a+b+c=68
b-3=a
c-5=b
now just solve the system of equations, substitue so that there are only b's in the equation:
a+b+c=68
(b-3) + b + (b+5) = 68
3b=66
b=22
Therefore Barbara is 22
Answer:
1/2
Step-by-step explanation:
slope = 
(0-(-4))/(0-(-8)) = 1/2
Answer:
2.22
Step-by-step explanation:
To get 2 2/9 in decimal form, we basically convert the mixed number to a fraction and then we divide the numerator of the fraction by the denominator of the fraction. Here are the detailed math steps we use to convert 2 2/9 mixed number to decimal form:
Step 1: Multiply the whole number by the denominator:
2 × 9 = 18
Step 2: Add the product you got in Step 1 to the numerator:
18 + 2 = 20
Step 3: Divide the sum from Step 2 by the denominator:
20 ÷ 9 = 2.222222
That's it! The answer to 2 2/9 in decimal form is displayed below:
2 2/9 ≈ 2.22
Answer:
15 mintues/ 3 hours
Step-by-step explanation:
Answer:
17.7
Step-by-step explanation:
This figure is a pentagon - a shape with 5 sides. In a pentagon, the figure's angles add to 540.
100 + 7x-4 + 3x + 23 + 9x - 6 + 90 = 540
190 +19x + 13 = 540
203 + 19x = 540
19x = 337
x = 17.7
