Answer:
x=27
Step-by-step explanation:
3x+9 is a right angle because 3x+9 + a right angle make a straight line
3x+9 +90 = 180
Subtract 90 from each side
3x+9 = 90
We now can solve for x
3x+9-9 = 90-9
3x = 81
Divide each side by 3
3x/3 = 81/3
x=27
Answer:
65
Step-by-step explanation:
in 36 secs 39 words
in 1 sec 39/36 words
in 60 secs (39x60)/36 = 65 words
The answer is B because the line is not dotted.
Answer:
-54
Step-by-step explanation:
27−34
=27−81
=−54
Answer: 48
Step-by-step explanation:
The share of sand in the mixture is 3/7
To make 112 kgs. of concrete, he will need
3/7 x 112 = 48 units of sand