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alexgriva [62]
3 years ago
14

The length of a rectangle is 10cm longer than its breadth the perimeter is 48cm determine the area of the rectangle​

Mathematics
2 answers:
vodka [1.7K]3 years ago
8 0

Answer:

119 cm^2.

Step-by-step explanation:

Perimeter = 2(L + W)       where L = length and W = the width.

L = W+10 (given).

So substituting the given values:

48 = 2(L + W)

48 = 2(W+10 + W)

2(2W + 10) = 48

2W + 10 = 48/2 = 24

2W = 24 - 10 = 14

W = 7 cm.

So L = 17 cm.

Area = 7 * 17

= 119 cm^2.

damaskus [11]3 years ago
5 0

Answer:

djdjkffk Friesland whether

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Answer:

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Step-by-step explanation:

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We can solve for x by expanding the parentheses and isolating x.

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Answer:

Step-by-step explanation:

2.66a-6b

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3 years ago
Suppose you do an analysis of the starting salaries of 100 recent Lehman graduates. You find that the average starting salary is
madreJ [45]

Answer:

a) (59180,60820)

b) (59020,60980)        

Step-by-step explanation:

We are given the following information in the question:

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Standard Deviation, σ = $5,000

Sample size, n = 100

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Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.10} = 1.64

60000 \pm 1.64(\frac{5000}{\sqrt{100}} ) = 60000 \pm 820 = (59180,60820)

b) 95% critical values

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

60000 \pm 1.96(\frac{5000}{\sqrt{100}} ) = 60000 \pm 980= (59020,60980)

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