MATHEMATICS HIGH SCHOOL

Use the elimination method to solve the system of equations. Choose the correct ordered pair. 3x - y = -1
3x + 3y = 27
Use the elimination method to solve the system of equations. - 1

Answers

Answer 1
Answer: 6x-3y=27 --> 3*(2x-y = 9)
3x-y=13 Doesn't factor

Related Questions

A student is asked to solve the equation below and to justify her/his steps. Identify what, if anything, is incorrect in her/his math or justification.z – 3 = 11 NEED SOME FAST HELP I HAVE TEN MINS TILL THE TEST IS OVER PLEASE HELP
What is 4 1/6 minus 2 5/6
Help ASAP!!! With my math studyisland!!
PLEASE HELP ASAP 15 BRAINLY POINTS1) (multiple answers pick two) Does the equation represent a direct variation? If so, identify the constant of variation.17y = 85xA) YesB) No C) 5D) 1/5 2) Determine whether the relationship is a direct variation. X : 3, -1 , -4Y : -6, 2, 8 A) yes B) No 3) Is the relationship shown a direct variation? (it's not absolute value is a table chart) | X  | Y || -2 | 5  || 1  | 3  || 4  | 1  |A) yes B) No 4) Determine whether the relationship is a direct variation.------------------------------| X |   6    |   9    |   17  |-------------------------------| Y | 13.2 | 19.8 | 37.4 | -------------------------------A) yes B) no5) Determine which equation does NOT represent a direct variation.A) 6x - y = 0 B) y = 4x + 1 C) y = -2x D) y = 1/3x6) (multiple answer pick 2) Tell whether the equation represents a direct variation. If so identify the constant of variation. y + 3x = 0A) Yes B) No C) -3D) 1/3 E) 3
What multiplies to be 560 and adds to 9

Point O is the center of the circle in the diagram. What is m∠BCA ?A80°
B75°
C70°
D65°

Answers

The correct option is C.

Do quadrilaterals add up to 360?

Angle Sum of a Quadrilateral For any quadrilateral, we can draw a diagonal line to divide it into two triangles. Each triangle has an angle sum of 180 degrees. Therefore the total angle sum of the quadrilateral is 360 degrees.

The sum of angle around a point equal 360°

so (BOA) = 360-250=110°

and the sum of angle in the shape CAOB = 360°

so BCA = 360-(110+90+90)= 70°

Why do Angles in a Quadrilateral Sum to 360 Degrees?

Angles in a quadrilateral add to 360° because two triangles can be made inside any quadrilateral by drawing straight lines from one corner to the other corners. Each triangle contains 180° and so, two triangles contain 360°.

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the sum of angle around a point equal 360°
so (BOA) = 360-250=110°
and the sum of angle in the shape CAOB = 360°
so BCA = 360-(110+90+90)= 70°
THE ANSWER IS C.70°

A hiker is lost in the woods. A search team has created a coordinate grid to represent the woods. Each unit on the grid is one square mile. The hiker was last seen at (5, 10) and could have walked 12 miles in any direction since then. Which equation represents the area the hiker could be in? A)
(x - 5)2 + (y - 10)2 = 122


B)
(x + 5)2 + (y + 10)2 = 122


C)
(x - 10)2 + (y - 5)2 = 122


D)
(x + 10)2 + (y + 5)2 = 122

Answers

The correct answer is A) (x-5)²+(y-10)²=12².

The graph of possible locations would be a circle, since he could be in any direction.  12 would be the radius, since he could be 12 miles away.  The center of the circle would be his last location.  The equation of a circle is given by:

(x-h)²+(y-k)²=r²

Since (5, 10) is the center and 12 is the radius, this gives us
(x-5)²+(y-10)²=12²

Find the value of c so that the polynomial P ( x ) = 4x 3 + c x 2 + x + 2 have the same remainder when it is divided by x-2 and x+1?

Answers

For the polynomial P (x) = 4x³ + cx² +x + 2 the value of c is -13.

What is polynomial?

Polynomial is an algebraic expression that has more than two terms. In other words, it is a combination of different variables with mathematical operations.

The given equation of polynomial is,

P (x) = 4x³ + cx² +x + 2         (1)

Since, When polynomial is divided by  x-2, and x+1 it gives the same remainder,

This implies that at x=2 and x=-1, the value of the polynomial will be equal.

P(2)=P(-1)

4×(2)³+c(2)²+2+2=4×(-1)³+c(-1)²+(-1)+2

32+4c+4=-4+c+1

3c=-3-36

3c=-39

c=-13

So, the value of c is -13.

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Answer:

Step-by-step explanation:I don't say you have to mark my ans as brainliest but if you think it has really helped you please don't forget to thank me ...

When x = -3 on the graph of y = 2|x| + 3 what will be the y-coordinate?A. -3
B. 3
C. -9
D. 9

Answers

Substitute -3 into the equation

y = 2|x| + 3
y = 2 (3) + 3
y = 6 + 3
y = 9

Answer D

Nina has 84 stickers. She wants to divide the stickers equally among 5 friends. How many stickers does each friend get? how many stickers are left over?

Answers

As per the concept of unitary method, each friend will get 16 stickers, and there will be 4 stickers left over.

The unitary method is a technique that helps to solve problems related to ratio and proportion. It is based on the concept of "per unit" or "per one". In this problem, we need to find out how many stickers each friend will get if we divide the total number of stickers equally among them. To do this, we can use the unitary method.

Find the total number of stickers divided by the number of friends

To divide the stickers equally among 5 friends, we need to find out how many stickers each friend will get. We can do this by dividing the total number of stickers (84) by the number of friends (5).

84 ÷ 5 = 16 with a remainder of 4

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In the school chorus, 3 9 of the students are fourth graders. In simplest form, what fraction of the students in the school chorus are fourth graders?

Answers

Answer: 1 / 3

Step-by-step explanation:

3/9 of the students in the school choir are fourth graders.

To take a fraction to its simplest form, divide both of the numbers in the fraction by their highest common factor.

3 factors = 1 , 3

9  factors = 1, 3 , 9

Highest common factor = 3

Divide both numbers by 3

= (3/3) / (9/3)

= 1 / 3

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