y).

From the figure we can see that A` is 5 unites right of vertical line and 5 unit upward the horizontal line. So, the coordinate of A` is (5,5).

Similarly, B` is 5 unit right of vertical line and 1 unit upward the horizontal line. So, the coordinate of B` is (5,1).

C` is 2 unit right of vertical line and 1 unit upward the horizontal line. So, the coordinate of C` is (2,1).

And, D` is 1 unit right of vertical line and 5 unit upward of horizontal line. So, the coordinate of D` is (1,5).

Hence the coordinates of A`B`C`D` is (5,5), (5,1), (2,1) and (1,5) respectively.

To learn more about coordinates click here:

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