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ryzh [129]
3 years ago
5

Alex is flying a kite. Her hand is 3 feet above the ground and is holding the end of a 300-ft kite string which makes and angle

of 57 with the horizontal. How high is the kite above the ground?
Mathematics
1 answer:
weqwewe [10]3 years ago
4 0
So the answer is about 248.6 ft 

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A cell phone retailer used a mark-up rate of 60% on a cellphone case that originally cost $5. To find the new price of the case
sweet-ann [11.9K]

Answer:

$8

Step-by-step explanation:

5 increase 60% =

5 × (1 + 60%) = 5 × (1 + 0.6) = 8

7 0
3 years ago
If f (x) = x² - 7, evaluate the following: f(12) f(-7)
Julli [10]

Answer: f(12) = 137, f(-7) = 42

Step-by-step explanation: In a function, what you want to do is plug in the value they give you for x. This means you substitute x with the value they are looking for.

In this case, they are looking at 12 and -7. Let's do 12 first.

The equation becomes (12^2) - 7. 12^2 is 144, and 144-7 is 137.

Now we do -7. The equation becomes (-7)^2 - 7. -7^2 is 49, and 49 - 7 is 42.

Hope this helped!

7 0
1 year ago
Rectangle ABCD is on the coordinate plane. The equation of line AB is y = 2/3x+4. What is the slope of line AD? Explain your rea
Delvig [45]

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Step-by-step explanation:

6 0
3 years ago
The sum of two numbers is 12. The difference of the two numbers is 22. Find the two numbers
valentina_108 [34]

Answer:

-5 and 17

Step-by-step explanation:

The sum of two numbers (let's just say number a and number b) is 12.

a + b = 12

The difference between the same two numbers (still a and b) is 22.

b - a = 22

(Move variable a to the right side to get the following.)

b = 22 + a

(This way, we can substitute b = 22 + a into the first equation, a + b = 12, and solve.)

a + (22 + a) = 12

a + a + 22 = 12

2a = -10

a = -5

a + b = 12

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7 0
2 years ago
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4 0
3 years ago
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