Answer:
Variant c
Step-by-step explanation:
c²=4*9
c=6
You can apply phyphagor
b²=6²+9²=36+81=117
Find the value of this expression if x = -9. x2 + 1 x+7
1 answer:
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Answer:
Step-by-step explanation:
So we have:
Remove all the fractions to make things simpler. To do so, we can multiply by the LCM of the denominators.
The denominators are 3 and 7.
The LCM of 3 and 7 is 21. Thus, multiply everything by 21:
Distribute:
Simplify the fractions:
Add 12x to both sides:
Subtract 9 from both sides:
Divide both sides by 26:
Reduce:
And that's our answer :)
Answer:
Step-by-step explanation:
Convert it to an expression:
Answer:
Jason started scuba diving 5 meters below sea level and is descending at a rate of 2.5 meters per second.
Step-by-step explanation:
Jason is scuba diving at a constant rate toward the ocean floor.
Equation:
x = The number of seconds Jason has been swimming.
y=The depth of Jason in meters below sea level
General equation : y=mx+c
m = Slope = rate of change per unit
On comparing m = -2.5
Negative signs represents the descending .
So, rate of descending per second = 2.5 m/sec
-5 denotes the initial position below sea level
So, Option D is true
So, Jason started scuba diving 5 meters below sea level and is descending at a rate of 2.5 meters per second.