Answer:
Step-by-step explanation:
By the Pythagorean Theorem we know that the hypotenuse squared is equal to the sum of its squared sides.
h^2=x^2+y^2
Here y=25 and x=8 so
h^2=25^2+8^2
h^2=625+64
h^2=689
h=26.25 ft
They obviously rounded to nearest whole foot.
So Carrie is correct in saying the ladder should be 26 feet.
Answer:
True, False
Step-by-step explanation:
I am unsure as to why this is considered High School Math but here’s the reasoning.
For question 1, adding two opposite numbers will result in a cancellation to 0 because the numbers will simply be adding or subtracting themselves. 4+ (-4) = 0. Same with 10 + (-10).
For question 2, the opposite of multiplying by a number is to divide by the number, not subtracting. If you divide a number by the same number you multiplied with intially, you will always receive the same initial number. With subtraction, there is the possibility that this will not work. For example, 3 x 8 = 24, but 24 - 8 ≠ 3.
Yes this is because you are adding all the numbers
Answer:
(3,2)
Step-by-step explanation:
5x+2y= 19
4x - 3y = 6
I will use elimination
Multiply the first equation by 4
20x +8y = 76
Multiply the second equation by -5
-20x +15y = -30
Add them together to eliminate x
20x +8y = 76
-20x +15y = -30
---------------------------
23y = 46
Divide by 23
23y/23 = 46/23
y =2
Now find x
5x+2y =19
Substitute y=2
5x+2(2) =19
5x+4 = 19
Subtract 4 from each side
5x +4-4 =19-4
5x= 15
Divide by 5
5x/5 = 15/5
x=3
The solution is
(3,2)