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Travka [436]
4 years ago
6

Check each equation whose graph is the line that contains the points (4, –7) and (1, 5). y = –4x + 9 y = –4x – 23 y – 1 = –4(x –

5) y + 7 = –4(x – 4) 4x + y = 9
Mathematics
1 answer:
Delvig [45]4 years ago
6 0

Answer:

y = –4x + 9

y + 7 = –4(x – 4)

4x + y = 9

Step-by-step explanation:

edgenuity answers. :)

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Step-by-step explanation:

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4 0
3 years ago
Question 1
allochka39001 [22]

Answer:

Step-by-step explanation:

Perimeter of quarter circle = r + r + \frac{1}{4}*2*\pi *r

            = 10 + 10 + \frac{1}{4}*2*3.14*10\\\\= 10 + 10 +  3.14*5\\\\\\= 10 + 10 + 15.70\\\\= 35.70 cm

2) d = 2*10 = 20 cm

Perimeter of semicircle = diameter + (1/2) * circumference of circle

                         = 20 +  \frac{1}{2}* 2*\pi *r\\\\= 20 + \frac{1}{2}*2*3.14*10\\\\= 20 + 3.14*10\\\\= 20 + 31.4\\\\= 51.40 cm

3) Perimeter of three-quarter =  r + r + (3/4)* circumference of circle

          = 10 + 10 + \frac{3}{4}*2*\pi *r\\\\= 10 + 10 + \frac{3}{4} * 2 * 3.14 * 10\\\\= 10 + 10 + 3 * 3.14 * 5\\\\= 10 + 10 + 47.1\\\\= 67.1 cm

5 0
3 years ago
1. Find the area of the polygon
zhannawk [14.2K]

Answer:

1. A = 40 units²

2. A = 72 units²

3. B) 45

Step-by-step explanation:

1.  This shape comprises 4 congruent triangles with base of 5 units and height of 5 units.

Area of a triangle = 1/2 x base x height

Therefore, area of polygon = 4(1/2 x 5 x 4)

                                             = 40 units²

2.  This shape comprises two pairs of congruent triangles.

Area of a triangle = 1/2 x base x height

Therefore, area of polygon = 2(1/2 x 2 x 6) + 2(1/2 x 10 x 6)

                                             = 72 units²

3.  Count the number of shaded squares:

9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 45 units²

7 0
2 years ago
A factory can make 300 dozen doughnuts an hour. What is the unit rate in doughnuts per minute?
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Answer:

60 doughnut per mintute

Step-by-step explanation:

7 0
3 years ago
Simplify the following polynomial expression.<br><br> (5x-7)(9x^​2-4x-8)
mihalych1998 [28]

Your answer will be 70x^2 -138x+56

3 0
3 years ago
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