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zloy xaker [14]
3 years ago
8

HURRY Given the function f(x) = −5x2 − x + 20, find f(3). −28 −13 62 64

Mathematics
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer: I think the answer is 64 or -28

Step-by-step explanation:

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Which equation can be used to represent the statement? Sixteen is the same as one and two-tenths times a number added to negativ
andreyandreev [35.5K]

The equation can be used to represent statement 'Sixteen is the same as one and two-tenths times a number added to negative 8' is,

16=1.2n+(-8)

<h3>How to write algebraic equation from statement? </h3>

Algebraic equation are the expression which consist the variables, coefficients of variables and constants.

The algebraic equation are used represent the general problem in the mathematical way to solve them.

Steps to write down the simple algebraic equation from statement-

  • Identify all the factors of the expression.
  • Assume a variable for the changing values.
  • Put a coefficient for the variable, if there is any rate of change of variable.
  • Use constant numbers for the fixed values.

Given information-

The given statement is  'sixteen is the same as one and two-tenths times a number added to negative 8'.

The statement given in the problem is talking about a unknown number. Let the unknown number is n.

The number is sixteen is the same as one and two-tenths times a number added to negative 8.

This means when our number n, multiplied by the fraction 2/10, and added by the negative 8, then it becomes equal to the number 16. Mathematically,

16=n+\dfrac{2}{10}\times n+(-8)\\16=1.2n+(-8)

Thus the equation can be used to represent the given statement is,

16=1.2n+(-8)

Learn more about the algebraic expression here;

brainly.com/question/2164351

4 0
2 years ago
The length of a rectangle is 5 units more than the width. The area of the rectangle is 36 units. What is the width, in units, of
PIT_PIT [208]

Answer:

4

Step-by-step explanation:

Let y be the width of the rectangle

The length of the rectangle is 5 unit more than the width. This is written as:

Length = y + 5

Area = 36

Recall:

Area of rectangle = length x width

36 = (y + 5) x y

36 = y^2 + 5y

Rearrange the expression

y^2 + 5y — 36 = 0

To solve this problem by factorization, multiply the first term (i.e y^2) and last term ( i.e — 36) together. This gives — 36y^2

Next, find two factors of —36y^2 such that when we add them together it will result to the second term (5y). These factors are —4y and 9y. Now we substitute —4y and 9y in place of 5y in the equation. This is illustrated below:

y^2 + 5y — 36 = 0

y^2 —4y + 9y — 36 = 0

We factorize as follows:

y(y — 4) + 9(y —4) = 0

(y + 9) (y — 4) =0

y + 9 = 0 or y — 4 = 0

y = —9 or y = 4

Since the measurement can not be negative, therefore y (i.e the width) is 4

4 0
3 years ago
First gets brainliest if they answer in time!! hurry i’m getting timed!!! :(
Elanso [62]
Hi your answer will be -50
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7 and any multiple of 7

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