Answer:
17
Step-by-step explanation:
both m's substitute for 4
4+4+9
8+9
17
Subtract 20 from the total weight and divide by 4:
200 - 20 = 180
180/4 = 45
Each other crate weighs 45 pounds each.
Answer:
Step-by-step explanation:
circumference=πd=π×18=18π in
distance covered in 1 sec=18π×10=180π in.
distance covered in 1 min=180π×60=10800π in
distance covered in 60 min=10800π×60=648000π in=648000π÷12=54000π ft
=54000π÷3=18000π yards=18000π÷1760≈32.13 miles per hour.
Answer:
so for the first one the equation is y=5x+30 but then u gotta plug 3 in for x becuase x is the supposed number of hours thhat e is working and so for your tabule jst put 1,2,3,4,5 for the x spot and tghe write the euation in hte blank row and then put the answer for pulging it in with the differnt numbers for y
Step-by-step explanation:
Answer:
y = 21
x = 74
Step-by-step explanation:
-x + 4y = 10
x - 3y = 11
Let the first eqn be eqn 1 and the second be eqn 2
ie
- x + 4y = 10 --------eqn 1
x - 3y = 11 ----------eqn 2
From eqn 1, make x the subject of the formula
Carrying x over the equal to in order to change the sign from - to +
4y - 10 = x
Substitute the value of x in eqn 2
4y - 10 - 3y = 11
Collecting like terms
4y - 3y = 11 + 10
y = 21
The value of y is 21
Then, substitute the value of y into eqn 1
-x + 4y = 10
-x + 4(21) = 10
-x + 84 = 10
84 -10 = x
In order to get rid of the - sign
x = 74
Therefore,
x = 74
y = 21
