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erica [24]
2 years ago
10

Can you give me an answer to this problem? 100m + 60m + ?m Pythagorean thereon

Mathematics
1 answer:
laila [671]2 years ago
5 0

Answer:

116.62m

Step-by-step explanation:

c= \sqrt{a^2+b^2} = \sqrt {100^2+60^2} approx. 116.61904

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Help! I'm a little stumped when it comes to variables in matrices. An explanation would be super rad!
iris [78.8K]

Answer:

30

Step-by-step explanation:

To find the determinant of a 3x3 matrix, you can use this method. (See picture.)

Start with the first number in the top row, and block off the row and column.  A 2x2 matrix will be left.  Find the determinant of this 2x2 matrix, and multiply it by the number in the top row.

Repeat for the other two numbers in the top row.  Add the first result, subtract the second, and add the third.

det A = -2 [(3)(-5) − (a)(0)] − 2 [(0)(-5) − (a)(0)] + b [(0)(0) − (3)(0)]

det A = -2 (3)(-5) − 0 + 0

det A = 30

8 0
2 years ago
the bike course is 80 miles long and I have ridden 44 miles of the course. what percentage have avridden?
andreev551 [17]
You have ridden 55% of the way.

You have to set up a proportion 44 over 80 is equal to x over 100 (x is what we are trying to find - the percentage you have ridden). Then use cross products and multiply the 44 by 100 to get 4400 and divide that by 80 to get 55. So the answer is 55 so 55%.

55%.

Hope this helps!
Can u plz mark me as brainliest? I really need it!
8 0
3 years ago
Which is equal to 2√2 ? Select all that apply.
mars1129 [50]

Answer:

B and C

Step-by-step explanation:

Sin 45 or Cosine 45.

7 0
2 years ago
Given f(x) = the quantity of 2x minus 2 divided by 4, solve for f−1(3).
spin [16.1K]
Given: f(x)=(2x-2)/4
find f^-1(3)?
we need to find the inverse of f(x), so
x=(2y-2)/4
2y-2=4x
y-1=2x
y=2x+1
so, then f^-1(x)=2x+1
f^-1(3)=2(3)+1
=6+1
=7
so, the answer is 7

6 0
2 years ago
A store is having a sale on DVDs and CDs. DVDs cost $4 and CDs cost $7. On one day, the store made $204 from DVD and CD sales, a
Gre4nikov [31]
We are given here the individual costs of DVD and CD as well as the total sales and the number of items sold on one day. To solve the number of DVDs and CDs sold each, we devise two independent linear equations:

(1) x + y = 39
(2) 4x + 7y = 204

x- number of DVDs; y - number of CDs

solving, x= 23 DVDs
y = 16 CDs

4 0
3 years ago
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