2 years ago

Please Help Me. Add (2x^2+4−x^3)+(−4x^2+6x^3−2) Express the answer in standard form. Enter your answer in the box.

Mathematics

1 answer:

GaryK [48]2 years ago

3 0

Answer:

2x³ - 2x² - 2

Step-by-step explanation:

Step 1: Rewrite expressions

2x² - 4x³ - 4x² + 6x³ - 2

Step 2: Combine like terms

2x³ - 2x² - 2

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3. Is XY Tangent to circle Z? Y 12 X (20 Z 18

Ratling [72]

Answer:

XY is a tangent

Step-by-step explanation:

Given

$XY = 12$

$WY = 20$

$WZ = 8$

Required

Is XY a tangent?

XY is a tangent if:

$WY^2 = XY^2 + WX^2$

Because XY should make a right angle at point X with the circle

Where

$WX = 2 * WZ$

So, we have:

$WY^2 = XY^2 + WX^2$

$WY^2 = XY^2 + (2*WZ)^2$

$WY^2 = XY^2 + (2WZ)^2$

$WY^2 = XY^2 + 4WZ^2$

This gives:

$20^2 = 12^2 + 4*8^2$

$400 = 144 + 256$

$400 = 400$

Yes, XY is a tangent

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2 years ago

How much of each ingredient will Mrs. Roberts need in order to make 200 servings? Show or explain the steps you used to answer t

vitfil [10]

Pretzels:2×200=400 200×1/2=100 100+400=500cups
Dry Cereal: 4×200=800 200×1/2=100 800+100=900cups
Peanuts:2×200=400 200×1/4=50 400+50=450cups
Raisins:200×3/4=150cups

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3 years ago

What is the value of x in the equation 1 x – 8 = 4x + 12?

Bess [88]

Answer:

The value of x is -20/3.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

17 = x + 3 Someone teach me how to do this

faust18 [17]

Answer:

x=14

Step-by-step explanation:

17=x+3

-3 -3

14=x

subtract 3 on both sides

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3 years ago

scott can reach 57 inches high. scott stands on box that is 16 inches high how many inches high can scott reach now?

kompoz [17]

Answer: 73 inches high

Step-by-step explanation: 57+16=73

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3 years ago