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wariber [46]
2 years ago
14

Help with this please free brainlist i promise only if you get it right though

Mathematics
1 answer:
goldenfox [79]2 years ago
5 0

Answer:eirther C or D not sure

Step-by-step explanation:

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Is {(5, 12), (-4,9), (-2,-7), (-4,0), (3, 2)}<br> A function? Please help me
Anna71 [15]

Answer:

Not a function

Step-by-step explanation:

(-4,9), (-4,0)   : one input (-4) with 2 output -9 , 0

6 0
2 years ago
Which of these is the standard form of the following function?
Nady [450]

Answer:

A

Step-by-step explanation:

Given

f(x) = - 9(x + 5)² + 4 ← expand parenthesis using FOIL

     = - 9(x² + 10x + 25) + 4 ← distribute parenthesis by - 9

     = - 9x² - 90x - 225 + 4 ← collect like terms

     = - 9x² - 90x - 221 ← in standard form

4 0
3 years ago
Read 2 more answers
The sum of three consecutive odd numbers is 69. What are the three numbers?
n200080 [17]

Answer:

21, 23, 25

Step-by-step explanation:

Ok, so this one may seem a little tricky, so I'll try to explain it as best as I can. :)

So because they are consecutive odd numbers, that means they are odd numbers that are one after the other. This means each number is 2 apart from the next. So by using this, we know that there is a difference of 6 between the highest and lowest number. Now let's try and make an equation:

3o + 6 = 69

Now in order to get O by itself we have to subtract 6 from both sides:

3o = 63

Now we just have to divide by three on both sides:

o = 21

So now, we know that the lowest number is 21, but we have to add 2 to get 23, and then another 2 to get 25.

Hope this helps :)

5 0
3 years ago
Read 2 more answers
A number times 7 is at least the number plus 6.6.<br> Write the inequality.
Semmy [17]

Answer:

7x ≥ x + 6

A number signifies <em>x</em>.

Replace "a number" with x and then write out the inequality.

4 0
2 years ago
BRAINLIEST ANSWER THIS IS URGENT PLEASE HURRY. ANSWER ALL THE BLANK BOXES.
shusha [124]

The answers are:

1) x

2) x

3) \frac{ln(x+4)}{2}

The explanation for this answer is shown below.

1. To solve this problem you must apply the following proccedure:

2. You have the function f(x)=e^{2x}-4\\  y=e^{2x}-4

3. You must switchx and y and then solve forx:

x=e^{2y}-4\\ x+4=e^{2x}\\ ln(x+4)=2y\\ y=\frac{ln(x+4)}{2}

4. Finally, you obtain:

f^{-1}(x)=\frac{ln(x+4)}{2}

7 0
2 years ago
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