Answer:
60 degrees
Step-by-step explanation:
1:2:3=180
1x+2x+3x=180
6x=180
x=30
1=30
2=60
3=90
middle=2=60
60 degrees
g = girls in class
b= boys in class
g = 2b-1
girls + boys =26
g+b=26
substitute g = 2b-1
2b-1 +b =26
combine like terms
3b-1 =26
add 1 to each side
3b -1+1 = 26+1
3b = 27
divide each side by 3
3b/3 = 27/3
b = 9
There are 9 boys
B.y=-3x-1
C.y=3x+1
D.y=-3x+1
A.1.4 × 105
B.0.32 × 103
C.5.62 × 210
D.11.2 × 101
A. 1.4 × is written correctly in scientific notation
0.32 × needs to be 3.2 ×
5.62 × is just wrong its always × 10
11.2 × needs to be 1.12 ×
There is always 1 number before the decimal and that number is always greater than 0 and the number after × is always 10
Answer:
A 1.4 × 105
Step-by-step explanation: