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julsineya [31]
3 years ago
7

Solve the proportion.

Mathematics
2 answers:
-Dominant- [34]3 years ago
6 0
I think the answer is B
melisa1 [442]3 years ago
3 0

Answer:

you use older of operations to solve this

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Equation for a circle with a diameter that has endpoints at (2, –5) and (8, –9)
chubhunter [2.5K]

The standard form for the equation of a circle is :

<span><span> (x−h)^2</span>+<span>(y−k)^2</span>=r2</span><span> ----------- EQ(1)
</span> where handk are the x and y coordinates of the center of the circle and r<span> is the radius.
</span> The center of the circle is the midpoint of the diameter.

 So the midpoint of the diameter with endpoints at (2,-5)and(8,-9) is :

 ((2+(8))/2,(-5+(-9))/2)=(5,-7)

 So the point (5,-7) is the center of the circle.

  Now, use the distance formula to find the radius of the circle:

  r^2=(2−(5))^2+(-5−(-7))^2=9+4=13

 ⇒r=√13

 Subtituting h=5, k=-7 and r=√13 into EQ(1) gives :

 (x-5)^2+(y+7)^2=13

5 0
3 years ago
Jacob and Sarah are saving money to go on a trip. They need at least $1975 in order to go. Jacob mows lawns and Sarah walks dogs
velikii [3]

Question asked:Jacob and Sarah are saving money to go on a trip. They need at least $1975 in order to go. Jacob mows lawns and Sarah walks dogs to raise money. Jacob charges $25 each time he mows a lawn and Sarah charges $15 each time she walks a dog. The number of dog walks that Sarah has scheduled is no more than four times the number of lawns Jacob has scheduled to mow. Sarah will walk at least 50 dogs.Write a set of constraints to model the problem, with x representing the number of lawns mowed and y representing the number of dogs walked.

My answer:

They need at least $1975. Jacob charges $25 each time he mows a lawn and Sarah charges $15 each time she walks a dog.

25x + 15y ≥ 1975

The number of dog walks that Sarah has scheduled is no more than four times the number of lawns Jacob has scheduled to mow.

y ≤ 4x

Sarah will walk at least 50 dogs.

y ≥ 50

4 0
3 years ago
First
snow_tiger [21]
If you are looking for the total it is 81.839
7 0
3 years ago
The circumference of a circle is 31.4 centimeters. what is the area of the circle?
icang [17]

Answer:  197.292

Step-by-step explanation:

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2 years ago
How to multiply mixed fractions
morpeh [17]

Answer:

Ez

Step-by-step explanation:

Change each number to an improper fraction.

Simplify if possible.

Multiply the numerators and then the denominators.

Put answer in lowest terms.

Check to be sure the answer makes sense.

8 0
3 years ago
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