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3 years ago

What is the area of the following trapezoid?

Mathematics

2 answers:

Luba_88 [7]3 years ago

7 0

square area = 4.5 * 5 =22.5

triangular areas:

7.5 -4.5 = 3/2 = 1.5

1.5 * 5 = 7.5

total area

22.5 + 7.5 = 30 in^2

please mark brainliest

xxMikexx [17]3 years ago

3 0

A = (B + b)xH : 2

A = (4.5+7.5) x 5 : 2

A = 12 x 5 : 2

A = 60 : 2

A = 30 in²

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What is the measure ?

Vlad1618 [11]

It should be 120 as well, but if not try 60.

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3 years ago

What is the volume of the doorstep below

kati45 [8]

Answer:

$V=63\ in^3$

Step-by-step explanation:

-The total volume will be the sum of the volumes of the triangular section plus the rectangular section.

#Volume triangular section:

$V=Base\ Area\times length\\\\Base\ Area=\frac{1}{2}bh\\\\=\frac{1}{2}\times 3\times 3\\\\=4.5\\\\\therefore V_t=4.5\times 6\\\\=27\ in^3$

#Volume rectangular section:

$V=lwh\\\\=3\times 2\times 6\\\\=36\ in^3\\\\\therefore V_r=36\ in^3$

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$V=V_t+V_r\\\\=27+36\\\\=63\ in^3$

Hence, the doorstep's volume is $63\ in^3$

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3 years ago

(6x-4)•(5x-3)<br><br> find area and perimeter in feet

Alexus [3.1K]

*IMPORTANT* This < means up words i just don't know how to write it

Answer:

30 x < 2 - 38x + 12

Step-by-step explanation:

1- Multiply

2- Calculate

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3- Collect like terms

6 0

2 years ago

There are two mystery numbers the sum of eight times the first number and 10 times the second number is 24. The sum of seven tim

bonufazy [111]

Answer:

x = the first mystery number = 2

y = the second mystery number = 0.8

Step-by-step explanation:

Let

x = the first mystery number

y = the second mystery number

8*x + 10*y = 24

8x + 10y = 24

7*x + 10*y = 26

7x + 10y = 26

8x + 10y = 24 (1)

7x + 10y = 26 (2)

Subtract (1) from (2) to eliminate y

8x - 7x = 26 - 24

x = 2

Substitute x = 2 into (1)

8x + 10y = 24 (1)

8(2) + 10y = 24

16 + 10y = 24

10y = 24 - 16

10y = 8

y = 8/10

y = 0.8

x = the first mystery number = 2

y = the second mystery number = 0.8

8 0

2 years ago

Will give brainliest

serious [3.7K]

Answer:

[2(x+10)]°+(3x-30)°=180°[vertically opposite angle]

2x+20+3x-30=180°

5x-10=180°

5x=180-10

5x=170

x=170/5

x=34

6 0

2 years ago