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hjlf
3 years ago
10

Sierra's karate class lasts 56 day. how many weeks does the class last?​

Mathematics
2 answers:
pantera1 [17]3 years ago
6 0
A week is equal to 7 days, so you have to divide 56 by 7. Sierra’s karate class lasts 8 weeks.
UkoKoshka [18]3 years ago
5 0

Answer: 8 Weeks

Step-by-step explanation:

One week is 7 days so if you divide 56 by 7 you get 8

56/7=8

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Math help please <br><br> Thanks <br> A lot
babunello [35]

Answer:  

2 hours:  3968  <u>[I don't understand the $ sign in the answer box]</u>

At midnight:  12137

Step-by-step explanation:

The bacteria are increasing by 15% every hour.  So for every hour we will have what we started with, plus 15% more.  

The "15% more" can be represented mathematically with (1 + 0.15) or 1.15.  Let's call this the "growth factor" and assign it the variable b.  b is (1 +  percent increase).

Since this per hour, in 1 hour we'll have (3000)*(1.15) = 3450

At the end of the second hour we're increased by 15% again:

(3450)*(1.15) = 3968.

Each additional hour add another (1.15) factor,  If we assign a to be the starting population, this can be represented by:

P = a(1.15)^t for this sample that increase 15% per hour.  t is time, in hours.  

If a represents the growth factor, and P is the total population, the general expression is

P = ab^t

Using this for a = 3000 and b = 1.15, we can find the total population at midnight after starting at 2PM.  That is a 10 hour period, so t = 10

P = (3000)*(1.15)^10

P = 12137

8 0
2 years ago
The hypotenuse of a right triangle is 10 ft long. the shorter leg is 2ft shorter than the longer leg. find the side lengths of t
Gwar [14]
Since we have two possible pieces of information and 2 items to solve for, we know this is a system of equations.
Our first piece of information is that our shorter leg (s) is 2 feet shorter than our longer leg (l). This can be written as s=l-2.
Our second piece of information is that using the Pythagorean theorem that our shorter leg squared plus our longer leg squared is equal to our hypotenuse squared. This can be represented by s^2+l^2=10^2. Now we can solve.
We have already isolated for s in our first equation, so we can substitute l-2 in.
(l-2)^2+l^2=10^2
l-2+l=10
2l-2=10
2l=12
l=6
Now we can substitute in for s in our simpler equation
s=6-2
s=4
We now know that using our knowledge of systems of equations, the side lengths of this right angle triangle are 6 and 4.
5 0
3 years ago
how could i answer this question? "suppose 2 friends want to share 5 cookies evenly. Interpret the remainder in two different wa
laiz [17]
They both can have two cookies and then split the fith one in half
8 0
3 years ago
What is the least common dominator of 3/4 4/5 and 2/3
Damm [24]
3/4 = 45/60, 4/5 = 48/60, 2/3 = 40/ 60
6 0
2 years ago
Select the correct answer.
Gre4nikov [31]

Answer:

(D) These two matrices cannot be added.

Step-by-step explanation:

Matrices of different shapes can't be added, but they can be multiplied. : ) Have a good day.

4 0
3 years ago
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