Help me plz I'm doing a test and I need help lol

Mathematics

1 answer:

My name is Ann [436]2 years ago

6 0

Answer:

BC = BA

Step-by-step explanation:

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The four points (−2, 5), (−2, −1), (6, −1), and (3, 5) are the vertices of a polygon. What is the area, in square units, of this

crimeas [40]

Look at the picture.

The polygon is a right-angled trapezoid.

The area is:
$A=\frac{a+b}{2} \times h$

The points (-2,-1) and (6,-1) lie on the same horizontal line, so the distance between them is 6-(-2)=6+2=8. The length of a is 8 units.
The points (-2,5) and (3,5) lie on the same horizontal line, so the distance between them is 3-(-2)=3+2=5. The length of b is 5 units.
The points (-2,5) and (-2,-1) lie on the same vertical line, so the distance between them is 5-(-1)=5+1=6. The length of h is 6 units.

$A=\frac{8+5}{2} \times 6=\frac{13}{2} \times 6=13 \times 3=39$

The area is 39 square units.

5 0

2 years ago

Read 2 more answers

Mike is building storage boxes. Each box will have a length of 5 feet, a width of 412 feet, and a height of 312 feet. A pint of

alex41 [277]

The pints of paint that Mike needs to buy in order to paint 4 boxes is 9 pints.

How many pints is needed?

The first step is determine the total surface area of a box.

Total surface area of a cuboid = 2 (lw + wh + lh)

where:
l = length
w = width
h = height

2 x[ (5 x 9/2) + (9/2 x 7/2) + (5 x 7/2) ]
2 x ( 45/2 + 63/4 + 35/2) = 111.5ft

The second step is to determine the total surface area of 4 boxes:

111.5 x 4 = 446

Now, divide 446 by 50

446 / 50 = 9 pints

8 0

1 year ago

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The blue string is 0.98 meters long. The

Yuliya22 [10]

Answer:

22 centimeters

Step-by-step explanation:

1. See how many centimeters are in a meter:

There is 100 centimeters in one meter

2. Multiply each number by 100 to convert the meters to centimeters 

0.98 x 100= 98