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Bond [772]
3 years ago
11

If you are able to help that will be great:)

Mathematics
1 answer:
Schach [20]3 years ago
7 0
1. 14.3-2*5²÷5=14.3-10=4.3
2. Result is Twenty one
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3 years ago
Help what polynomials are there??
N76 [4]

Answer:

All of them are polynomials except c.

Step-by-step explanation:

Polynomials are in the form:

a_0+a_1x+a_2x^2+a_3x^3+a_4x^4+a_5x^5+a_6x^6+\cdots +a_nx^n

You can see here there are no extra symbols like square root, cube root, absolute value, and so on on the variable x...

We also don't have division by a variable.  All the exponents are whole numbers.

a) While it has a square root, it is not on a variable so a is a polynomial.  The exponents on the variables are whole numbers.

b) b is a polynomial also because all the exponents are whole numbers.

c) This is not a polynomial because there is a square root on a variable.

d) This is a polynomial.  All the exponents are whole numbers.

8 0
3 years ago
Can y’all plz help me with this
Katen [24]

Answer:

If I did my math right it should be 10.20

Step-by-step explanation:

-78.55 + 128.75 = 50.2

50.2 - 40 = 10.2

And then obviously just add the zero at the end bc its money

3 0
2 years ago
A ball is thrown from an initial height of 5 feet with an initial upward velocity of 31 ft/s. The ball's height (in feet) after
mr Goodwill [35]

Solving a quadratic function, it is found that the ball has a height of 19 feet at t = 0.72 seconds and t = 1.22 seconds.

<h3>What is a quadratic function?</h3>

A quadratic function is given according to the following rule:

y = ax^2 + bx + c

The solutions are:

  • x_1 = \frac{-b + \sqrt{\Delta}}{2a}
  • x_2 = \frac{-b - \sqrt{\Delta}}{2a}

In which:

\Delta = b^2 - 4ac

In this problem, the function is:

h(t) = -16t² + 31t + 5

The height is of 19 feet when h(t) = 19, hence:

19 = -16t² + 31t + 5

16t² - 31t + 14 = 0.

Then:

  • \Delta = (-31)^2 - 4(16)(14) = 65
  • x_1 = \frac{31 + \sqrt{65}}{32} = 1.22
  • x_2 = \frac{31 - \sqrt{65}}{32} = 0.72

More can be learned about quadratic functions at brainly.com/question/24737967

#SPJ1

3 0
1 year ago
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