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Ivahew [28]
3 years ago
11

!!!! 10 points

Mathematics
1 answer:
saveliy_v [14]3 years ago
7 0
I think that the correct answer is C
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If the scale factor of a dilation is 0.5, then the image is enlarged. True or false.
emmasim [6.3K]
False.

The image will have dimensions that are 0.5 times those of the original.
4 0
4 years ago
NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW!!!!
Over [174]

9514 1404 393

Answer:

  b.  -150

Step-by-step explanation:

We usually take elevation to be positive above sea level, and negative below sea level. If the elevation is below sea level, it is negative. If it is within 200 ft of sea level, the magnitude of the negative number is 200 or less. That is, the elevation must satisfy ...

  -200 ≤ elevation < 0

The only answer choice in that range is -150.

Ethan's elevation in feet could be -150.

5 0
3 years ago
If f(2)=9 and f(-1)=14, write a linear function that fits this scenario. Be sure to use proper notation. HELP!!
olya-2409 [2.1K]

Answer:

The required linear function is: f(x) = $ \frac{-5}{3}x + \frac{37}{3} $

Step-by-step explanation:

We are given that f(x) is a linear function and it takes the value 9 when x = 2 and 14 when x = -1.

Now the general form of any linear function is: f(x) = ax + b.

Substituting these values in the general form we get:

f(2) = 9  = 2a + b

f(-1) = 14 = -a + b

Solving these two equations we get:

b = 37/3

Substituting this in the second equation to find 'a'.

a = -5/3

Therefore, the function f(x) = $ \frac{-5}{3} $x + $ \frac{37}{3} $.

4 0
3 years ago
Cesium-137 has a half-life of about 30 years. A) Find the annual decay rate and round final result to 4 decimal places. B) Find
MrMuchimi

Answer:

  • 0.0228
  • 0.0231
  • 100 years
  • 0

Step-by-step explanation:

The exponential equation for the fraction remaining after x years can be written as ...

  y = (1/2)^(x/30)

A) For x=1, the fraction remaining is ...

  y = (1/2)^(1/30) ≈ 0.97716 = 1 - 0.0228

Of the original amount, 0.0228 decays each year.

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B) The continuous decay rate is the natural log of the growth factor, so is ...

  ln(0.97716) = -0.0231

The continuous decay rate is 0.0231 of the present amount (per year).

__

C) For y=.10 (1/10 of the original amount) we find x to be ...

  .1 = .5^(x/30)

  ln(.1) = (x/30)ln(.5) . . . . . take the natural log

  30ln(0.1)/ln(0.5) = x ≈ 100 . . . years

It will take 100 years for a 10-gram sample to decay to 1 gram.

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D) As x goes to infinity, y goes to zero.

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The relationship between growth rate and growth factor is ...

  growth factor = 1 + growth rate

When the growth rate is negative, it is called a decay rate.

8 0
4 years ago
Pleasse help me with this
djverab [1.8K]

Answer:

Step-by-step explanation:

30% off of $18.00

so that makes the price $12.60

7 0
3 years ago
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