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den301095 [7]
3 years ago
13

If a skateboarder performs 20 tricks during practice and 45% of the tricks are heelflips, how many heelflips does the skateboard

er perform?
Mathematics
1 answer:
Airida [17]3 years ago
4 0
The skateboarder would have performed 9 heel flips. .45 is 45% turned into a decimal. if you multiply .45 by the number of tricks he performed, you get 9!
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A water container holds 2 liters. How many
EastWind [94]

Number of containers for 2 litres of water = 1

So, number of containers for 1 litre of water = ½

So, number of containers for 30 litres of water

= ½ × 30

= 30/2

= 15

So, 15 of these containers would be needed to fill a 30-liter drum.

5 0
3 years ago
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<img src="https://tex.z-dn.net/?f=%284%20%2B%206i%29%20%7B%7D%5E%7B2%7D%20" id="TexFormula1" title="(4 + 6i) {}^{2} " alt="(4 +
34kurt

Answer:

36i^{2}+48i+16

Step-by-step explanation:

(4+6i)^{2} is essentially (4+6i)(4+6i) (you are squaring (4+6i), so multiplying it by itself), so to simplify, you would need to distribute.

A good way to go about this is using the F.O.I.L. method, multiplying the First numbers in the parentheses, then the Outers, then Inners, and finally, Lasts.

(4+6i)(4+6i) >> (4+6i)(4+6i) >> (4+6i)(4+6i) >> (4+6i)(4+6i)

((4*4)+(4*6i)+(6i*4)(6i*6i))

After doing so, you would end up with 16+24i+24i+36i^{2}, and after combining like terms, 16+48i+36i^{2}.

To write the expression in standard form, though, just order the terms from highest to lowest power!

5 0
2 years ago
Write <br> 1<br> 16<br> as a decimal.<br><br> A) 0.00625 <br> B) 0.0625 <br> C) 0.625 <br> D) 6.25
xenn [34]

Answer:

b) 0.0625

Step-by-step explanation:

3 0
3 years ago
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Paul [167]

p.s. Excuse the scribble.

Step-by-step explanation:

This is a piece-wise function. The three intervals we need to worry about are [0, 1), [1,2], and [2,4].

Separate the functions into their pieces and draw out the individual graphs. Place them together onto the graph within their respective intervals.

5 0
2 years ago
Help what is 1/3 to decimal
sleet_krkn [62]

Hey there! I'm happy to help!

To turn a fraction into a decimal, you simply divide the numerator by the denominator!

1÷3=0.3333333333.... (the 3s never end!)

Have a wonderful day! :D

4 0
3 years ago
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