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3 years ago

(x + 3x3 + 8x2) - (8x – 7x3 + 7x2)

Mathematics

2 answers:

Dafna11 [192]3 years ago

7 0

Answer:

10 x 3 + x 2 -7 x

Step-by-step explanation:

Phantasy [73]3 years ago

5 0

Answer: 10x^3

Step-by-step explanation:

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Please help explanation if possible

hram777 [196]

Answer:

y = 1/7x + 0

Step-by-step explanation:

3x + 21y = 21

21y = -3x + 21

y = -3/21x

y = 1/7x

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3 years ago

Which graph shows a negative slope and a positive y-intercept?

Likurg_2 [28]

Answer: where are the graphs?

Step-by-step explanation:

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3 years ago

What is the area of the trapezoid shown? trapezoid A = ______ units²?

notka56 [123]

Answer:

74.1 units²

Step-by-step explanation:

Area of the trapezoid shown = ½×(AD + BC)×BE

Use distance formula, $d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$ to find AD, BC, and BE.

✍️Distance between A(-9, 4) and D(9, 1):

$AD = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} = \sqrt{(9 -(-9))^2 + (1 - 4)^2}$

$= \sqrt{(18)^2 + (-3)^2}$

$= \sqrt{(324 + 9} = \sqrt{333}$

$AD = 18.2 units$ (nearest tenth)

✍️Distance between B(-4, -3) and C(2, -4):

$BC = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} = \sqrt{(2 -(-4))^2 + (-4 -(-3))^2}$

$= \sqrt{(6)^2 + (-1)^2}$

$= \sqrt{(36 + 1} = \sqrt{37}$

$BC = 6.1 units$ (nearest tenth)

✍️Distance between B(-4, -3) and E(-3, 3):

$BE = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} = \sqrt{(-3 -(-4))^2 + (3 -(-3))^2}$

$= \sqrt{(1)^2 + (6)^2}$

$= \sqrt{(1 + 36} = \sqrt{37}$

$BE = 6.1 units$ (nearest tenth)

✔️Area of the trapezoid:

Area = ½×(AD + BC)×BE

Plug in the values into the formula

Area = ½×(18.2 + 6.1)×6.1

Area = ½×(24.3)×6.1

Area = 74.115 ≈ 74.1 units² (nearest tenth)

5 0

3 years ago

If a buy 17.01 in gas a d ask for one five dollar lottery ticket two one dollar 1$ lottery tickets and one 3$ lottery ticket and

kaheart [24]

17.01+5+1+1+3-5-2 = 20.01

$100 - 20.01 = $79.99

8 0

3 years ago

Read 2 more answers

I need to know what is the smaller x and the larger x?

yaroslaw [1]

Say x = 5

3x = 15

x scuared would be 5×5 which equals 25 so 3x is the smaller x and x squared is the larger x

4 0

4 years ago