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Vedmedyk [2.9K]
3 years ago
15

Find the least common denominator of 3/20 and 9/8

Mathematics
2 answers:
valentinak56 [21]3 years ago
4 0

Answer:

it is 40  soooo..... 6/40 and 45/40              

Tanya [424]3 years ago
3 0

Answer:

40

Step-by-step explanation:

To find the least common denominator, you find <em>the least common multiples of the denominators</em>, which in this case is <em>20 and 8</em>.

Tower method:

Start: |<u>20, 8</u>

4 |<u>20, 8 </u>-> 4 is a factor that 20 and 8 have in common

  5,   2   -> 20/4 = 5, 8/4 = 2, those numbers do not have a common factor.

4 * 5 * 2 = 40.

The fractions with 40 as its denominator is 6/40 and 45/40.

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Select ALL of the expressions equivalent to 4(7-6x)
Rom4ik [11]

Answer:

28-24x

Step-by-step explanation:

4(7-6x)= 28-24x

choices:

28-6x

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28-24x

6 0
3 years ago
50 POINTS. A ball is thrown into the air from a height of 4 feet at time t = 0. The function that models this situation is h(t)=
Morgarella [4.7K]

Answer:

The domain that makes sense for this function is all values greater than or equal to 0.

Step-by-step explanation:

A ball is thrown into the air from a height of 4 feet at time <em>t</em> = 0. It is modeled by the function:

h(t)=-16t^2+64t+4

The domain of the function is time <em>t</em>. The range of the function is the ball's height in the air <em>h</em>.

Since time is our domain, we must restrict our domain to values equal to or greater than 0 since time cannot be negative.

Therefore, the domain that makes sense for this function is all values greater than or equal to 0.

In interval notation, this is:

[0, \infty)

And as an inequality:

t\geq 0

7 0
3 years ago
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aniked [119]
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mezya [45]

Answer:

12.7

Step-by-step explanation:

Use the Pythagorean Theorem.

The wall and ground are the legs. The ladder is the hypotenuse.

a² + b² = c²

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b² = 161

b = √161 = 12.7

Answer: 12.7 ft

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