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3 years ago

Rewrite 2x^2+6x-8 and x+3 in standard form

Mathematics

1 answer:

musickatia [10]3 years ago

4 0

Answer:

2x^2+6x^2-5

Step-by-step explanation:

1. (2x^2+6x-8)+(x+3)

2. combine like terms

3. 2x^2+6x^2-5

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mash [69]

Expand

Simplify 0.9x + 1.26 - 2.3 + 0.1 * x to x - 1.04

add 1.04 to both sides

simplify 1.6 + 1.04 to 2.64

Answer: x = 2.64

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3 years ago

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8x -6=18 what does x equal

professor190 [17]

Answer:

x = 3

Step-by-step explanation:

8x -6 = 18

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2 years ago

7y(8y - 7) + 46y Please Simplify

Dafna1 [17]

Distribute first
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3 years ago

An isosceles trapezoid has base angles of 45° and bases of lengths 8 and 14. The area of the trapezoid is

Mice21 [21]

Answer:

Option A is correct.

Step-by-step explanation:

Given an isosceles trapezoid has base angles of 45° and bases of lengths 8 and 14. we have to find the area of isosceles trapezoid.

An isosceles trapezoid has base angles of 45° and bases of lengths 8 and 14.

From the figure attached , we can see an isosceles trapezoid ABCD,

AB = 8cm and CD=14cm

So we have to find the value of AE which is the height of Trapezoid in order to find area.

In ΔAED

$tan\angle 45 =\frac{AE}{ED}$

⇒ $AE=1\times 3$

∴ AE = DE =3cm

$\text{The area of the trapezoid=}\frac{h}{2}\times (a+b)$

h=3cm, a=14cm, b=8cm

$Area=\frac{3}{2}\times(14+8)=\frac{3}{2}\times 22=33 units^2$

hence, $\text{The area of the trapezoid is }33 units^2$

Option A is correct.

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