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melamori03 [73]
3 years ago
15

Can anybody please help me show my work for these problems....I have the correct answer just no work to prove it...

Mathematics
2 answers:
Anon25 [30]3 years ago
7 0
<span>1)
f(x) = x^2 + 2x
So lets replace all the x parts with (a-3) f(a-3) = (a-3)^2 + 2(a-3)
and the rest is just expanding it out from there.
</span>A: a^2-4a+3<span>

</span>2. If f(x0=x/x-3 and g(x)=2x-1, find (f-g)(x)
A: -2x^2+8x-3/x-3

3. If f(x)=x^2+1 and g(x)=1/x, find [f*g](x)
A:1/x^2 +1

4. Which equation best represents a line perpendicular to the graph of x+3y=9?
A:y=3x-1

5. Which of the following describes the graphs of 2x+5y=9 and 10x=4y+18?
A: perpendicular

6. Write the standard form of an equation of the line parallel to the graph of x-2y-6=0 and passing through A(-3,2)
 A: x-2y+7=0
Nikitich [7]3 years ago
5 0
I hope this helps you

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A rectangular piece of metal is 30 in longer than it is wide. Squares with sides 6 in long are cut from the four corners and the
snow_lady [41]

Answer = 55,25 inches

Solution -

let's take x as length and y as width of the metal piece. As per the question x is 30 more than y,

⇒ x = y + 30

Then four square pieces of side 6 are cut from each corner,

so the new length and width are

x-12 , y-12

Then the volume of the new box created will be

(x-12)(y-12)6

in the question the volume of the given figure is given to be 3354

so (x-12)(y-12)6 = 3354

putting the value of x in the the above equation

⇒ (y+30 - 12)(x-12) = 3354/6 = 559

⇒ (y+18)(y-12) = 559

⇒ y² + 6y - 775 = 0

⇒ y² + 31y - 25y -775 = 0

⇒ (y+31)(y-25) = 0

⇒ y = -31, 25

as length can not be -ve , so y = 25

then x = 25+30 = 55

Hence the dimensions of the metal piece are 55, 25 inches

3 0
3 years ago
Multiply or divide as indicated 10x^5/2x^2
shepuryov [24]
To perform the following operation, make sure to do the division parts separately and place them back together in the final answer.

10/2 and x^5/x^2

5 and using the exponential laws of division X ^m/X^n = X ^ m-n

The second part evaluates to X^3.

Putting the terms together we get the final answer, which is 5x^3.
3 0
3 years ago
What do I do in the right side column
KIM [24]
The same thing to the other side
8 0
3 years ago
Read 2 more answers
Mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
Dafna11 [192]

Answer:

54

Step-by-step explanation:

6 0
3 years ago
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Analyze the diagram below and complete the instructions that follow?
yan [13]

Answer:

The exact value of tan(M) is 5/12 ⇒ answer (C)

Step-by-step explanation:

* Lets revise the trigonometry functions

- In ΔABC

# m∠B = 90°

# Length of AB = a , length of BC = b and length of AC = c

# The trigonometry functions of angle C are

- sin(C) = a/c ⇒ opposite side to ∠C ÷ the hypotenuse

- cos(C) = b/c ⇒ adjacent side to ∠C ÷ the hypotenuse

- tan(c) = a/b ⇒ opposite side to ∠C ÷ adjacent side to ∠C

* Now lets solve the problem

- In ΔONM

∵ m∠N = 90°

∵ MN = 12

∵ ON = 5

∵ tan(M) = ON/NM ⇒ opposite side of ∠(M) ÷ adjacent side of ∠(M)

∴ tan(M) = 5/12

* The exact value of tan(M) is 5/12

6 0
3 years ago
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