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zmey [24]
3 years ago
5

Andrew is at point A. A deer is 3km directly north of Andrew, at point D. Brian is 1.8 km due west of Andrew at point B. Calcula

te the distance between Brian and the deer.
Mathematics
1 answer:
Vesna [10]3 years ago
6 0
<span>3.49857113691</span><span>km ..............................................................................


</span>
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Which value of x make the equation 1.25(4x − 10) = 7.5 true?
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Answer:

55.76

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
Please solve with explanation (high points)
IgorLugansk [536]

So, we know that:

A=\dfrac{1}{2}ab\\P=a+b+c\\a^2+b^2=c^2

We also know that (a+b)^2=a^2+2ab+b^2. We will use that fact to find c in terms of A and P.

A=\dfrac{1}{2}ab\Rightarrow 2ab=4A\\P=a+b+c\Rightarrow a+b=P-c

Therefore:

(P-c)^2=c^2+4A\\P^2-2cP+c^2=c^2+4a\\2cP=P^2-4A\\c=\dfrac{P^2-4A}{2P}

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2 years ago
A circular garden has a circumference of 63 yards. Lars is digging a straight line along a diameter of the garden at a rate of 5
Harrizon [31]

Answer:

4 hours

Step-by-step explanation:

If the circumference of the circular garden =63 yards

Circumference of a Circle =2πr=πd (d=diameter)

Therefore:

πd= 63

diameter of the circular garden =63/3.14=20 yards

If he digs at a rate of 5 yards per hour, the time required to dig across the garden will be:

20 yards/5 yard per hours = 4 hours

It will take him 4 hours to dig across the circular garden.

6 0
3 years ago
You bought one skirt at $18.27, two shirts at $15.78, and a pair of shoes at $34.50. if the tax rate is 7%, what is the total co
Ludmilka [50]
I believe the answer to that problem would be $68.55, since you have to add them together and then multiply them by .07 for the percentage. 
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3 years ago
Suppose Jordan buys five notebooks with a unit rate of $3 and five packages of pens with a unit rate of $1. Which of the express
ZanzabumX [31]

Answer:

Jordan's purchase was $20

Step-by-step explanation:

3x5=15    5x1=5      5+15=20

5 0
3 years ago
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