Answer:
The square root of 49 is 7.
Step-by-step explanation:
To find the square root of 49, you would need to look at the possible multiplication equations. For example:
1 x 49 = 49
7 x 7 = 49
49 x 1 = 49
As you can see, 7 x 7 would have the square root of 49, which is 7.
7^2=49
.
In conclusion, the square root of 49 is 7
Answer: Suppose you're given the two points (–2, 1) and (1, 5), and they want you to find out how far apart they are. You can draw in the lines that form a right-angled triangle, using these points as two of the corners. It's easy to find the lengths of the horizontal and vertical sides of the right triangle: just subtract the x-values and the y-values.
Step-by-step explanation: Then use the Pythagorean Theorem to find the length of the third side (which is the hypotenuse of the right triangle):
c2 = a2 + b2
...so:
c
2
=(5−1)
2
+(1−(−2))
2
c = \sqrt{(5 - 1)^2 + (1 - (-2))^2}c=
(5−1)
2
+(1−(−2))
2
c = \sqrt{(4)^2 + (3)^2}c=
(4)
2
+(3)
2
c = \sqrt{16 + 9} = \sqrt{25} = 5c=
16+9
=
25
=5
Answer:
it would be 10/5 or 2
Step-by-step explanation:
y2-y1/x2-x1
17-7/9-4
10/5 simplify
2
Answer:
4 mph
Step-by-step explanation:
Givens
Current = c = 2 mph
Alberta = r = ?
d = 2 mph upstream
d1 = 6 mph downstream
Formula
d = r * t
The time is the same so the formula becomes d/r = t
2/(r - 2) = 6/(r + 2)
Solution
Cross Multiply
2*(r + 2) = 6*(r - 2)
2r + 4 = 6r - 12 Subtract 2r from both sides
4 = 6r - 2r - 12 Combine the right.
4 = 4r - 12 Add 12 to both sides.
4 + 12 = 4r
16 = 4r Divide by 4
16/4 = 4r/4
r = 4
Alberta's rate of travel is 4 mph
Yuki T,
Non-linear means not straight lines, right? The real-life situations I think of are exponential equations (such at y = x^2). Jimmy wants to hand out fliers. He hands out fliers to two of his friends. He asks his friends to pass out fliers to two of their friends, who in turn will pass them along to two of their friends.
Jimmy - 1
Jimmy's 2 friends - 2
Jimmy's 2 friends 2 friends - 4
16...64...
It grows exponentially. Think pyramid schemes.
Of course, there are other non-linear equations. For example, some people pay rent based on their income. Someone who earns $10,000 might pay 8% while someone who earns $56,000 might pay 14%.
The difference between linear and non-linear is simple- straight lines with no breaks vs. lines that aren't straight or lines that have breaks.
Hope this helps!