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kenny6666 [7]
2 years ago
10

Which function is positive for the entire interval [-3, -2]?

Mathematics
1 answer:
Aleksandr-060686 [28]2 years ago
4 0

Answer:

Answer: A function that is positive in the entire interval [-3, -2] is -x2 - 5x - 5. Let's understand the solution. Explanation: If the function is represented by a downward parabola, then the function must be quadratic and the coefficient of x2 must be negative.

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Help with some algebra please?
kipiarov [429]
Vertex form is   f(x) = a(x - b)^2 + c    where the vertex is (b, c) and a is some constant.

So for the first part we have  f(x) = a(x + 6)^2 - 1

for root -9:-  a( -9+6)^2 - 1 = 0
9a - 1 = 0 , a = 1/9

The other 3 are derived in the same way.
so required equation is f(x) = (1/9)(x + 6)^2 - 1




7 0
3 years ago
Solve the system using elimination. y – x = 13 7y + x = 11
Eva8 [605]

Answer:

x= -10 ; y= 3

Step-by-step explanation:

see the picture

6 0
3 years ago
23j-21g+20e-13+52e-37j+45-49e<br> (Like terms)
eduard

The solution to the algebraic expression is: 23e - 21g - 14j + 32

What are algebraic expressions?

Algebraic expressions are mathematical expressions that contain variables, coefficients, and arithmetic operations such as addition, subtraction, division, and multiplication.

Solving algebraic expressions are an important part of mathematics as it helps to improve the aptitude and solving skills of the students.

From the given information, we have;

23j - 21g + 20e - 13 + 52e - 37j + 45 - 49e

let's rearrange by taking the like terms to the same sides;

= 23j -37j - 21g + 20e + 52e - 49e - 13 + 45

= -14j - 21g + 23e + 32

= 23e - 21g - 14j + 32

Therefore, we can conclude that the solution to the algebraic expression is: 23e - 21g - 14j + 32

Learn more about solving algebraic expressions here:

brainly.com/question/4344214

#SPJ1

3 0
2 years ago
A ball is dropped from a height of 180 meters. The height of the ball can be represented by
Alex Ar [27]
I think it is C but it also could be B as well
6 0
3 years ago
The base of a triangular garden measures 5.5 feet. It takes 33 pounds of mulch to cover the garden. If 4 pounds of mulch are nee
Stells [14]
The dimensions given when you have a triangle is the base and height of the triangle. The formula for the area is

A = 0.5bh

The unknown here is h. We can determine that from the cost of mulch that covers the whole area of the triangle. The equation would be:

4A = 33

Substituting A = 0.5*5.5*h = 2.75h to the equation:

4(2.75h) = 33
11h = 33
h = 33/11
h = 3 feet
4 0
3 years ago
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