Answer:
Number sentences can be true or they may not be true. For example: 10 + 5 = 15. ... So, a number sentence contains numbers, mathematical operations, equal to or inequality sign and a number after the equality or inequality sign.
Step-by-step explanation:
Answer:
For this case we have the following quadratic equation:
Where,
t: time
s: height of the ball
By the time the height is 20 feet we have:
Rewriting the polynomial we have:
Using the quadratic formula we have:
Substituting values we have:
Doing the calculations we have the roots are:
Answer:
the time when the football will be 20ft above the ground is:
B) 0.73 seconds or 1.46 seconds
Step-by-step explanation:
Answer:
To solve for x, I would use Cosine.
This is because cosine holds the ratio of adjacent/hypotenuse. Based on the diagram, we can see that HYPOTENUSE = x, so we are solving for x. We know the angle, is 17 degrees. Lastly, we know the triangle leg ADJACENT to the angle is 10 units long. So we would use cosine, implementing the ratio adjacent/hypotenuse. Solving this, we would use cos(17)=10/x. Then our goal is to isolate x, so cos(17)=10/x becomes cos(17)*x=10, we are still trying to isolate x, so, x=10/cos(17). Therefore, our answer x = 10.457 units. cosine would be the best way to go.
Step-by-step explanation:
Answer:
3x^2 + 10x
Step-by-step explanation:
If u wrote it correctly it would be ((x+4+2)+4)(x)
Answer:
equation A
Step-by-step explanation: