Answer:
2.2 times 10 exponent 4
Step-by-step explanation:
Answer:
The equation is 2x + 5.1 = 11.5
Step-by-step explanation:
Given that:
Fiona thinks of a number.
Let,
x be that number.
She doubles the number, therefore
2x
Then she adds 5.1 in the number, thus
2x + 5.1
She gets the answer 11.5, so the equation becomes
2x + 5.1 = 11.5
Hence,
The equation is 2x + 5.1 = 11.5
Answer:
3 years
Step-by-step explanation:
let the number of years required be x
hence
42+x+44+x = 4(7+x+5+x+2+x)
86+2x = 4(14+3x)
86+2x = 56+12x
2x-12x = 56-86
-10x = -30
x = 3
You didn't list the options
btw
the next step should be
(add 4 to both sides)
2y = 16
or
2y - 4 + 4 = 12 + 4
Answer:
x = -2
Step-by-step explanation:
Divide both sides by 3
3 (2x + 5)/3 = 3/3
Simplify
2x + 5 = 1
Subtract 5 from both sides
2x + 5 - 5 = 1 - 5
Simplify
2x = -4
Divide both sides by 2
2x/2 = -4/2
Simplify: 2x/2
Divide the numbers: 2/2 = 1
= x
Simplify: -4/2
Apply the fraction rule: -1/b = -a/b
= - 4/2
Divide the numbers: 4/2 = 2
= -2
x = -2
