Answer:
7.99
Step-by-step explanation:
using the formula
Answer:
The answer is option B
Step-by-step explanation:
To find cos 45° we must first find the adjacent and the hypotenuse
Let the adjacent be x
Let the hypotenuse be h
To find the adjacent we use tan
tan ∅ = opposite / adjacent
From the question
the opposite is 9
So we have
tan 45 = 9 / x
x tan 45 = 9
but tan 45 = 1
x = 9
Since we have the adjacent we use Pythagoras theorem to find the hypotenuse
That's
h² = 9² + 9²
h² = 81 + 81
h² = 162
h = √162
h = 9√2
Now use the formula for cosine
cos∅ = adjacent / hypotenuse
The adjacent is 9
The hypotenuse is 9√2
So we have
cos 45 = 9/9√2
We have the final answer as
<h3 /><h3>cos 45 = 1 / √2</h3>
Hope this helps you
Answer:
0.098
Step-by-step explanation:
1.5-0.52 =0.98
(3+2)*2=10
0.98/10=0.098
Answer:
f^-1 (x) = 1+ln( (x-3)/2)
Step-by-step explanation:
hello :
let f(x) = y so : y = 2e^(x-1) +3
calculate x : e^(x-1) = (y-3)/2
for : y-3 > 0 : x-1 = ln( (y-3)/2) so : x= 1+ln( (y-3)/2)
If(x)= 2e^(x-1) +3 , what is f^-1 (x) = 1+ln( (x-3)/2)
<span>Work:
</span>
1 gallon of water requires 3/4 teaspoon of plant food, so multiply 3/4 by 5
3/4 × 5
Make 5 into a fraction
3/4 × 5/1
Multiply the denominator by the denominator and the numerator by the numerator
3 × 5 15
---- ---- = ------
4 × 1<span> 4
15/4 is an improper fraction, so make it a mixed fraction
15/4 = 3 and 3/4
Answer:
Pedro should mix 15/4 teaspoons or 3 and 3/4 teaspoons of plant food into 5 gallons of water.</span>