Step-by-step explanation:
$20/hr carpenter pay
$25/hr blacksmith pay
Let c = hours working carpentry
Let b = hours working as blacksmith
c + b = 30 {equation 1}
20c + 25b = 690 {equation 2}
In equation 1 solve for one variable in terms of the other.
c = 30-b
Substitute that into equation 2:
20(30-b) + 25b = 690
600 - 20b + 25b = 690
5b = 90
b = 90/5
b = 18 hours working as a blacksmith
c = 30-b = 30-18 = 12 hours as a carpenter
Answer:0,4/0,92/0,7.
Espero que ajude...
Step-by-step explanation:
A fraction is written in the form of a numerator and a denominator where the denominator is greater than the numerator.
3² = 3 X 3 = 9
4³ = 4 x 4 x 4 = 64
= 2 x 2 x 2 x 2 x 2 x 2 = 64
The exact value in fractions are:
a) 1/9
b) 1/64
c) 1/64
<h3>What is a fraction?</h3>
A fraction is written in the form of a numerator and a denominator where the denominator is greater than the numerator.
Example: 1/2, 1/3 is a fraction.
We have,

= 1/3²
3² = 3 X 3 = 9
= 1/9

= 1/4³
4³ = 4 x 4 x 4 = 64
= 1/64

= 1/
= 2 x 2 x 2 x 2 x 2 x 2 = 64
= 1/64
Thus.,
The exact value in fractions are:
a) 1/9
b) 1/64
c) 1/64
Learn more about fractions here:
brainly.com/question/24370499
#SPJ1
Answer:
b
Step-by-step explanation:
With the info provided most likely this amount.
Answer:
cosine
Step-by-step explanation:
cosine is adj over hyp
this can be remembered by the acronym:
SOH CAH TOA
s meaning sine
c meaning cosine
t meaning tangent