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Norma-Jean [14]
4 years ago
5

Is (3,-2) the solution to this system of equations? Yes or no (circle one) -2x-4y=2 3x+4y=8

Mathematics
1 answer:
rodikova [14]4 years ago
8 0

Answer:

(2,−1)

Explanation:

The quickest way is to use elimination

3x+4y=2

                 +

2x−4y=8

−−−−−

5x      =10

⇒   x=2

Now substitute into one of the original eqns.

3×2+4y=2

6+4y=2

4y=−4⇒y=−1

check in other eqn.

2x−4y=8

2×2−(4×−1)=4−−4=4+4=8√

solns (2,−1)

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Q ##10 please I need help with this
algol [13]

Here we are given the inequality:

y\geq4x-5

Let us check for each ordered pair that satisfies the given inequality.

1. (3,0)

LHS: y

here y is 0.

So LHS is 0.

RHS: 4x-5

plugging x as 3,

4(3)-5 = 7

0≥7

False

So (3,0) does not satisfy the inequality.

2. (1,1)

LHS: y

here y is 1.

So LHS is 1.

RHS: 4x-5

plugging x as 1,

4(1)-5 = -1

1≥-1

True

So (1,1)  satisfy the inequality.

1. (3,4)

LHS: y

here y is 4.

So LHS is 4.

RHS: 4x-5

plugging x as 3,

4(3)-5 = 7

4≥7

False

So (3,4) does not satisfy the inequality.

1. (2,1)

LHS: y

here y is 1.

So LHS is 1.

RHS: 4x-5

plugging x as 2,

4(2)-5 = 3

2≥3

False

So (2,1) does not satisfy the inequality.

Answer: (1,1) is the solution of the given inequality.

3 0
3 years ago
A line with slope of -1/10 passes thorugh the point (1,8). What is its equation in point slope form?
Alisiya [41]

ABOUT POINT SLOPE FORM:

  • y - Y1 = m(x - X1)
  • m represents the slope
  • Y1 & X1 is a point
  • The form allows you to identify the slope & the point on the line

y - Y1 = m(x - X1)

y - 8 = -1/10(x - 1) -- IN POINT SLOPE FORM


Hope this helps you!!! :)

5 0
3 years ago
Read 2 more answers
Find the missing measurement of AC
IgorLugansk [536]

Answer:

AC = 78

Step-by-step explanation:

Since all the angles are equal (60°), this is an equiangular triangle (meaning all angles re equal). Equiangular triangles are also equilateral meaning that all sides are equal)

We are given then one side is 11x-32 and another side is 5x+28

These two sides must be equal so we can set them equal to each other and solve for x

11x - 32 = 5x + 28

6x - 32 = 28

6x = 60

x = 10

If x = 10, then we can substitute x into either of the two equations to find the length of all three sides (since all sides have equal length)

11(10)-32 = 110 - 32 = 78

AB = BC = AC = 78

AC = 78

8 0
3 years ago
2(3) +5 <br> What’s the answer
stepan [7]

Answer:

11

Step-by-step explanation:

Order of Operations: BPEMDAS

Step 1: Write expression

2(3) + 5

Step 2: Multiply

6 + 5

Step 3: Add

11

8 0
3 years ago
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I NEED HELP ASAP!!!!!​
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