The sum of two numbers is 30 & their difference is 12.

Answers

Answer 1

Answer: x+y=30
x-y=12
add them together

x+y=30
x-y=12+
2x+0y=42

2x=42
divide 2
x=21

subsitute
x+y=30
21+y=30
subtrat 21
y=9

number sare 21 and 9

Answer 2

Answer: The answer is 21 and 9. You can use guess and check to solve this. If you add 21 and 9, the sum is 30, and if you subtract 9 from 21, the difference is 12.

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A cube with side length m has a volume of 343 cubic centimeters. The following equation shows the volume of the cube.m^3 = 343m What is the side length of the cube in centimeters?

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Answers

Answer:uh look up a video?

Step-by-step explanation:

In a certain math class, it is known that 18 students LOVE math review, and 5 students dislike math review. The teacher randomly selects three students from the class. What is the probability that all three students love math review?

Answers

The probability that the first random choice will be a matho-file and not a -phobe is 18/23. The probability of the second one is 17/22, and for the third one it's 16/21. The probability of all 3 is 4,896/10,626 = (18x17x16)/(23x22x21). That's 46.1% (rounded).

What is the excluded value?a/b-2

1. a=0
2. b=2
3. b=-2
4. none of the above

Answers

Answer: The correct option is (2) $b=2.$

Step-by-step explanation: We are given to find the exclude value for the following algebraic expression:

$E=(a)/(b-2)~~~~~~~~~~~~~~~~~~~~~~(i)$

We know that

for a rational expression, we must exclude those values for which the denominator of the fraction becomes zero.

So, in equation (i), the excluded value will be given by

$b-2=0\n\n\Rightarrow b=2.$

Thus, the required excluded value is $b=2.$

Option (2) is CORRECT.

b - 2 = 0 since you cannot divide by 0
b = 2 solve for b. this is where the function is undefined

Does anyone understand how to do this? Calculus AB

Answers

Hello,

In A
since
f'(x)=(f(x+h)-f(x))/h
f''(x=(f'(x+h)-f(x))/h

HELP ME PLS
GRADES ARE DUE TODAY

Answers

9514 1404 393

Answer:

see attached

Step-by-step explanation:

Most of this exercise is looking at different ways to identify the slope of the line. The first attachment shows the corresponding "run" (horizontal change) and "rise" (vertical change) between the marked points.

In your diagram, these values (run=1, rise=-3) are filled in 3 places. At the top, the changes are described in words. On the left, they are described as "rise" and "run" with numbers. At the bottom left, these same numbers are described by ∆y and ∆x.

The calculation at the right shows the differences between y (numerator) and x (denominator) coordinates. This is how you compute the slope from the coordinates of two points.

If you draw a line through the two points, you find it intersects the y-axis at y=4. This is the y-intercept that gets filled in at the bottom. (The y-intercept here is 1 left and 3 up from the point (1, 1).)

find the minimum value of p=10x+26y the constraints are x+y less than or equal to 6, 5x+y greater than or equal to 10, x+5y greater than or equal to 14