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3 years ago

Simplify.(x-3)(x^2-4x-7)

Mathematics

2 answers:

Maru [420]3 years ago

7 0

Hello there,

Simplify.(x-3)(x^2-4x-7)

Quick Answer: x^3-7x^2+5x+21

Grace [21]3 years ago

4 0

Answer:

x^3-7x^2+5x+21

Step-by-step explanation:

To simplify the expression, apply the distributive property. The distributive property states to multiply each term in each parenthesis.

x*x^2=x^3

x*-4x=-4x^2

x*-7=-7x

-3*x^2=-3x^2

-3*-4x=12x

-3*-7=21

This gives the expression x^3-4x^2-7x-3x^2+12x+21. Combine like terms and get x^3-7x^2+5x+21.

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Work out the size of angle x.<br>X<br>140°<br>105°

yKpoI14uk [10]

Answer:

- 65

Step-by-step explanation:

x + 140 + 105 = 180

x + 245 = 180

x = 180- 245 = - 65

3 0

3 years ago

What is the answer? Please show work if possible.

vodka [1.7K]

Answer is d=2 1/3
Because find area of a triangle =1/2×b×h
U will get 7/3

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4 years ago

Read 2 more answers

Given that the product of 22 integers is equal to 1, prove that their sum is not equal to 0.

Kay [80]

1. If the product of these integers is to be 1, then all of them must be either 1 or -1.

2. Since the product is positive (+1), it must be that there are an *even* number of negative ones (-1), if any.

3. If the sum were 0 it would mean that the number of +1's must equal the number of -1's. So that means there would have to be exactly 22/2=11 of each.

4. But if there were 11 of each, that means the number of -1's would be *odd* and there's no way the product could be +1 (as stated in 2 above).

Hence, the sum is never 0, if the product of 22 integers is equal +1.

4 0

3 years ago

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What is five billion two hundred fifty four million seventy one thousand nine hundred twenty six written in standard form

lakkis [162]

5,254,071,926

Is the standard form

4 0

3 years ago

The data displayed by the graph indicate that in 2000,

MrMuchimi

Using an linear function, we find that by 2020 only 11% of all American adults believe that most qualified students get to attend college.

-----------------------------------------

A decaying linear function has the following format:

$A(t) = A(0) - mt$

In which

A(0) is the initial amount.
m is the slope, that is, the yearly decay.

In 2000, 45% believed, thus, $A(0) = 45$
Decaying by 1.7 each year, thus $m = 1.7$ .

The equation is:

$A(t) = 45 - 1.7t$

It will be 11% in t years after 2000, considering t for which A(t) = 11, that is:

$11 = 45 - 1.7t$

$1.7t = 34$

$t = \frac{34}{1.7}$

$t = 20$

2000 + 20 = 2020

By 2020 only 11% of all American adults believe that most qualified students get to attend college.

A similar problem is given at brainly.com/question/24282972

7 0

3 years ago