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Burka [1]
3 years ago
7

There are a total of 20 students. In a classroom, the probability that the teacher chooses a boy from 20 students is 0.45. How m

any students are not boys
Mathematics
1 answer:
jasenka [17]3 years ago
6 0
.45= 45%
100%(total)-45%(boys)=55%(or .55; not boy)
%*Total=Part
.55*20=11
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Solve the following absolute value equations. Show the solution set and check your answers. |0.3-3/5k|-0.4=1.2
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Answer:

**The equation is not clear, so I have provided both options**

<h3><u>Option 1</u></h3>

\left|0.3-\dfrac{3}{5}k\right|-0.4=1.2

\implies \left|0.3-\dfrac{3}{5}k\right|=1.6

<u>Solution 1</u>

\implies 0.3-\dfrac{3}{5}k=1.6

\implies -\dfrac{3}{5}k=1.3

\implies k=-\dfrac{13}{6}

<u>Solution 2</u>

\implies -(0.3-\dfrac{3}{5}k)=1.6

\implies -0.3+\dfrac{3}{5}k=1.6

\implies \dfrac{3}{5}k=1.9

\implies k=\dfrac{19}{6}

<h3><u>Option 2</u></h3>

\left|0.3-\dfrac{3}{5k}\right|-0.4=1.2

\implies \left|0.3-\dfrac{3}{5k}\right|=1.6

<u>Solution 1</u>

\implies 0.3-\dfrac{3}{5k}=1.6

\implies -\dfrac{3}{5k}=1.3

\implies -3=6.5k

\implies k=-\dfrac{6}{13}

<u>Solution 2</u>

\implies -(0.3-\dfrac{3}{5k})=1.6

\implies -0.3+\dfrac{3}{5k}=1.6

\implies \dfrac{3}{5k}=1.9

\implies 3=9.5k

\implies k=\dfrac{6}{19}

6 0
1 year ago
18 is what percentage of 25
pentagon [3]

Answer:

Step-by-step explanation:

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3 years ago
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3 years ago
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NNADVOKAT [17]

Given data:

The first point given iis (a, b)=(-6,2).

The second point given is (c,d)=(0, -6).

The expression for the slope is,

m=(d-b)/(c-a)

Substitute the given points in the above expression.

m=(-6-2)/(0-(-6))

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Thus, the slope of the line is -4/3, so (C) option is correct.

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The answer to this, your question is                                                                               h = -16t • 2 + 48t + 6
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