I got B as my answer for this
Answer: 90
Step-by-step explanation: Multiply each side by 18.
Answer:
83.6 mL
Step-by-step explanation:
Given 440 mL of 19% acid solution. This means the whole volume of this acid solution is 100%. Let x mL be the volume of pure acid in this solution.
Then
Write a proportion:
Cross multiply:
Answer:
y = 22°
Step-by-step explanation:
the sum of the interior angles of a triangle is 180 degrees
40 + 2x = 180
2x = 140
x = 70
'x' and '5y' form a linear pair, meaning they add up to 180 degrees
x + 5y = 180
substitute 70 for 'x'
70 + 5y = 180
5y = 110
y = 22
In 5-4.7-2x+5/8 there is only one term containing a variable: -2x. The coefficient is the (negative) numeral -2.
