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ladessa [460]
3 years ago
12

Daniel used the formula to find the area of the following special trapezoid. His work is shown. Identify his error and correct i

t to find the area of the special trapezoid. \(\text{Line}\ 1:\ A=\frac{1}{2}\left(6\right)\left(7+7\right)\) \(\text{Line}\ 2:\ A=\frac{1}{2}\left(6\right)\left(14\right)\) \(\text{Line}\ 3:\ A=\left(3\right)\left(7\right)\) \(\text{Line}\ 4:\ A=21\text{ cm}^2\)
Mathematics
2 answers:
Mamont248 [21]3 years ago
6 0

Answer:

Step-by-step explanation:

CSYJDKUFTIGY.,JVCMHFXNDZBFREGAHTSJRDYKTHMCXGNZDFHJYDKUTFLCG,JHFMXJZDSRUTSIDFOULVGCFK

disa [49]3 years ago
5 0

Answer:

I had the same issue.

Step-by-step explanation:

Here is the actual equation.

A=1/2(6)(7+7)

A=1/2(6)(14)

A=(3)(7)

A=21cm^2

He messed up on line 3 by multiplying 1/2 to both numbers. It should be A=(3)(14) and he would have gotten 42.

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What is the slope indicated in the table below? Х 10 20 40 Y 20 17 14 11 30​
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2 years ago
the length of the rectangle is 2 less than 3 times the width. The perimeter is 12. Find the length and the width.
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width=2
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5 0
2 years ago
What is the equation in vertex form of the quadratic function with a vertex at (-1, -4) that goes through (1, 8)?
cestrela7 [59]

Answer:

y = 3(x+1)^2 - 4

Step-by-step explanation:The general form of the equation of a quadratic function whose vertex is (h,k) and whose leading coefficient is a is:

y - k = a(x-h)^2, or

y      = a(x-h)^2 - k

Substituting the coefficients of the vertex (-1, -4), we get:

y      = a(x + 1)^2 - 4

Substituting the coordinates of the given point, (1,8), we get:

8      = a(1+1)^2 - 4, which simplifies to:

8      = a(2)^2 - 4, or

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5 0
3 years ago
Help asappppp tyyy ​
True [87]

Given:

Compound shape

To find:

The area of the compound shape.

Solution:

The compound shape is splitted into two parallelograms.

<u>Bottom parallelogram:</u>

Base = 7.5 cm

Height = 5 cm

Area of the parallelogram = base × height

                                           = 7.5 × 5

                                           = 37.5 cm²

The area of the Bottom parallelogram 37.5 cm².

<u>Top parallelogram:</u>

Base = 7.5 cm

Height = 4.5 cm

Area of the parallelogram = base × height

                                           = 7.5 × 4.5

                                           = 33.75 cm²

The area of the top parallelogram 33.75 cm².

Compound shape = 37.5 + 33.75

                               = 71.25 cm²

The area of the compound shape is 71.25 cm².

7 0
3 years ago
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