Answer:
Length = 12cm
Step-by-step explanation:
The dimensions of the recatngle is:
- width → x
and
- length → x+7
The area of a rectangle follows the formula: length*width
Meaning: x * (x + 7) = 60
Expand that: x^2 + 7x = 60
Rearragne the equation and factorise it
(x-5)(x+12) = 0
The width cannot be a negative value, so the answer must be 5.
Remember that x was the width and the length is the width add the 7.
So the length is 12 cm.
Well, the average of a sum of number is found by adding each given number and dividing that number by the amount of given numbers.
Example: 5+4+3+8=20
and 20/4 = 5, the average of the numbers
Multiply 1.8 by 8.0 using this format:
1.8
x8.0
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Hope this helped
Answer:
Step-by-step explanation: use the form y=mx+b
Answer:
½
Step-by-step explanation:
12 girls
So, 20-12 = 8 boys
6 didn't bring lunch box
So, 8-6 = 2 brought lunch box
2 boys and 8 girls brought lunch box.
10/20 brought lunch box
Probability = 10/20 = ½
