Answer
The answer and procedures of the exercise are attached in the following archives.
Step-by-step explanation:
You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.
Answer:
13. 20 + (-15) = 5 -- in total he kept 5 pounds
14. -28 + 38 = 10 -- the temperature changed by 10º over 12 hours
15. 100 + (-72) + 48 = 76
Step-by-step explanation:
13. since he gained 20lbs, then lost 15, add -15 to 20 to get 5, the amount of pounds he kept on him
14. the temperature starts at -28º then goes up 38º, so add 38 to -28.
15. the ramp goes up 100, (+100) then down 72, (-72) and then up another 48 (+48) as equation this would be 100 + (-72) + 48
A + (-5) = -12
First isolate your variable so move the -5 over (by adding 5 to both sides)
Then you will have a = -12+5
Simplify and you get A= -7
answer:
x = 4
or 5.6568
step-by-step explanation:
- know the formula and plug in
formula: a^2 + b^2 = c^2
- now plug in what we have
- whatever the RIGHT ANGLE points to is the HYPOTENUSE or c
- the other two sides are the "legs" or a and b
a^2 + b^2 = c^2
7^2 + b^2 = 9^2
49 + b^2 = 81
b^2 = 32
b = 4
- in this case, b would be used as x
x = 4 or 5.6568 (exact value)
