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stepan [7]
3 years ago
10

Expand and simplify (x+3) (x-4)

Mathematics
2 answers:
lisov135 [29]3 years ago
5 0

Answer:

Step-by-step explanation:

=x^2-x-12

oksano4ka [1.4K]3 years ago
3 0

Answer:

x^2-x-12

Step-by-step explanation:

You can use the formula of FOIL, you go to each factor in the parenthesis and multiply by the other factors, the inside will first be x^2 then the middles will be 3x and -4x and the outside will be -12 then you simplify by combining like terms making the middle -x.

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if a number line plot starts from 2 (including the point) and extends towards positive infinity, the corresponding inequality is
murzikaleks [220]

Answer:

2 \leqslant y \leqslant  \infty

Step-by-step explanation:

y is equal to 2 and goes up to infinity

6 0
2 years ago
Multiply. 1 1/2 x 3 2/3
sasho [114]

Answer:

5.5

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
The average age of 6 men is 35 years and
PSYCHO15rus [73]

Answer:

39.50

42.50

Step-by-step explanation:

Age of the 2 men = sum of the ages of the 6 men - sum of the ages of the 4 men

Average = sum of ages / total number of men

35 = sum of ages / 6

sum of ages = 35 x6 = 210

32 = sum of ages / 4

32 x 4 = sum of ages

128

210 - 128 = 82

age of the younger man = x

age of the older man = 3 + x

x + 3 + x = 82

2x + 3 = 82

2x = 82 - 3

2x = 79

x = 79/2 = 39.5

older man = 39.5 + 3 = 42.50

7 0
2 years ago
PLEASE HELP WILL GIVE POINTS
Alexxx [7]

The rate of change is meaning the slope. The slope of A is 8, therefore, the answer would be 7.

hope this helps :)

3 0
2 years ago
B. Why does using FOIL on polynomial expressions match so closely to integer
Anastasy [175]
FOIL is a mnemonic rule for multiplying binomial (that is, two-term) algebraic expressions.
FOIL abbreviates the sequence "First, Outside, Inside, Last"; it's a way of remembering that the product is the sum of the products of those four combinations of terms.

For instance, if we multiply the two expressions
(x + 1) (x + 2)
then the result is the sum of these four products:
x times x (the First terms of each expression)
x times 2 (the Outside pair of terms)
1 times x (the Inside pair of terms)
1 times 2 (the Last terms of each expression)
and so
(x + 1) (x + 2) = x^2 + 2x + 1x + 2 = x^2 + 3x + 2
[where the ^ is the usual way we indicate exponents here in Answers, because they're hard to represent in an online text environment].

Now, compare this to multiplying a pair of two-digit integers:
37 × 43
= (30 × 40) + (30 × 3) + (7 × 40) + (7 × 3)
= 1200 + 90 + 280 + 21
= 1591

The reason the two processes resemble each other is that multiplication is multiplication; the difference in the ways we represent the factors doesn't make it a fundamentally different operation.
7 0
3 years ago
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