3 years ago

The first four terms

1 answer:

8 0

An1 = 3n^2 -7 = 3(1)^2 -7 = 3(1)-7 = -4

an2 = 3n^2 -7 = 3(2)^2 -7 = 3(4)-7 = 5

an3 = 3n^2 -7 = 3(3)^2 -7 = 3(9)-7 = 20

an4 = 3n^2 -7 = 3(4)^2 -7 = 3(16)-7 = 41

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A rectangle has side lengths 2x + 3 and 5x - 2.

xz_007 [3.2K]

Answer:

10x² + 11x - 6

Step-by-step explanation:

The area (A) is the product of the sides, that is

A = (2x + 3)(5x - 2) ← expand using FOIL

= 10x² - 4x + 15x - 6 ← collect like terms

= 10x² + 11x - 6

5 0

2 years ago

Find the area of the regular pentagon. 4.1 cm 6 cm Area = [?] cm? Enter your answer to the nearest tenth.

Assoli18 [71]

Answer:

Area of the given regular pentagon is 61.5 cm².

Step-by-step explanation:

Area of a regular polygon is given by,

Area = $\frac{1}{2}aP$

Here, a = Apothem of the polygon

P = Perimeter of the polygon

Apothem of the regular pentagon given as 4.1 cm.

Side of the pentagon = 6 cm

Perimeter of the pentagon = 5(6)

= 30 cm

Substituting these values in the formula,

Area = $\frac{1}{2}(4.1)(30)$

= 61.5 cm²

Therefore, area of the given regular pentagon is 61.5 cm².

8 0

2 years ago

Solve this system by substitution. y = 5x - 15 y = 2x - 6 *Remember to write your answer as a coordinate point (x,y Solve this s

oksano4ka [1.4K]

5x - 15 = 2x - 6
3x = 9
x = 3
Y = 5(3) - 15
Y = 0
(3,0)

7 0

2 years ago

4m-2(3+5m) in standard form

NNADVOKAT [17]

Simplified: -6m-6
Factored: 6(m+1)

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2 years ago

What percent is 29.5 is 10.03

Slav-nsk [51]

The percentage of 29.5 of 10.03 is 2.95885%

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2 years ago