1. A rectangle has a length of 5cm and a height of 4cm.
2 answers:
Answer:
a
20cm squared
b
18cm
c
5cm
d
80cm
Step-by-step explanation:
a
Area is height multiplied by length in a regular quadrilateral
b
Perimeter is calculated by adding all the sides together
c
0.5 is effectively halving, so instead of 4 multiplied by 5 it is 2 multiplied by 2.5
d
2 is effectively doubling, so instead of 4 multiplied by 5 it is 8 multiplied by 10
Answer:
<u>20 cm² </u> <u>18 cm </u> <u>5 cm² </u> <u>80 cm² </u> Step-by-step explanation:
<u>Q1(a)</u>
Area = length x height Area = 5 x 4 Area = <u>20 cm² </u>
<u>Q1(b)</u>
Perimeter = 2(length + height) Perimeter = 2(5 + 4) = 2(9) Perimeter = <u>18 cm </u>
<u>Q1(c)</u>
New dimensions are : 5/2 = <u>2.5</u> and 4/2 = <u>2</u> New Area = 2.5 x 2 New Area = <u>5 cm² </u>
<u>Q1(d)</u>
New dimensions are : 2 x 5 = <u>10</u> and 2 x 4 = <u>8</u> New Area = 10 x 8 New Area = <u>80 cm² </u>
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Answer:
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Step-by-step explanation:
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Step-by-step explanation:
f(x) = x² + 1, where x >= 0.
Let y be f(x).
=> y = x² + 1
=> x² = y - 1
=> x = √(y - 1) because x is non-negative.
Hence f^-1(x) = √(x - 1), where x >= 1.
If the input value is negative, the output value is always positive. We know this because the negative sign before the 4z will always reverse the negativity of the number that is plugged in.
-x-29=13+2x
