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mihalych1998 [28]
3 years ago
11

Joe collect stamps he decided to sell half of his stamp collection to Frank and use the money to buy 10 new Sam's Joe now has 26

stamps in his collection write and solve an equation to find out how many stamps were originally in Joe's collection
Mathematics
1 answer:
ANTONII [103]3 years ago
6 0

Answer:

32

Step-by-step explanation:

If he has 26 now, he had 16 before he bought the 10 more. If he had 16, he would have had 32 before he sold half of them

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Sitting on a park bench, you see a swing that is 100 feet away and a slide that is 80 feet away. The angle between them is 30 de
leva [86]

We are given : Distance of the swing = 100 feet.

Distance of slide = 80 feet.

Angle between swing and slide = 30 degrees.

We need to find the distance between the swing and the slide.

Distance of swing, distance of slide and distance between the swing and the slide form a triangle.

We can apply cosine law to find the distance between the swing and the slide.

c^2 = a^2 +b^2  - 2ab cos C

c^2 = 100^2 +80^2 - 2(100)(80) cos 30°

c^2 = 10000 + 6400 -2* 8000 (\frac{\sqrt{3}} 2)}

c^2 = 16400 - 8000\sqrt{3}

c^2 = 16400 - 13856

c^2 = 2544

c =\sqrt{2544}

c= 50.44

c = 50 feet approximately.

<h3>Therefore, the approximate distance between the swing and the slide is 50 feet.</h3>
5 0
3 years ago
Read 2 more answers
6. a) The mid point of a line segment is (1,-1) whose one end is (-1, -3). Find the other end. ​
Anna [14]

Answer:

Step-by-step explanation:

mid point = [(a1 + a2)/2 , (b1 + b2)]

(a1,b1) = first point

(a2,b2) = end point

Using all x coordinates

(a1 + a2)/2 = 1

(-1 + a2)/2 = 1

-1 + a2 = 2

a2 = 3

Using all y coordinates

(b1 + b2)/2 = -1

(-3 + b2)/2 = -1

-3 + b2 = -2

b2 = -1

thus end coordinate = (3, -1)

5 0
2 years ago
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masya89 [10]

Answer:

4

Step-by-step explanation:

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f(a) = f(3) = - 5 ← from table , then

average rate of change = \frac{-1-(-5)}{4-3} = \frac{-1+5}{1} = 4

3 0
3 years ago
Melanie has a piece of cloth 12 and 1/3 yards long. How many 3/4 yard-long pieces can be cut from the cloth?
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8 0
4 years ago
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If x is 1, then 23x is 23, so we have 23-1=22 as the answer.
7 0
3 years ago
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