Use Multiplication to solve problems 18-21 #20 (1 1/4 x $9.60) x 9
1 answer:
Answer: 108
Step-by-step explanation:
If you have a scientific calculator you can plug the entire equation in the calculator.
If you don't, work out the parentheses first.
1. Change the fraction to a decimal.
1 is equal to 1.25
2. Multiply 1.25 by 9.60
1.25 × 9.60 is 12
3. Re-write to (12) × 9
4. Mulitply 12 by 9
(12) × 9 is 108
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If a quadratic function has zero at x=-9, then point (-9,0) lies on the graph of quadratic function.
A line of symmetry has equation x=-3.5 that is x+3.5=0.
Use formula for the distance from point to the line AX+By+C=0:
Thus,
Answer: the distance is 5.5 units.
Answer:
≈ 47.2 m
Step-by-step explanation:
let the height from the sea to the base of lighthouse be h₁
let the height from the sea to the top of the lighthouse be h₂
using the tangent ratio in the right triangle
tan55.1° = =
( multiply both sides by 610 )
h₁ = 610 tan55.1°
tan56.5° = ( multiply both sides by 610 )
h₂ = 610 tan56.5°
then
height of lighthouse = h₂ - h₁
= 610 tan56.5° - 610 tan55.1°
= 610(tan56.5° - tan55.1° )
≈ 47.2 m ( to the nearest tenth )