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konstantin123 [22]
3 years ago
7

(4x+1)(5x-2) Multiplying polynomials

Mathematics
2 answers:
kumpel [21]3 years ago
5 0

Answer:

{20x}^{2}  - 3x - 2 = 0

Step-by-step explanation:

(4x+1)(5x-2) = 0 \\ 20x {}^{2}  - 8x + 5x - 2 = 0 \\  {20x}^{2}  - 3x - 2 = 0

Anni [7]3 years ago
4 0

<em>Hop</em><em>e</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em><em>.</em><em>✔</em><em>✔</em>

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Inessa [10]

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A line passes through the points (0, 9) and (9, 19). What is its equation in slope-intercept form?
STatiana [176]

Answer:

y = 10/9x + 9

Step-by-step explanation:

To write the equation in its slope-intercept form, y = mx + b, we need to find the slope (m) of the line and its y-intercept (b).

Given the points (0, 9) and (9, 19), we can solve for the slope of the line using the following formula:

m = \frac{y2 - y1}{x2 - x1}

Let (x1, y1) = (0, 9)

and (x2, y2) = (9, 19)

Substitute these values on the formula:

m = \frac{y2 - y1}{x2 - x1} = \frac{19 - 9}{9 - 0} = \frac{10}{9}

Therefore, the slope (<em>m </em>) = 10/9.

Next, the <u>y-intercept</u> is the point on the graph where it crosses the y-axis, and has the coordinates, (0, <em>b </em>). It is also the value of the y when x = 0.

One of the given points is the y-intercept of the line, given by (0, 9). The y-coordinate, 9, is the value of b.

Therefore, the linear equation in slope-intercept form is: y = 10/9x + 9

3 0
2 years ago
Maggie has $40 to buy a new dress and hair accessory for her school dance the dress she wants cost $35.75 the cost of her hair a
jonny [76]

Answer:

Yes Maggie has enough money to purchase the dress and hair accessory.

Step-by-step explanation:

Dress = $35.75

Hair accessory = $2.80

Total amount of money = $40

Does her have enough money?

Total Money in pocket - (Dress cost + hair accessory)

 $40.00 - ($35.75 + 2.80)

  $40.00 - ($36.00 + $3.00)     Round to the nearest dollar

  $40.00 - $39.00 = $1.00

Yes

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3 years ago
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IgorLugansk [536]

Answer:

d 7/4

Step-by-step explanation:

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3 years ago
Please help i am very confused
Elena L [17]

Answer:

the mean is the average, so you would add up all the numbers and then divide by the amount of numbers

so the answer would be 67.5

8 0
4 years ago
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