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Reika [66]
3 years ago
9

Tell whether each equation represents a direct variation. if so, identify the constant of variation.

Mathematics
1 answer:
Ivenika [448]3 years ago
7 0

Answer:

1. Not a direct variation

2. Direct variation (constant= -4)

3. Direct variation  (constant= -1)

Step-by-step explanation:

A direct variation is a function of the type

y = k*x, where k can be any real number

First case

1. y=4x+9  

The term 9 interferes with the expression (it creates an offset for the value)

2. 2y=-8x  

It is a direct variation, y = -4x

3. x+y=0

It is a direct variation, y = -x

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the length of each side is 3x-4
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When reading a word problem, there are clues that will help you to determine whether you need to find the surface area or the vo
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The options are as follows

(1) An object that is filled

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Answer:

(1) An object that is filled

(3)  An object that is solid

(4) Cubic units

Step-by-step explanation:

Clues that applies

(1) An object that is filled: By filling means that object has that amount of volume that is being filled completely.

(3) An object that is solid is likely a clue to finding the volume of an irregularly shaped solid.

(4) Cubic units, volume is measured in cubic units.

Clues that Doesn't Apply

(2) Covering the outside of an object is a clue to finding the surface area of an object.

(5) Square units is a measure of area not volume.

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3 years ago
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A watering can dispenses water at a rate of 0.40 gallon per minute. the original volume of water in the can was 10 gallons. whic
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Write each number in scientific notation.<br> 1. 160,000,000 <br> 2. 29,830<br> 3. 0.000350
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Answer:

1. 1.6x10 08

2. 2.983x10 04

3.  3.5x10 -04

Step-by-step explanation:

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3 years ago
M&amp;M plain candies come in various colors. According to the M&amp;M/Mars Department of Consumer Affairs, the distribution of
lyudmila [28]

Answer:

A) 0.12. Yes. Choosing a green and blue M&M is possible

B) 0.43. Yes. Choosing a yellow and red M&M is possible

C) 0.78

Step-by-step explanation:

First of all, the summation of the distribution of all colours is;

Σ(all colors ) = 22% + 20% + 23% + 10% + 6% + 6% + 13% = 100%, or 1.

Thus;

a) P(green candy or blue candy) is;

P(GREEN ∪ BLUE) = P(G) + P(BL)

P(GREEN ∪ BLUE) = 6%+6%

P(GREEN ∪ BLUE) = 12% or 0.12

Now, due to the fact that we have to choose ONE candy and only ONE candy at random, then they are mutually exclusive: Yes. Choosing a green and blue M&M is possible

b)P(yellow candy or red candy is;

P(YELLOW ∪ RED) = P(Y) + P(R)

P(YELLOW ∪ RED) = 20% + 23% = 43% or 0.43

Yes. Choosing a yellow and red M&M is possible

c) P(NOT PURPLE)

the probability of having a purple is;

P(PURPLE) = 22% or 0.22

So, the Probability of NOT having a PURPLE is 1 - 0.22 = 0.78

4 0
3 years ago
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