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Related Questions
There are 10 doors to a coliseum. In how many ways can a person go in and out if one can enter any door but leave using another door? Use permutation formula (P(n,r)) to solve.
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Answer:
90 is the answer
Step-by-step explanation:
P(10,2) = [tex]\frac{10!}{(10-2)!}[/tex] = [tex]\frac{10!}{8!}[/tex] = [tex]\frac{10x9x8!}{8!}[/tex]
10x9
=90
The number of ways should be 90.
Calculation of no of ways:Since There are 10 doors to a coliseum.
So, here we used the permutation
[tex]= \frac{10!}{(10!-2!)}\\\\ = \frac{10!}{8!} \\\\= \frac{10\times 9\times 8!}{8!} \\\\= 10\times 9[/tex]
= 90
Learn more about permutation here: https://brainly.com/question/14767366?referrer=searchResults
Given that 3^-n=0.2
Find the value of (3^n)^2
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Step-by-step explanation:
3^-n=0.2
1/3^n=0.2
1=0.2(3^n)
3^n=1/0.2
3^n=5
(3^n)²=5²
(3^n)²=25
The value of the given expression (3^n)^2 is; 25.
Evaluating the value of an expressionFrom the task content, it follows that;
3^-n=0.21/3^n=1/5On this note; it follows that; 3^n = 5.
Consequently, the value of the expression (3^n)^2 is; (5)²
The value of the expression; (3^n)^2 is; 25.
Read more on value of expressions;
https://brainly.com/question/671415
suppose that 12 dimes and nickels are worth 95 cents. how many dimes and nickels are there? use systems of equations to solve.
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Answer:
7 dimes and 5 nickles
Step-by-step explanation:
7 times 10 equals 70 5 times 5 equals 25. 70 plus 25 equals 95
Help please . Thank you !!
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Answer:
A=25m
Step-by-step explanation:
uh yeahhhhhhhhh you see it
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Answer:
1296
Step-by-step explanation:
Answer:
what they said. jk i actually don't know if they're correct
Step-by-step explanation:
Find the slope of through the two points (3,4) and (-2,3).
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Answer:
Slope is 1/5
Step-by-step explanation:
m = (y2 - y1)/ (x2 - x1)
m = (3-4)/(-2-3)
m = (-1)/(-5)
m = 1/5
Help! I just need someone to check if this answer is indeed correct, I believe it is, but I just would prefer having a second opinion!
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Answer:
Step-by-step explanation:
Yes
triangle PQR with side p across from angle P, side q across from angle Q, and side r across from angle R
HELP PLEASE I COULDN'T FIND THE ANSWER ANYWHERE
If ∠R measures 18°, q equals 9.5, and p equals 6.0, then which length can be found using the Law of Cosines?
1. p
2. q
3. RQ
4. PQ
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I hope this helps
Answer:
P
Step-by-step explanation:
What percent of 54 is 28?
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Answer:
51.85
Step-by-step explanation:
hope this helps lol
51.85
Percentage Calculator: 28 is what percent of 54? = 51.85.
Five students bought supplies. Three students each bought 3 pencils and an eraser. Two students each bought a pen and 2 pencils. Supply Cost pencil $0.16 eraser $0.56 pen $0.45 Select the equation that can be used to find the total cost (c) of the supplies. Mark all that apply.
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Answer:
(5×0.16)+ (1× 0.56) +(1 ×0.45)
find the values of b that make x^2+bx+1 a perfect square
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Answer:
(x+1)^2 = x^2 + 2x +1
so b =2
Step-by-step explanation:
Need help fast for 1 2 3 and 4 for please and thank you
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The formula for the area of a circle is [tex]\pi r^2[/tex]
So if we have the first one...[tex]3.14*5^{2}[/tex]≈78.5
Now you can solve the other ones with this formula! Good luck!
can someone help???????????
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Answer:
B. is the correct answer
pls help with this problem
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Answer:
2
Step-by-step explanation:
Isolate the variable:
6x - 5 = 7
+5 +5
6x = 12
/6 /6
x = 2
Check our work:
6(2) - 5 =7
12 - 5 = 7
7 = 7
Correct!
Pythagorean Theorem Word Problems Mazel
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He wants to wrap the present. How much wrapping paper does he need if it’s 1:00 in the afternoon and he wants to give it to her at 5:00pm?
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1. Marcus needs to bike at least 80 miles this week for his training. If he has already biked 25
miles this week, then how many miles should he bike on each of the 5 remaining days this week?
Variable:
Inequality:
Solution:
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Answer:
There someone already asked the question
hii please help i’ll give brainliest!!
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Answer:
D
Step-by-step explanation:
When you hit your brakes hard it will move then stop immeaditly. But when you barley push the brakes it come to a steady stop.
help please ill give brainliest
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Please answer the question above.
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Answer:
∠2 = 80°
Step-by-step explanation:
∠1 and ∠2 are supplementary angles (their sum is 180°)
4. Write the ratio for cos M.
cos M = 24/25
cos M = 12/25
cos M = 24/7
cos M = 25/24
Answers
Answer:
24/25
Step-by-step explanation:
Hello There
[tex]cos = \frac{adjacent}{hypotenuse} [/tex]
The adjacent of M is 24 and the hypotenuse is 25 so
[tex]cosm = \frac{24}{25} [/tex]
Answer:
cos M= base/hypotenuse=KM/LM=24/25
Please help me I beg. :)
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Answer:
A and D are correct
Answer:
A and D
Step-by-step explanation:
Basically, having in mind that the earth is a sphere and the sunlights have the same length, the poles are more distant from the sunlights than the lower parts.
A river 3m deep and 40 m wide is flowing at the rate 2km /h . how much water will fall into the sea in a minute.
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Answer:
Area of river = depth × width
=3×40
[tex] = 120 {m}^{2} [/tex]
amount of water that falls into the sea ⇒
Area of river × flow rate
[tex]120 {m}^{2} \times 2 \: \frac{km}{hr} [/tex]
[tex]120 \times \frac{2 \times 1000 {m}^{2} }{(60)min} [/tex]
[tex]4000 \: \frac{ {m}^{3} }{min} [/tex]
:. [tex] {4000m}^{3} [/tex] of water falls into the sea per min.
So, [tex] {4000m}^{3} [/tex]
= 4000 × 1000 litres
= 4000000 litres
So, in 1 minute, water will fall into the sea is 4000000 litres.
Step-by-step explanation:
Hope it is helpful....
A 2-kilogram bag of flour costs $4.70. What is the unit price?
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Answer:
$2.35
Step-by-step explanation:
4.70/2= 2.35
what is the 3rd root of -125
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Answer:
-5
Step-by-step explanation:
dkfnfjdksknfmdmcnc
which of the following statements describe the system ?
Answers
Answer:
one solution
Step-by-step explanation:
here, we want to select the correct option
From the system, we have two values of y
Equating the y-values
3x + 2 = -2x - 1
What this mean is that there is only a particular point where this solution will work and as such, the system has one solution
PLSS HELP ME ASAP I WILL EVEN GIVE U BRAINLYEST BUT PLAA HELP ME!!
Is the probability of red a simple event, complement of a
simple event, or neither?
A. complement of a simple event
B. nelther
C. simple event
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Answer:
Complement of an Event: All outcomes that are NOT the event. So the Complement of an event is all the other outcomes (not the ones we want). And together the Event and its Complement make all possible outcomes.
the perimeter of a rectangle is at least 74 cm the length of a rectangle is two more than four times the width of a rectangle what are the minimum dimensions of the rectangle
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Answer:
2W+2L=perimeter=74
Step-by-step explanation:
2W=74-2L
2(2W)+2(L/2)=76
substitute 74 - 2L for 2W in the last equation to solve for L. Put that value in the first equation to find W. Check by putting both values into the last equation.
please help quick add egbtfdghy
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Answer:
The second option is correct.
Step-by-step explanation:
If x = 5, then this happens.
1(5) - 2 < 3
5 - 2 < 3
3 < 3
That is incorrect because 3 = 3.
The second option is correct, because:
4 - 2 < 3
2 < 3
This work so the second option is correct
6(10 - w) when w = 7
Show your work
Answers
Answer:
18
Step-by-step explanation:
you always do the parenthesis first
10-7=3
6x3=18