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3 years ago

Please help! I've been on this question for more than an hour...

Mathematics

1 answer:

alex41 [277]3 years ago

8 0

Answer:

1/6

Step-by-step explanation:

Out of these four card choices, for the first pick there are two even cards and four cards in total. This means that on the first pick there is a 2/4=1/2 chance that you pick an even card. On the second pick, if you do not replace the card, then there is 1 even card remaining, and 3 cards in total, leaving a probability of 1/3. Multiplying these two probabilities together, you get an overall chance of 1/6. Hope this helps!

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13. Find a four digit number that is divisible by 3, 5, and 8.

IRINA_888 [86]

Answer:

3×5×8=120

Step-by-step explanation:

divisibility and prime number

4 0

3 years ago

(dads age: 28 years old when cindys age : 2 years old .)

Delicious77 [7]

So dad=28
cindy=2
so 28-2=diffirance in age=26

A. dad-26=cindy
cindy=dad-26
dad=cindy+26
so since cindy=18
dad=18+26=44

B. if dad =42=cindy+26 so
42=x+26
subtract 26 from both sides
16=x
cindy =16 if dad =42

C. so the number of years apart they will be will always be 26 (until one of them dies)

4 0

4 years ago

How do I go about solving (27x^3/8y^9)^5/3? And what is the role of the numerator and denominator?

MrRissso [65]

$\left( \frac{27x^3}{8y^9}\right)^ \frac{5}{3} \\\\\\ =\left( \frac{(3x)^3}{(2y^3)^3}\right)^ \frac{5}{3} \\\\\\ = \frac{(3x)^{3 \times \frac{5}{3} }}{(2y^3)^{3 \times \frac{5}{3} }} \\\\\\ =\frac{(3x)^5}{(2y^3)^{5 }} \\\\\\ =\frac{243x^5}{32y^{15}}$

Now, If the exponent was negative like you asked....

$\left( \frac{27x^3}{8y^9}\right)^ {-\frac{5}{3}} \\\\\\ =\left( \frac{8y^9}{27x^3}\right)^ {\frac{5}{3}}\\\\\\ =\left( \frac{(2y^3)^3}{(3x)^3}\right)^ \frac{5}{3} \\\\\\ = \frac{(2y^3)^{3 \times \frac{5}{3} }}{(3x)^{3 \times \frac{5}{3} }} \\\\\\ =\frac{(2y^3)^{5 }}{(3x)^5} \\\\\\ =\frac{32y^{15}}{243x^5}$

5 0

3 years ago

Write and evaluate the expression. Then, check all that apply. eight increased by a number; evaluate when n = 5.3 F

Natasha_Volkova [10]

Answer:

A,B,D,E,H

Step-by-step explanation:

First, write an expression.

The correct expression is n + 8.

Second, substitute 5.3 for the variable, n.

Third, simplify by adding 5.3 and 8.

The answer is 13.3.

7 0

3 years ago

Read 2 more answers

A sedan will drive ten miles north, 15 miles east, 13 miles south, 15 miles west, and 22 miles north. The sedan gets 20 miles pe

jarptica [38.1K]

Answer:

There is enough fuel for the trip and the relative distance is 19 miles

Explanation:

Given Sedan drives

10 miles north

15 miles east

13 miles south

15 miles west

22 miles north

Then total distance = 10 + 15 + 13 + 15 + 22 = 75 miles

There are 5 gallons of gas left and sedan gets 20 miles per gallon

20 miles = 1 gallon

75 miles = 75/20 = 3.75 gallons

Gas left = 5 – 3.75 = 1.25 gallon

So, there is enough fuel for the trip

Relative distance = 10 (north) + 15 (east) – 13 (south) – 15 (west) + 22 (north) = 19 miles

7 0

3 years ago