Answer:
Your answer is 15.2
Step-by-step explanation:
use the formula a² + b² = c²
In this case, you know what a and c are.
a = 13
c = 20
Put those two into the formula.
13² + b² = 20²
13² = 169
20² = 400
169 + b² = 400
Bring 169 over to the other side to get b² by itself. do this by subtracting it from 400.
400 - 169 = 231
b² = 231
Now we need to get rid of the exponent. To do this, get the square root of both sides.
√b² = √231
b = 15.1986841536...
Finally, round your answer to the nearest tenth like the question tells you to.
15.2
Therefore:
b = 15.2
Answer:
x = ± 2
Step-by-step explanation:
Given
2x² + 11 = 131 ( subtract 11 from both sides )
2x² = 120 ( divide both sides by 2 )
x² = 60 ( take the square root of both sides )
x = ± 
= ± 
= ± 2
Answer:
Step-by-step explanation:
(qor)(x)=q(r(x))=q(5x+2)=(5x+2)²-3(5x+2)-4
first find (qor)(x) as explained above
then put x=0 to get (qor)(0)
1. 2^6.
2. 2^3.
3. 3^7
4. 6x^4
5. 4x^2
6. 12n^5
7. 9x^2
To find the answer of these questions, add the exponents. If there is whole numbers in the problem, you have to multiply the numbers. For number 7, do 3^2 and x^2. Hope this helps!
