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miv72 [106K]
3 years ago
11

OML HELP ME 19 and 20 Im going to cry :)

Mathematics
1 answer:
zimovet [89]3 years ago
5 0

Answer:

19. 125/3 20.625/3

Step-by-step explanation:The chance is 1/6 spins it will land on w so 1/6 times 250, 5/6 that it will not land on w so 5/6 times 250, and then you just simplify.

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What is the graph of the linear inequality y≤−3x+4?
tatiyna

Answer:

It would look like the picture I attached at the bottom.

Step-by-step explanation:

We know that the slope is -3 and the y intercept is (0,4) (plugging in 0 for x will get you that point), and then you can just graph an equation like you normally would, using rise/run to go down 3 units for every one unit you go right, and plugging in easy x values to check your work.

It gets a little tricky because the question then adds the inequality, and we see that y is now less than <em>or equal to </em>the original equation.

Since it is less than, we can shade all the values below the graph.

(Also, you should probably note for future reference that if it was just less than, the shading would look the same while the graph itself would be dotted because the values on the line are nor included in the solution set).

Desmos is a great website to use if you're having trouble graphing in the future :)

5 0
3 years ago
The intensity, or loudness, of a sound can be measured in decibels (dB), according to the equation I(dB)=10log[1/10], where I &a
Alexandra [31]
For this case we have the following equation:
 I(dB)= 10log(\frac{I}{I0})
 Where,
 I: <span>the intensity of a given sound
 I0: </span><span> the threshold of a hearing intensity
 </span>Substituting values in the given equation we have:
 <span />I(dB)= 10log(\frac{10^8I0}{I0})
 <span />Rewriting the equation we have:
 <span />I(dB)= 10log(10^8)
 <span />Then, by properties of logarithm we have:
 <span />I(dB)= 10(8)
 <span />Finally we have:
 <span />I(dB)=80
 <span />Answer:
 T
<span />he intensity, in decibles, [I(dB)], when I=10^8(I0) is:
 
D.80
8 0
4 years ago
Read 2 more answers
4.2 x -2.6 <br> A) 10.96 <br> B) -10.96<br> C) -109.6<br> D) -1.096
torisob [31]

Answer:

B.

Step-by-step explanation:

Hope this helps! Good Luck

5 0
4 years ago
How do u solve a=b+3(4-c)​
mario62 [17]

Answer:

5+3(4-2)

5+3x2

5+6

11

the answer is 11

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
4. When -2 is substituted for x, in the equation y=2x+1, what is y?<br> Show work.
Yakvenalex [24]
Plug in -2 for x. y = (2)(-2) + 1. y = -4 + 1. y = -3.
3 0
4 years ago
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