Finding the value of x and y.
x:
sin 30 = 1/x
x = 1/sin 30
x = 2
y:
cos 30 = y/2
2(cos 30) = y
1.73 = y
Now the table:
sin 30 = 1/2
cos 30 = 1.73/2
tan 30 = 1/1.73
sin 60 = 1.73/2
cos 60 = 1/2
tan 60 = 1.73/1
Hope this helps :)
Subsitution
4x+y=210
minus 4x both sides
y=210-4x
sub 210-4x for y in other equation
3x+2(210-4x)=195
3x+420-8x=195
-5x+420=195
minus 420 both sides
-5x=-225
divide both sides by -5
x=45
sub back
y=210-4x
y=210-4(45)
y=210-180
y=30
x=45
y=30
(x,y)
(45,30)
Answer:
I belive the equation would be...
Step-by-step explanation:
8x+$35=$167.00
Hope it helps??
The package weighs 30 ounces.
Step-by-step explanation:
Mailbox Plus charges;
Charges per ounce = $0.25
Let,
x be the number of ounces.
M(x)=5+0.25x
United packges charges;
Charges per ounce = $0.35
U(x) = 2+0.35x
Cost will be same when the functions are equal;
M(x) = U(x)
Dividing both sides by 0.10
The package weighs 30 ounces.
Keywords: functions, division
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#LearnwithBrainly
i am only here for points but this is very easy
