2x+3=13
2x+1=x+4
x-5=x.0.5
3x+4=4x-3
Answer:
84 years
Step-by-step explanation:
Given :
At present :
Let :
daughter's age = x
Woman's age = 2x
21 years ago :
Woman's age = 3 times daughter's age
2x - 21 = 3(x - 21)
2x - 21 = 3x - 63
-21 + 63 = 3x - 2x
42 = x
Daughter's age = 42
Woman's age = 2x = 84
Hence, woman's present age is 42 years
Next time you post a question, break it up into a couple of questions. If you don't want to do that use paragraphs and finally, if that doesn't suit you add more points -- Please. No offense intended. the please is genuine.
1. A triangle = 180o. If one is 90, the other 2 will be a total of 90o
Answer C: <<<====
2. A looks like the correct answer. 30 + 100 = 130 ; 180 - 130 = 50
3. You need a diagram to get the third one.
Answer:
Step-by-step explanation:
Slope-intercept form: y = mx + b
Isolate the y. Note the equal sign, what you do to one side, you do to the other.
First, subtract 4x from both sides:
4x (-4x) - 5y = 2 (-4x)
-5y = -4x + 2
Next, divide -5 from both sides:
(-5y)/-5 = (-4x + 2)/-5
y = (4/5)x - (2/5)
is your answer.
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Answer:
0.64 is a decimal and 64/100 or 64% is the percentage for 64/100.
Step-by-step explanation: