Find the area of trapezoid

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

4 0

Area = 1/2 h (b1 + b2)

If we draw another line inside the trapezoid half way between the top and bottom lines. This line will cut the sides on the left and right exactly in half.

And that is exactly what is happening in this picture. The side to the right is perfectly divided in half and the side to the left is also divided in half by that dashed line. That means that the second upper half of trapezoid is also 3, which makes the height to be 6.

Now that you know the height, you can find out the area.
(17+7)/2*6 = 72 cm^2

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Which of the following correctly shows the quadratic formula for the given equation? 3x2 - 6x + 8 = 0

frez [133]

The quadratic formula is expressed as:

x = (-b +/- √(b^2 - 4ac) ) / 2a

where a, b and c are the coefficients of the quadratic equation with the form ax^2 + bx + c=0

Therefore, the quadratic equation would be:

a = 3
b = -6
c = 8

x = (-(-6) +/- √((-6)^2 - 4(3)(8) ) / 2(3)

Hope this helps.

7 0

3 years ago

Hello can you please help me posted picture of question

ollegr [7]

The correct option is (B) 4x^2 + 18x + 18

Explanation:
The area is given as:
(3+2x)(6+2x)

To find the polynomial just simplify it.
3(6+2x) + 2x(6+2x)

18 + 6x + 12x + 4x^2

4x^2 + 18x + 18

7 0

2 years ago

What is the range of y = log Subscript 8 Baseline x? all real numbers less than 0 all real numbers greater than 0 all real numbe

Doss [256]

Answer:

All real numbers

Step-by-step explanation:

To find the range of the function $y=\log_8x,$ draw the graph of ths function (see attached diagram for details).