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rusak2 [61]
3 years ago
11

john is thinking of a number in the hundred thousands.The first digit is equal to the number of digits in the number.The number

has twenty tens and twice as many thousands.The number of ones is an odd number that os less than 5 and greater than the digit in the hundreds place. What is Johns number ?
Mathematics
1 answer:
scoundrel [369]3 years ago
5 0
36.3 Johns number sub or add or divid or multication
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An airplane flies due north from ikeja airport for 500km.It then flies on a bearing of 060 from a further distance of 300km befo
Nata [24]

Answer:

482 km

63.94 degrees

Step-by-step explanation:

to solve this question we will use the cosine rule. For starters, draw your diagram. From point A, up north is 500km and 060 from there, another 300. If you join the point from the road junction back to the starting point, yoou have a triangle.

Cosine rule states that

C = \sqrt{A^{2} + B^{2} -2AB   cos(c)  }

where both A and B are the given distances, 500 and 300 respectively, C is the 3rd distance we're looking for and c is the given angle, 060

solving now, we have

C = \sqrt{500^{2} + 300^{2} -2 * 500 * 300 cos(60)  }

C = \sqrt{250000 + 90000 - [215000   cos(60)  }]

C = \sqrt{340000 - [215000 * 0.5  }]

C = \sqrt{340000 - [107500  }]

C =\sqrt{232500}

C = 482 km

The bearing can be gotten by using the Sine Rule.

\frac{sina}{A} = \frac{sinc}{C}

sina/500 = sin60/482

482 sina = 500 sin60

sina = \frac{500 sin60}{482}

sina = 0.8983

a = sin^-1(0.8983)

a = 63.94 degrees

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David invested $1000.00. What would that money grow to in 18 months at a 5.5% interest rate?
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Find the slope of the line containing the points (3,-2) and (-1,6)​
dezoksy [38]

Answer: the answer is -2

Step-by-step explanation: use slope formula

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Answer:

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Step-by-step explanation:

When distributing, you multiply the term outside the brackets to all the terms in brackets.

If the term outside the bracket is negative, then when distributing/opening the brackets, the signs of the terms changes.

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-x*5x+-x*2

∴-5x^2-2x

4 0
3 years ago
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