Answer:
x = ±4
Step-by-step explanation:
3x^2 =48
Divide by 3
3x^2/3 = 48/3
x^2 = 16
Take the square root of each side
sqrt(x^2) = ±sqrt(16)
x = ±4
4b=a then plus 10 to see if the age holds true to 3b=a in ten years. Then since the question is how old is she today? You must either add 6 to young age (of20) or minus 4 from the older (of 30).
So Betty would be 26 today.
Answer:
15,17,19
Step-by-step explanation:
<em>Here's</em><em> your</em><em> solution</em>
<em> </em><em> </em>=> let the first number be x
=> then second and third number will be
(x + 2) and (x + 4)
=> now it's given that sum is 51
=> so, x + (x + 2) + (x + 4) = 51
=> 3x + 6 = 51
=> 3x = 51 - 6
=> 3x = 45
=> x = 45/3
=> x = 15
hence ,the following number are , 15,17,19
hope it helps
Answer:
60
Step-by-step explanation:
A percentage is divided by 100 to get it's decimal form. So 400/100 = 4.0
Now you take the value given and multiply it by the percentage in decimal form.
So in this case.
15*4 = 60
Its the first one because if the circle is filled in than it is 2and more or the thing
