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Sergeeva-Olga [200]

1 year ago

15

To win a lottery, 7 numbers are drawn at random from a pool of 21 numbers. Numbers cannot repeat. If a person has one ticket,

what is the probability that they have the winning ticket?

2 answers:

zmey [24]1 year ago

8 0

the probability of having a winning raffle ticket is 15%.

Aleks04 [339]1 year ago

7 0

Answer:

the answer should be 3....this is not right btw

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What is the volume of the cone?

Ne4ueva [31]

Volume = 3.14xradius squared x height so it’s 3.14 x 6x6 x8 = 904.32

6 0

2 years ago

Solve the equatuon<br><br> x/2-(2/(x+1))=1<br><br> x=?

Snezhnost [94]

$\frac{x}{2}-\frac{2}{x+1}=1$

We have 2 denominators that we need to get rid of. Whenever there are the denominators, all we have to do is multiply all whole equation with the denominators.

Our denominators are both 2 and x+1. Therefore, we multiply the whole equation by 2(x+1)

$\frac{x}{2}[2(x+1)]-\frac{2}{x+1}[2(x+1)] = 1[2(x+1)]$

Then shorten the fractions.

$\frac{x}{2}[2(x+1)]-\frac{2}{x+1}[2(x+1)] = 1[2(x+1)]\\x(x+1)-2(2)=1(2x+2)$

Distribute in all.

$x^2+x-4=2x+2$

We should get like this. Because the polynomial is 2-degree, I'd suggest you to move all terms to one place. Therefore, moving 2x+2 to another side and subtract.

$x^2+x-4-2x-2=0\\x^2-x-6=0\\$

We are almost there. All we have to do is, solving for x by factoring. (Although there are more than just factoring but factoring this polynomial is faster.)

$(x-3)(x+2)=0\\x=3,-2$

Thus, the answer is x = 3, -2

7 0

2 years ago

-(1+7x)=6(-7-x)+36 <br> Alg 2

olganol [36]

Let's solve your equation step-by-step.

−(1+7x)=6(−7−x)+36

Step 1: Simplify both sides of the equation.

−(1+7x)=6(−7−x)+36

−7x+−1=(6)(−7)+(6)(−x)+36(Distribute)

−7x+−1=−42+−6x+36

−7x−1=(−6x)+(−42+36)(Combine Like Terms)

−7x−1=−6x+−6

−7x−1=−6x−6

Step 2: Add 6x to both sides.

−7x−1+6x=−6x−6+6x

−x−1=−6

Step 3: Add 1 to both sides.

−x−1+1=−6+1

−x=−5

Step 4: Divide both sides by -1.

−x

−1

=

−5

−1

x=5

Answer:

x=5

7 0

2 years ago

Suppose 20 rabbits are taken to an island. the rabbit population then triples every year. the function f(x)

Zanzabum

$f(x) = 20*3^x$ $f(x) = 20*3^x$

hope this helps!

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5 0

2 years ago

WHAT WOULD THIS BEEE ANYONE !

deff fn [24]

Answer:

it's c

Step-by-step explanation:

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2 years ago

Read 2 more answers