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IRINA_888 [86]
3 years ago
7

True or False ! To determine the inverse of a function is a function you can perform the vertical line test

Mathematics
2 answers:
Alborosie3 years ago
6 0
I am pretty sure it is true
Advocard [28]3 years ago
5 0
True. We studied this last year
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The sum of two numbers is 200 and the two numbers are in a ratio of 4:6 find the larger number
devlian [24]
X = 1st number
y = 2nd number

x + y = 200
x : y = 4 : 6

ok! let's substitute numbers!

4 * 10 : 6 * 10

40 : 60

40 + 60 = 200

100 ≠ 200

Too small!

That is exactly two times smaller than 200 so let's try 2 times greater than multiplying by 10

4 * 20 : 6 * 20
80 : 120

80 + 120 = 200

200 = 200

Now it says to find the larger number. Which is y.

x :y = 4 : 6 = 80 : 120

so, y is 120

y = 120

Answer : y = 120. The larger number is 120.
3 0
4 years ago
A 25-foot ladder is placed 7 feet from the wall, as shown.
Ludmilka [50]

Answer:

The answer is 8 feet.

Step-by-step explanation:

Let x = height where the ladder hits the building

7 squared+x squared=25 squared

49+x squared=625

x squared=576

x=24 feet

Let x = distance from wall:

x^2 + 20^2 = 25^2

x^2 + 400 = 625

x^2 = 225

x = 15 feet

6 0
3 years ago
Read 2 more answers
Rectangle is 2/5 inches long and 1/3 inches wide what is the area of the rectangle in simplest form
tekilochka [14]
Area= length * width
A= 2/5 long * 1/3 wide
A= (2 * 1) / (5 * 3)
A= 2/15

2/15 is the area & simplest form

Hope this helps! :)
3 0
4 years ago
Please help :) thank you!
const2013 [10]

Answer:

A

Step-by-step explanation:

just plug in the formula

5 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!
Anna [14]
4 inches, wryyyyyyyyyyy
3 0
4 years ago
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