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katovenus [111]
3 years ago
6

Determine whether f(x) = 4x+5 is injective or not

Mathematics
1 answer:
ozzi3 years ago
6 0
Injective. (x) would have to be used in 2 places which would cross.
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You have 84 stickers to give to your class. There are 14 people in your class. How many stickers will each person get?
Sunny_sXe [5.5K]
6 because 84/16 is 6
4 0
4 years ago
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Solve the equation using square roots. 7x2 + 6 = 13
butalik [34]

Answer:

x = ±1

Step-by-step explanation:

=> 7x² = 13-6

=> 7x² = 7

<em>Dividing both sides by 7</em>

=> x² = 1

<em>Taking sqrt on both sides</em>

=> x = ±1

4 0
3 years ago
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Write an equation for a circle if the endpoints of a diameter are at (–7, 1) and (5, 1).
yulyashka [42]
The diameter is 12 units long. Their equation could be seen in y = 1, because it is a horizontal line. From x = - 7 to x = 0 is 7 units. From x = 0 to x = 5, is 5 units. 5 + 7 = 12. This means the radius is 6. We will use this later. If you need another way to find the radius, let me know. I can just use distance formula. 

We will use these endpoints to find the center. 

Midpoint = ( \frac{X1+X2}{2} ,  \frac{Y1+Y2}{2} )
= ( \frac{- 7 + 5}{2} ,  \frac{1 + 1}{2} )
= ( \frac{-2}{2} ,  \frac{2}{2} )
= (- 1, 1)

This is the center. 

The equation of a circle is (x - h)² + (y - k)² = radius² where (h, k) is the center. 

Plug in our given information now.

(x + 1)² + (y - 1)² = 6²

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3 0
4 years ago
Mr. Atkins flies from Miami, Florida to Los Angeles, California. The trip is 7, 516 kilometers. He makes the trip 4 times a year
alex41 [277]

Answer:

30064, if round trip multiply by 2

Step-by-step explanation:

so this is just multiplication. I am not sure if its round trip, but if its not then its just the 7516 times 4= 30064

4 0
4 years ago
Given b= 4 and c= -5, evaluate b2 - c2.<br> 41<br> -2<br> -9
irina [24]

Answer:

-9

Step-by-step explanation:

b² - c²

= 4² - (-5)²

= 16 - 25

= -9

4 0
3 years ago
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