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AlladinOne [14]
2 years ago
9

PLEASE HELP !!!!!!!!!

Mathematics
2 answers:
notsponge [240]2 years ago
6 0
7x^2 - 3x +3
Hope that helps
vivado [14]2 years ago
3 0

Answer:

3x^{4} - 10x³ - x² - 11x + 6

Step-by-step explanation:

Each term on the upper row is multiplied by each term on the lower row.

This can be expressed as

3x²(x² - 5x + 2) + 2x(x² - 5x + 2) + 3(x² - 5x + 2) ← distribute parenthesis

= 3x^{4} - 15x³ + 6x² + 2x³ - 10x² + 4x + 3x² - 15x + 6 ← collect like terms

= 3x^{4} - 10x³ - x² - 11x + 6

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Step-by-step explanation:

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A school is preparing a trip for 400 students. The company who is providing the transportation has 10 buses of 50 seats each and
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<h2>The number of small buses used = 5</h2><h2>The number of big buses used  = 4</h2>

Step-by-step explanation:

Let us assume the total number of small buses needed = x

The capacity of 1 small bus  = 40

So, the capacity of x buses  = 40(x)  = 40 x

Let us assume the total number of big buses needed = y

The capacity of 1 big bus  = 50

So, the capacity of y buses  = 50(y)  = 50 y

Also, the total students travelling = 400

So, the number of students traveling by (Small bus + Big bus)  = 400

⇒ 40 x + 50 y = 400 ..... (1)

Also, the total number of drivers available  = 9

⇒ x +  y = 9  ..... (2)

Also, x  ≤ 8,   y ≤ 10

Now, solving both equations, we get:

40 x + 50 y = 400 ..... (1)

x +  y = 9  ⇒ y = (9-x) put in (1)

40 x + 50 y = 400  ⇒  40 x  + 50 (9-x)  = 400

or, 40 x  + 450 - 50 x  = 400

or, - 10 x  =- 50

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Hence the number of small buses used = 5

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Jocelyn is training for a race by running several miles each day. she tracks her progress by recording her average speed in minu
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Finding the regression equation, her average speed on the 9th day should be expected to be of 6.92 minutes per mile.

<h3>How to find the equation of linear regression using a calculator?</h3>

To find the equation, we need to insert the points (x,y) in the calculator.

Researching the problem on the internet, the values of x and y are given as follows:

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Hence, using a calculator, the equation for the average minutes per mile after t days is given by:

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