MATHEMATICS HIGH SCHOOL

An array with m rows and n columns is not: A: An m-by-n array. B: An n-by-m array. C: A two-dimensional array. D: An n times m dimensional array.

Answers

Answer 1
Answer:

Answer:

B, An  n-by-m array.

Step-by-step explanation:

when working with  2D arrays, rows come first and then columns. so all options here are correct except option B

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Solve 2x^2+15x-8=0 and 2x^2+8x-24=0 for x
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Determine which binomial is not a factor of 4x^4 - 21x^3 - 46x^2 +219x + 180a. x+4 b. 4x+3 c. x-5 d. x+3

What’s greater 5 1/2 or 5 1/4

Answers

Answer:5 1/2

Step-by-step explanation:5 1/2= 5.50

5 1/4= 5.25

5.50>5.25

Answer: I’m pretty sure it’s 5 1/2

Step-by-step explanation:

What is the solution to the system of equations?6x – 9y = 16
2x – 3y = 7
A) (5, 1)
B) (2, -1)
C) (3, 2/9)
D) no solution

Answers

If you would like to know the solution to the system of equations, you can calculate this using the following steps:

6x – 9y = 16
2x – 3y = 7     /*(-3) ...  -6x + 9y = - 21
___________
6x – 9y - 6x + 9y = 16 - 21
0 = - 5

The correct result would be D) no solution.

How do i find the slope of a line that passes through a given point and is parallel or perpendicular to another given point?

Answers


There's no such thing as parallel or perpendicular "to a point".  A problem like that
will always want the new line to be parallel or perpendicular to another line.

-- If the new line is parallel to the given line, then they have the same slope.

-- If the new line is perpendicular to the the given line, then the slope of the
new line is [ 1 / slope of the given line ].

In either case, you now have the slope of the new line and a point on it. 
From there, you should have no trouble finding its equation.
Parallel is same slope.
Perpendicular is same slope but you have make it opposite and flip it.
For example if your slope is 2/3. For Perpendicular it would be - 3/2.

There is a sales tax of $24 on an item that costs $276 before tax. A second item costs $218.50 before tax. What is the sales tax on the second item?

Answers

We have to determine the tax rate first, from the first item


So, we must find what percent is $24 of $276.


24/276 * 100 = 8.7%


Now we will calculate the 8.7% tax on the second item with cost $218.50


0.087 * 218.50 = 19.00


So the sales tax on the second item is $19

What does m and b stand for in y=mx+b?

Answers

B is where the line crosses the y axis
its called slope-intercept form. m is the slope where the lines cross and b is the y- coordinate of the y-intercept.

Solve the following system:y = x + 3
2x + y = 9

(2, 5)
(5, 2)
(−2, 5)
(2, −5)

Answers

Hi,

y = x+3
2x+y = 9

2x+(x+3) = 9
2x+x+3 = 9
3x+3 = 9
3x = 9-3
3x = 6
x = 6/3
x = 2

y = x+3
y = 2+3
y = 5

Answer:

(x,y) = (2,5)
ahhh easy:) all we have to do is plug in y
sooo this question becomes 
2x + x + 3 = 9 
we add the xs and they become 3x
soooo
3x + 3 = 9 
now subtract 3 from both sides
3x +3 = 9 
     - 3 = -3 
they cancel out on the left hand side and the right side of the equal sign becomes a 6 
sooooo
3x = 6 
divide both sides by 3 
3x = 6 
÷3 = ÷ 3
the 3s on the left side cancel out
and the right side becomes 2
sooooo
x = 2 
but before we can answer this completely we plug it into our first equation
soooo
y = x + 3 
to this 
y = 2 + 3 
so y = 5
x = 2 
y = 5 
coordinates?
(2, 5)
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