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Artyom0805 [142]
3 years ago
11

The accompanying graph shows the amount of

Mathematics
1 answer:
ivann1987 [24]3 years ago
3 0

Answer:

The answer is B. 30 seconds

You might be interested in
20 PTS + BRAINLIEST
Rom4ik [11]

Answer:

a) -6

b) 3

-------

a) 12

b) -2

Step-by-step explanation:

The initial value of the line is always the constant at the end of the equation.

The rate of change is always the coefficient of x.

6 0
2 years ago
A school has 617 students. Each class has between 28 and 32 students. Which is the best estimate of the number of classes in the
scZoUnD [109]

Answer:

20

Step-by-step explanation:

617/28=  22 (rounded too)

617/32= 19 ( rounded too)

19-22 is teh amount of classes that can be filled with 28 to 32 students.

20 is correct because it is around the amount of classes that there can be. !4 is too little so the number of students should be smaller.

30 and 60 classes are to big. there would only be about 10 or 20 kids per class

6 0
3 years ago
Solve the equation.<br> x² + 6x+15=0
lara [203]

Answer:

x = -3 + i√6 and x = -3 - i√6

Step-by-step explanation:

Let's apply the "completing the square" method to find the roots of this equation.

Take half of the coefficient 6 of x, square it and add this result to x^2 + 6x.  Then subtract the same quantity:

x^2 + 6x + 15 becomes

x^2 + 6x + 3^2 - 3^2 + 15 = 0

Rewriting the first three terms as the square of a binomial, we ge:

(x + 3)^2 - 9 + 15 = 0, which simplifies to:

(x + 3)^2 + 6 = 0, or (x + 3)^2 = -6

Taking the square root of both sides:

x + 3 = ±i√6

Then the two roots are complex:

x = -3 + i√6 and x = -3 - i√6

3 0
3 years ago
Can someone please help <br><br> f(x) = -3x + 1, then<br> f^-1(x) =
weqwewe [10]

Answer:

f ( x ) = -3x + 1

to find it's inverse let f(x)= y

y= -3x + 1

x = - 3y + 1

-3y = x -1

y = -(x -1)/3

Hope this helps.

3 0
3 years ago
Rewrite the equation 2y - 4x = 10 in function notation where f(x)= y.<br> f(x)=
Vladimir [108]

Answer:

Answer:

f(x) = 5 + 2x

y+4x^2-1 is the same as y=-4x^2+1, then replace y with f(x); f(x)=-4x^2+1. After you do that, replace x with 2; f(2)=-4(2)^2+1. 2^2=4, 4 times -4=-16, -16+1=-15. So f(2)=-15.

4 0
3 years ago
Read 2 more answers
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