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Nikitich [7]
3 years ago
15

What is the ratio? please answer quickly!!!!!

Mathematics
1 answer:
Kazeer [188]3 years ago
6 0

Answer:

3:1

Step-by-step explanation:

If you look at the sides, they all have the same factor of three, and dividing by three gets you to the smaller rectangular prism.

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One brand of cereal sells for $2.89 for 9 ounces. What is the unit
gulaghasi [49]
The answer would be B $4.29
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4 years ago
10(-8f +1) – 8(6 f – 4)
goldenfox [79]

Answer:

2(- 64f + 21)

Step-by-step explanation:

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3 years ago
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I am so confused on what to do with fractions.
Arada [10]

Using the power rule for differentiation, the first derivative of

f(x) = -x^{\frac12}

is

f'(x) = -\dfrac12 \cdot x^{\frac12-1} = -\dfrac12 x^{-\frac12}

and the second derivative is

f''(x) = -\dfrac12 \cdot \left(-\dfrac12 \cdot x^{-\frac12 - 1}\right) = \dfrac14 x^{-\frac32}

which makes E the correct choice.

6 0
3 years ago
The sides of a triangle have lengths x, x+4, and 20. If the length of the longest side is 20, what values of x make the triangle
harina [27]

Answer:

12 < x < 16

What we know:

  • The longest side of the triangle is 20, another side length is 'x + 4'
  • Since the triangle is acute, we know that the value of 'x' will have to be <u>greater than its right triangle value</u> because whatever 'x' equals will result in a <em>right </em>triangle, not an acute one
  • We must solve for the <em>right </em>triangle first in order to determine the acute triangle

Solving for 'x' in the right triangle:

  1. a^2 + b^2 = c^2
  2. (x+4)^2 + x^2 = 20^2
  3. x^2 + x^2 + 8x + 16 = 400
  4. 2x^2 + 8x - 384 = 0
  5. simplify x^2 + 4x - 192 = 0
  6. factor (x + 16) (x - 12) = 0
  7. solve for each 'x' x + 16 = 0 & x - 12 = 0
  8. x = -16 & x = 12
  9. check the value of 'x' cannot be negative, so it is not -16. this means the value of 'x' is 12
  10. the value of 12 for 'x' makes a <em>right triangle, </em>so that is not the answer. this means the the value of 'x' needs to be <em>greater</em> than 12

<u>Checking your answer:</u>

  • original equation (x + 4)^2 + x^2 = 20^2
  • with answer (12 + 4)^2 + (12)^2 = 20^2
  • (16)^2 + (12)^2 = 20^2
  • 256 + 144 = 400
  • 400 = 400 this is true, so the answer of 'x = 12' is <em>correct </em>for making it into a <em>right triangle</em>

<em></em>

Solving for 'x' in the acute triangle:

  1. x = 12 makes a right triangle
  2. x > 12 minimum for an acute triangle
  3. what is the maximum value for 'x' in the acute triangle? take the two other side lengths --> (x + 4) < 20 (longest side, so it will be the greater number)
  4. simplify x < 16
  5. x < 16 maximum for an acute triangle

Conclusion:

  • if 'x = 12' makes a right triangle, then 'x > 12' and 'x < 16' are the values that will make it acute
  • answer 12 < x < 16
6 0
3 years ago
Is 1,200 ft below sea level positive integer, zero, or negative integer ?
Sauron [17]

Answer:

It’s a negative integer

Step-by-step explanation:

5 0
3 years ago
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