Step-by-step explanation:
2×2 + 8x + 26 =0
4 + 8x + 26 =0
4 + 26 = 0-8x
30 = 8x
divide both sides by th coefficient of x
30
=<em>3.75</em>
In a simple regression, the correlation coefficient r is the square root of r2.
1 answer:
You might be interested in
Answer:
(5 t ) cubed = 5 cubed . t cubed = 125 t cubed applies the power of a product rule to simplify (5 t) cubed ⇒ 3rd answer
Step-by-step explanation:
Let us revise some rules of exponents
×
=
×÷
=
=
=
.
To simplify
∵ 5t means 5 × t
∵ Both of them are cubed
- Use the 4th rule above
∴ =
∵ (5)³ = 5 × 5 × 5 = 125
∴ =
= 125 t³
(5 t ) cubed = 5 cubed . t cubed = 125 t cubed applies the power of a product rule to simplify (5 t) cubed
Answer:
Step-by-step explanation:
1 hour = 60 minutes
1 kilometers = 1000m
9 kilometers = 9*1000 = 9000 m
Distance traveled in 60 minutes = 9000 m
Distance traveled in 1 minute = 9000/60
Distance traveled in 30 minutes
= 4500m = 4.5 km