Whoever answers this question first gets brainly 2

Mathematics

1 answer:

Margaret [11]2 years ago

7 0

Answer:

1,120

Step-by-step explanation:

180/12=15

for every 15 frogs there would be one with spots

1,200/15=80

1,200 - 80=1,120

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You have $550 in a savings account that earns 3% simple interest each yaer. How much will be in your account in 10 years?

bija089 [108]

Looking at the given question, we can find several important information's and based on thm we can easily calculate the amount after 10 years.
Principal amount = $550
Rate of interest per year = 3%
Number of years the amount is to be kept = 10 years
Now we get put these information's in the formula of finding amount of money kepy in simple interest.
Amount = P(1 + rt)
Where
p = principal amount
r = rate of interest
t = Time
Then
Amount = 550[1 + (3/100) * 10)]
   = 550 [1 + 3/10]
   = 550 * (13/10)
   = 55 * 13
   = 715 dollars
So the total amount in my account will be $715

4 0

2 years ago

Rebecca has 12 photos she wants to hang side by side on her wall.A. If she only wants to display 8 of the photos, in how many wa

Mariana [72]

If she will choose 8 from 12 photos, the total number of ways she can choose is given by a combination of 12 choose 8, since the order of the photos doesn't matter.

The formula for a combination of n choose p is:

$C(n,p)=\frac{n!}{p!(n-p)!}$

For n = 12 and p = 8, we have:

$C(12,8)=\frac{12!}{8!(12-8)!_{}}=\frac{12\cdot11\cdot10\cdot9\cdot8!}{8!\cdot4!}=\frac{12\cdot11\cdot10\cdot9}{4\cdot3\cdot2}=495$

So there are 495 ways.

If she wants to arrange the 12 photos, the total number of ways is given by the factorial of 12:

$12!=12\cdot11\cdot10\cdot9\cdot8\cdot7\cdot6\cdot5\cdot4\cdot3\cdot2=479001600$

There are 479,001,600 ways.

Since 10 photos already have specific places, we need to calculate the number of ways to arrange the other two photos in the two remaining places.

In this case, there are only 2 ways of organizing the remaining two photos:

Photo 1 first, photo 2 last, or photo 1 last and photo 2 first.

6 0

11 months ago

Please help me with this question.

xeze [42]

Answer: -3 4/15
Explanation: Combine multiplied terms into a single fraction

Subtract 3 from both sides of the equation

Simplify

Multiply all terms by the same value to eliminate fraction denominators

Simplify

End Up With -52/15

Turn into a equivalent fraction

End Up With -3 4/15

5 0

2 years ago

A tutor earn 25 dollars how much will she earn if she tutors for 4 hours

Andre45 [30]

If it is $25 per hour then $100 for 4 hours

7 0

2 years ago

Read 2 more answers

1. <br> Solve by factoring.<br><br> 2x2 − x = 3

Nina [5.8K]

Answer:

$2x^2-x = 3 \\2x^2-x-3 = 0\\(x+1)(2x-3)=0$