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kvasek [131]
3 years ago
5

Given the function ƒ(x) = 3x + 5, find ƒ(4) and x such that ƒ(x) = 38.

Mathematics
1 answer:
MissTica3 years ago
5 0

Answer: A.17;11

f(4)= 3(4) + 5

=12 + 5

=17

And, f(x)= 38

=>3x+5=38

=>3x= 38-5

=>3x=33

=>x = 33÷3

=>x = 11

So, A.17;11

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Answer:

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Step-by-step explanation:

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A palm tree casts a shadow that is 28 feet long. A 6-foot sign casts a shadow 8 feet long.
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Answer: The height of the palm tree is 21 feet.

Step-by-step explanation:

We can use a ratio to solve this:

Actual height to shadow for both objects. The fraction equivalents must be equal.

6/8 = x/28 . Cross multiply

6(28) = 8x

168 = 8x   Divide both sides by 8  (8's "cancel" on the right)

168/8 =8x/8

21 = x . This gives us the tree's height as 21 feet.

<em>Another way to solve this is to use the ratios, but simplify the first fraction</em>

<em>6/8 = 3/4</em>

<em>Then multiply the length of the shadow by 3/4</em>

<em>3/4 × 28 = height</em>

<em>28÷4 = 7    7 × 3 = 21</em>

<em>21  feet= the height of the palm tree.</em>

3 0
3 years ago
Please help me solve this!
Luba_88 [7]

Answer:

Step-by-step explanation:

A complete circle has 360 degrees

So

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332 + b = 360                       Subtract 332 from both sides

b = 360 - 332

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2 years ago
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Where are the graphs?

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