You can do this 2 ways, one is knowing the special right triangles called triplets. An example of a triplet would be 3-4-5 where the largest value is the hypotenuse. In this example, the other 2 sides are 3 and 4 and the missing side is the hypotenuse, so using the knowledge of triplets, we can find that the hypotenuse is 5.
algebraically, we can use the Pythagorean theorem; a^2+b^2=c^2 where a and b are the opposite and adjacent and where c is the hypotenuse. We can then substitute in the values to get : 3^2 + 4^2 = c^2. When simplified, we get 9+16=c^2. Simplify further, and get 25=c^2. Now we Square root both sides to solve for C. Finally, we get C=5. Your missing side is 5.
Answer:
8 units squared.
Step-by-step explanation:
Assuming the numbers are the length and width, we can use the formula for finding the area of the rectangle.
The area should be eight units squared.
Answer:
b, d and e
Step-by-step explanation:
Only even numbers are divisible by 2
The only even numbers in the list are
b 70
d 2380
e 6678
Answer:
y = 6
Step-by-step explanation:
2(2y -12) = 0
a. Distribute the problem out
4y - 24 = 0
b. Add 24 to both sides to seperate the constants and the terms.
4y - 24 = 0
+24 +24
4y = 24
c. Divide 4 out of both sides to isolate y
y = 6
d. Plug the 6 back into the equation to see if the answer is correct.
2(2(6) -12) = 0
2(12-12) = 0
2(0) = 0
Hope this helps!
Answer:
k = 13
Step-by-step explanation:
The sum of the angles is 180 since they form a straight line
4k-7 + 90 + 3k+6 = 180
Combine like terms
7k+89=180
Subtract 89 from each side
7k+89-89 = 180-89
7k =91
Divide each side by 7
7k/7 = 91/7
k = 13
