Answer:
x = 4
Step-by-step explanation:
1) Substitute the given x values, by substitution you replace x with the numbers provided. We do this because since the numbers are already given you are to find the correct value of y.
2) Plug in the numbers provided.
Start with x = 3
2(3) + 3 = 11
2 * 3 = 6
6 + 3 = 9
x = 3 is not a correct choice
2) Use the second option and determine if the second option is correct.
x = 4
2(4) + 3 = 11
4 * 2 = 8 + 3 = 11
This option is correct because the value of x makes the equation true.
Rewrite the fraction as a decimal
-19/50 = -0.38
The length of the shorter rope is 20 cm.
<h3>How to find the original length of the rope using ratio?</h3>
He cut a rope into two pieces with lengths having a ratio of 5 to 2.
The shorter piece is 70 cm long.
The length of the original rope can be calculated as follows:
The ratio of the length of the rope is as follows;
5 : 2
let
x = length of the original rope
Therefore,
length of shorter piece = 2 / 7 × 70
length of shorter piece = 2 / 7 × 70
length of shorter piece = 140 / 7
length of shorter piece = 20 cm
Therefore, the length of the shorter rope is 20 cm.
learn more on ratio here: brainly.com/question/15418103
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