Answer:
a = 9
Step-by-step explanation:
a+11=20
Subtract 11 from each side
a+11-11 = 20-11
a = 9
29 and 31
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Answer:
53, 55, 57, and 59
Step-by-step explanation:
Let the numbers be
x, x +2, x +4, and x+6. Then
x + x+2 + x +4 + x + 6 = 224 Combine like terms
4x + 12 = 224 Subtract 12 from each side
4x = 212 Divide each side by 4
x = 53
The four consecutive integers are 53, 55, 57, and 59.
<em>Check:
</em>
53 + 55 + 57 + 59 =224
Answer:
565
Step-by-step explanation:
5x5=25
540+25=565
The length of the copy is 16.8 cm ,The length of the original is 25 cm.
<h3>
What is Percentage ?</h3>
Percentage is a number or ratio that represents a fraction of 100
It is given that
A photocopier makes copies that are 40% larger than the original.
An original is 12cm long. Find the length of the copy.
The copy will be
140 % of 12 cm
140 * 12/100
16.8 cm
Therefore , the length of the copy is 16.8 cm.
A copy is 35cm long. Find the length of the original.
The original will be x
140 * x / 100 = 35
x = 35 * 100 / 140 = 25cm
The length of the original is 25 cm.
To know more about Percentage
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