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kari74 [83]
3 years ago
9

What is the value of 2^3+5^2

Mathematics
1 answer:
lakkis [162]3 years ago
5 0

Answer: The value of 2^3+5^2 is 18.

Step-by-step explanation:

2^3 = 2 × 2 × 2 = 8

5^3 = 5 × 2 = 10

10 + 8 = 18

I hope this helped! :D

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A fair coin is flipped twelve times. What is the probability of the coin landing tails up exactly nine times?
seraphim [82]

Answer:

P\left(E\right)=\frac{55}{1024}

Step-by-step explanation:

Given that a fair coin is flipped twelve times.

It means the number of possible sequences of heads and tails would be:

2¹² = 4096

We can determine the number of ways that such a sequence could contain exactly 9 tails is the number of ways of choosing 9 out of 12, using the formula

nCr=\frac{n!}{r!\left(n-r\right)!}

Plug in n = 12 and r = 9

       =\frac{12!}{9!\left(12-9\right)!}

       =\frac{12!}{9!\cdot \:3!}

       =\frac{12\cdot \:11\cdot \:10}{3!}            ∵ \frac{12!}{9!}=12\cdot \:11\cdot \:10

       =\frac{1320}{6}                   ∵ 3!\:=\:3\times 2\times 1=6

       =220

Thus, the probability will be:

P\left(E\right)=\frac{n\left(E\right)}{n\left(S\right)}

         =\frac{220}{4096}

         =\frac{55}{1024}

Thus, the probability of the coin landing tails up exactly nine times will be:

P\left(E\right)=\frac{55}{1024}

4 0
3 years ago
Please help
Vlada [557]

We know that

When we have

f(x)=ax^2 +bx+c

Here ,

a is the leading coefficient

c is the constant term

so, we can compare it with

f(x)=5x^2-7x+6

so, we get

a=5,c=6

so,

leading coefficient is 5

constant term is 6......................Answer

4 0
4 years ago
2/3=x/6=9/y to find the value of y in this proportion you must divide 54 by
scZoUnD [109]

Answer:

You must divide 54 by 4

Step-by-step explanation:

we have

\frac{2}{3}=\frac{x}{6}=\frac{9}{y}

Step 1

Solve for x

\frac{2}{3}=\frac{x}{6}

3x=6*2\\x=12/3\\x=4

Step 2

Find the value of y

\frac{x}{6}=\frac{9}{y}

Substitute the value of x

\frac{4}{6}=\frac{9}{y}

4y=9*6\\y=54/4\\y= 13.5

therefore

You must divide 54 by 4

6 0
3 years ago
Read 2 more answers
The cost of a canoe rental is $15 deposit plus $6 per hour.The total rental cost is​
Scrat [10]

Answer:

its 90

Step-by-step explanation:

3 0
3 years ago
7x(-3) x (-2)^2<br> help please!
Anvisha [2.4K]
    [7×(-3)]   ×   (-2)²
=     (-21)    ×    4
=             -84
5 0
4 years ago
Read 2 more answers
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