The negative root of x^2+x-9=0 is -1/2 - (√37) / 2 ≈ -3.541, so the answer is:
between <span>(–4, 0) and (–3, 0).
If you don't want to calculate the roots, you can verify that the x-axis is crossed between x=-4 and x=-3 by observing the sign of f change.
f(-4) = 16-4-9 = 3
f(-3) = 9-3-9 = -3
The sign changed (f went from 3 to -3) so it must have crossed the x-axis.</span>
Answer:
See Below
Step-by-step explanation
1) subtract 4 from both sides
You have the answer
Answer:
use the pythagorean theorem (a squared + b squared = c squared) to solve. the 42 will be the B squared value, and the 94 will be the c squared value. you have to solve for a squared.
Step-by-step explanation:
a²+42² = 94²
solve from there on
Answer:
1/2 feet
Step-by-step explanation:
1/4 of 2 feet is 1/2
It is more effective if I explain using examples. So, for multiplication, you just have to multiply the magnitude, then add the exponents of the base 10. For example, when you multiply 5.2×10³ and 1.6×10², the solution would be:
(5.2)(1.6)(10³⁺²) = 8.32×10⁵
Now, for division, you will have to divide the magnitudes, and subtract the exponents by numerator minus denominator. The solution is as follows:
(5.2/1.6)(10³⁻²) = 3.25×10¹