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faust18 [17]
2 years ago
12

What is f(−3) for the function f(a)=−2a2−5a+4?

Mathematics
2 answers:
Readme [11.4K]2 years ago
7 0

Answer:

f(-3)

f(a) = -2a² - 5a + 4

Substitute a with its value, -3

f(-3) = -2(-3²) - 5(-3) + 4

f(-3) = -2(9) + 15 + 4

f(-3) = -18 + 19

f(-3) = 1

the value of f(-3) is 1.

Makovka662 [10]2 years ago
7 0

Step-by-step explanation:

please mark me as brainlest

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A field is a rectangle with a perimeter of 960 feet. The length is 100 feet more than the width. Find the width and length of th
marta [7]
To start, let x represent the width and x+100 represent the length.

Since the perimeter of a figure is the sum of all the measurements of the side which can be represented by (x+100)+(x+100)+x+x and since you know your perimeter is 960 feet, you can set the expression equal to 960. This would look like this:
(x+100)+(x+100)+x+x=960

Once you have done that, combine any like terms (combine terms with the same variables and raised to the same power together) which would simplify to this:
4x+200=960

Now that you have your like terms simplified, subtract 200 from both sides to get 4x=760 and finally, to solve for x, or find the width, divide both sides by 4 to get x=190.

Now that you have your width, now you must find your length as the question asks to find the dimensions of the rectangular field. To find the length, add 100 to the width of (190) since according to the information given, the length is 100 more than the width. When you add 100 to 190, you should get that your length is 290.

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4 0
2 years ago
A square with side length 4 cm represents 20% of a larger figure what is the area of the larger figure?
victus00 [196]
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We are gonna use x to represent this number.

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8 0
3 years ago
What problem makes 49
torisob [31]
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6 0
3 years ago
8
blagie [28]

Answer:

The new function is g(x) = x² +1

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the function f(x) = x²

From graph ,

The parabola  y = x² is shifting to up with '1' units

                    y = x² +1

The new function is g(x) = x² +1

<u><em>Verification:-</em></u>

    y = x²+1

Put x=0 ⇒ y =1

The point (0,1) lies on the parabola y = x²+1

similarly put x =1 and y = 2

The Point (1,2) lies on the Parabola y = x²+1

∴ The new graph  y = x²+1

3 0
3 years ago
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