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Oduvanchick [21]
4 years ago
9

You take a three-question true or false quiz. You guess on all the questions. What is the probability that you will get a perfec

t score?
Mathematics
2 answers:
DedPeter [7]4 years ago
7 0
These are all independent events being that answering one question does not effect the other questions. Each question can be either true or false....so the probability of getting 1 correct is 1/2.

the probability of getting them all correct is : 1/2 * 1/2 * 1/2 = 1/8 <=
prisoha [69]4 years ago
4 0
It would be 1/8. 2 to the third is 8, and all three answers correct is one option.
You might be interested in
X^4+y + z^2 +6 whats the degree
saveliy_v [14]

Answer:

4

Step-by-step explanation:

The degree of a polynomial is the highest degree of its monomials (individual terms). In this case, the highest term is x^4, which means that this polynomial is a 4th degree polynomial.

Hope this helps!

6 0
4 years ago
Help please? its an exam
Nikolay [14]

Answer:

TU=4

Step-by-step explanation:

WU cuts the triangle in half (hint- angleTUW=90°)

so VU=TU

therefore, TU=4

5 0
3 years ago
A man purchased a magazine at the airport for $2.69. The tax on the purchase was $0.13. What is the tax rate at the airport? The
alexdok [17]

We need to find the percent, let's start but making the equation.

The price is 2.69

The tax cost is 0.13

So what percent of 2.69 is = 0.13.

Equation: X/100 x 2.69 = 0.13

Multiply each side by 100 so we can get x alone with the price: 2.69x = 13

Now to get x alone, we must divide both sides by 2.69: x = 4.8

Finally, we just round 4.8 to the nearest whole number, which is 5 (5 or above give it a shove, 4 or below let it go, we have 8 so we give it a shove). This means that the answer will be 5%.

I hope this helps! :)

6 0
3 years ago
lauren rode her bike from her house to a friend house 3 1/3 miles away. on the first leg of her trip she rode uphill at 3 miles
spayn [35]

The uphill part of the ride would have taken 16 minutes and 40 seconds.

This can be found first by determining how many miles Lauren went during the downhill portion. This can be found by multiplying the speed by the time.

5mph * .5hrs = 2 1/2 miles.

Now we can determine how far she needs to go during the uphill portion by subtracting the downhill portion from the entire ride.

3 1/3 miles - 2 1/2 miles = 5/6 miles.

Now that we know she needs to go 5/6 miles for the uphill portion, we can divide the distance by the speed.

5/6 miles / 3 mile per hour = 5/18 hours = 16.67 mins or 16 mins and 40 seconds.

6 0
4 years ago
If 5^n x 5^3 = 5^6, then n is _____.<br><br> A) 18<br> B) 2<br> C) 3<br> D) 9
Eddi Din [679]
<h3>Answer:  C) 3</h3>

The rule we'll use is a^b*a^c = a^(b+c). So we add the exponents.

That means 5^n*5^3 = 5^(n+3)

So 5^n*5^3 = 5^6 turns into 5^(n+3) = 5^6

The bases are equal to 5, so the exponents be equal to one another.

n+3 = 6

n+3-3 = 6-3

n = 3

So 5^3*5^3 = 5^(3+3) = 5^6.

6 0
3 years ago
Read 2 more answers
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