MATHEMATICS MIDDLE SCHOOL

N =⟨−2,  −1⟩ and D=\left[\begin{array}{cc}-3&0\n4&1\n\end{array}\right]What is D⋅n?

Answers

Answer 1
Answer:

Answer:

6

-9

Step-by-step explanation:

-3(-2) + 0(-1)

4(-2) + 1(-1)

6 + 0

-8 + -1

6

-9

*don't forget to add brackets on each side of every calculation okay :)

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Help again and again.......

Answers

11n+33 is the correct answer

Answer:

d

Step-by-step explanation:

11(n+3)

11×n 11×3

11n+33

Pls someone help me with part b and their is 5.6 acres

Answers

$0.03+$0.04=$0.15x4=$0.60

Which statement is false ?A Every integer is also a real number .

B Every irrational number is also a real number .

C No irrational number is rational

D Every integer is also an irrational number

Answers

The answer is D every integer is also an irrational number because there are many integers that are not irrational like 5 every integer is rational.

D.  an integer is a rational number. D is false.

Which system of equations is represented by the graph? A. y = x2 − 5x − 3
6x − y = −27

B.y = x2 − 5x + 3
6x − y = 27

C. y = x2 + 5x + 3
6x + y = −27

D. y = x2 + 5x − 3
6x + y = 27

Answers

Answer:

The correct option is C.

Step-by-step explanation:

The vertex form of a parabola is

y=a(x-h)^2+k              .... (1)

Where, (h,k) is vertex.

From the given figure it is clear that the vertex of the parabola is at (-2.5, -3.25) and the y-intercept is (0,3).

Substitute h=-2.5, k=-3.25, x=0 and y=3 in equation (1) to find the value of a.

3=a(0+2.5)^2-3.25

3+3.25=6.25a

6.25=6.25a

Divide both sides by 6.25.

1=a

Substitute h=-2.5, k=-3.25 and a=1 in equation (1), to find the equation of parabola.

y=1(x+2.5)^2-3.25

y=x^2+5x+6.25-3.25

y=x^2+5x+3

The equation of parabola is y=x^2+5x+3.

If a line passes through two points then the equation of line is

y-y_1=(y_2-y_1)/(x_2-x_1)(x-x_1)

The line passes through two points (-6,9) and (-5,3).

y-9=(3-9)/(-5+6)(x+6)

y-9=(-6)/(1)(x+6)

y-9=-6(x+6)

y-9=-6x-36

Add 9 on both the sides.

y=-6x-36+9

y=-6x-27

The equation of line is y=-6x-27.

Therefore the correct option is C.
C. y = x2 + 5x + 3
6x + y = −27

The table shows the number of pages that Cindy can read in different amounts of time.Number of Minutes 8 12 20
Number of Pages Read 10 15 25
What is the constant of proportionality?
0.75
0.8
1.25
1.5

Answers

Yes really simple, y is the bottom  10 15 and 25 well in a graph y is on the top so put y on top of x and divide. SO 10 divided by 8 15 divided by 12 and 25 divided by 20 which all equal 1.25! Now just because I'm only a helping hand doesn't mean I dont know my math! Hope I helped
y=mx
10=m(8)
m=1.25
the constant of proportionality is 1.25

Numbers expressed using exponents are called

Answers

The correct answer is:
powers.

Explanation:
The base of a power is the number that is multiplied repeatedly; the exponent is the number of times it is multiplied. Together they make a power.
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