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astra-53 [7]
2 years ago
9

Use compatible numbers to complete the problem. Then estimate the difference 57-21

Mathematics
1 answer:
MArishka [77]2 years ago
5 0
36??? hope this helps
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Let A= (−1,4), B= (3,−4), and C= (2,7). Let p be the line parallel to AB that goes through point C. Let r be the line perpendicu
dalvyx [7]
A is the correct answer
7 0
2 years ago
Item 1 Solve the system of linear equations by graphing. 5x+5y=15 2x−2y=10
Marysya12 [62]

After graphing both lines, we're able to tell the solution by looking at the point where the lines cross. In this case, it's at (4, -1). And so that is the solution set.

6 0
3 years ago
Find the areas of the trapezoids
Gennadij [26K]

Answer:

figure 1 - 10.5 unit^2

figure 2 - 12 unit^2

Step-by-step explanation:

<u>figure 1</u>

1. find the area of the rectangle

<em>3*2 = 6 unit^2</em>

2. find the area of the triangle

<em>(3*3)/2 = 4.5 unit^2</em>

3. add the area of the rectangle and the area of the triangle together. The sum would be the area of the trapezoid.

<em>6 + 4.5 = </em><u><em>10.5 unit^2</em></u>

<u>figure 2</u>

1. find the area of the rectangle

<em>2*4 = 8 unit^2</em>

2. find the area of both triangles

<em>(1*4)/2 = 2 unit^2</em>

3. add the area of the rectangle and the area of both triangles together. The sum would be the area of the trapezoid.

<em>8 + 2 + 2 = </em><u><em>12 unit^2</em></u>

4 0
2 years ago
A regular heptagon has a side length of 13.9 and an apothem of 14.4. Find the area of the regular heptagon. Round your answer to
ivann1987 [24]

Answer: 701

Step-by-step explanation:

A heptagon has 7 sides, therfore a regular heptagon will have 7 equal sides

n = 7 (number of sides)

s = 13.9 (length of each sides of the heptagon)

r = 14.4 (The apothem)

The area of the regular heptagon can be calculated by:

Area = ½ n × s × r

Area = ½ × 7 × 13.9 × 14.4

Area = 700.56 square units

To the nearest whole number, will be:

Area = 701 square units

4 0
3 years ago
A package of nine pens cost 3.60 how much is one pen
irinina [24]

Answer:

Step-by-step explanation:

40 cents

7 0
2 years ago
Read 2 more answers
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