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3 years ago

Consider this expression. (x + 9)(x - 2) - 9x - 6 What is equivalent?

Mathematics

2 answers:

sweet [91]3 years ago

8 0

Answer:

We can find an expression equivalent to the one given by expanding the expression given,

$(x + 9)(x - 2) - 9x - 6\\x^2-2x+9x-18-9x-6\\x^2-2x-24$

So $x^2-2x-24$ is a possible expression.

kotykmax [81]3 years ago

7 0

Answer:=x2−2x−24

Step-by-step explanation:

=x2−2x−24

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In how many ways can Susan arrange 7 books into 5 slots on her bookshelf?

KatRina [158]

Answer:

2520

Step-by-step explanation:

This is permutation question

The formula for it:

N = b!/(b-s)!, where N- number of ways, b- number of books, s- number of slots

Finding the answer:

N = 7!/(7-5)! = 7!/2! = 7*6*5*4*3 = 2520

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3 years ago

In triangle ABC angle A=45 angle B =40 and a=7.Which equation should you solve to find b?

coldgirl [10]

We have been given that in triangle ABC angle A=45 angle B =40 and a=7. We are asked to find the equation that we can use to solve for 'f'.

We have two angles and opposite sides to these angles.

We will use Law of Sines to solve our given problem.

$\frac{a}{\sin(A)}=\frac{b}{\sin(B)}=\frac{c}{\sin(C)}$ , where a, b and c are opposite sides corresponding to angles A, B, and C respectively.

The angle opposite to side b is 40 degrees and angle opposite to side a is 45 degrees.

Upon substituting these values in Law of Sines, we will get:

$\frac{7}{\sin(45^{\circ})}=\frac{b}{\sin(40^{\circ})}$

Therefore, our required equation would be $\frac{7}{\sin(45^{\circ})}=\frac{b}{\sin(40^{\circ})}$ .

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4 years ago

Plz help, answer the question below

Afina-wow [57]

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3 years ago

victor is selling lemonade to raise money for his school the amount of money he collected from his sales each day is summarized

Kamila [148]

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3 years ago

Read 2 more answers

Find the composite function (please help)

anastassius [24]

Answer:

(f o h)(x) = -10x + 32

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Algebra I

Composite Functions

Step-by-step explanation:

Step 1: Define

f(x) = 2x³ + 8

h(x) = ∛(12 - 5x)

(f o h)(x) is f(h(x))

Step 2: Find Composite Function

Substitute: (f o h)(x) = 2(∛(12 - 5x))³ + 8
Evaluate: (f o h)(x) = 2(12 - 5x) + 8
Distribute 2: (f o h)(x) = 24 - 10x + 8
Combine like terms: (f o h)(x) = -10x + 32

And we have our final answer!

8 0

3 years ago