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Anni [7]
3 years ago
7

Arianna bought 16 postcards during 4 days of vacation. How many days will Arianna have to spend on vacation before she will have

bought a total of 20 postcards? Assume the relationship is directly proportional
Mathematics
1 answer:
Stels [109]3 years ago
5 0

Answer:5 days

Step-by-step explanation:

16 divided by 4=4 postcards a day

20 divided by 4=5

5 days in total

hope this helps . Please mark brainliest

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There are 12 grams of protein 2 ounces of almond write if the relationship is proportional if so write an equation for the relationship.
12=2
6=1
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What is an equation of the line that passes through the points (−2,−3) and (−1,2)?
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Just graph is bruv. The app is called desmos
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3 years ago
Interpreting composite functions in the real world The volume of air in a balloon is represented by the function v(r)=4/3 ³, whe
adoni [48]

There are two <em>true</em> statements:

  1. When the function is composed with r, the <em>composite</em> function is V(t) = (1/48) · π · t⁶.
  2. V(r(6)) shows that the volume is 972π cubic inches after 6 seconds.

<h3>How to use composition between two function</h3>

Let be <em>f</em> and <em>g</em> two functions, there is a composition of <em>f</em> with respect to <em>g</em> when the domain of <em>f</em> is equal to the range of <em>g</em>. In this question, the <em>domain</em> variable of the function V(r) is replaced by substitution.

If we know that V(r) = (4/3) · π · r³ and r(t) = (1/4) · t², then the composite function is:

V(t) = (4/3) · π · [(1/4) · t²]³

V(t) = (4/3) · π · (1/64) · t⁶

V(t) = (1/48) · π · t⁶

There are two <em>true</em> statements:

  1. When the function is composed with r, the <em>composite</em> function is V(t) = (1/48) · π · t⁶.
  2. V(r(6)) shows that the volume is 972π cubic inches after 6 seconds.

To learn on composition between functions: brainly.com/question/12007574

#SPJ1

7 0
2 years ago
CD has endpoints C(-3, 4) and D(1, -2). Find the coordinates<br> of its midpoint.
Natalija [7]

Answer:

Midpoint (-1 , 1)

Step-by-step explanation:

Formula: (midpoint)

Let the point A(x , y) be the midpoint of CD.

x=\frac{x_c+x_D}{2} =\frac{-3+1}{2} =\frac{-2}{2} =-1

y=\frac{x_C + y_D}{2} =\frac{4+(-2)}{2} =\frac{2}{2} =1

Then

A(-1 , 1)

4 0
2 years ago
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37% of 293 estimate​
earnstyle [38]

Answer:

108.41

Step-by-step explanation:

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