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Sloan [31]
4 years ago
12

Solve the equation by taking square roots. Problem: 8b^2-7=-76

Mathematics
1 answer:
yulyashka [42]4 years ago
6 0

Answer:

b = +5

Step-by-step explanation:

8b^2=193+7

8b^2=200

b^2= 200/8

b^2=25

b=√25

b=+5

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Use a net to find the surface area of the right triangular prism shown below:
stiv31 [10]

Answer:

216

Step-by-step explanation:

8 0
3 years ago
-7x+2y=18;6x+6y=0 in elimination form
AlexFokin [52]

Step-by-step explanation:

-7x + 2y = 18

6x + 6y = 0

21x - 6y = - 54

6x + 6y = 0

27x = -54

x = -2

6(-2) + 6y = 0

-12 + 6y = 0

6y = 12

y = 2

(-2,2)

4 0
3 years ago
A ladder leans against a window in a two-story building. the window is 16 feet off the ground. the base of the ladder is 12 feet
Kitty [74]
A^2 + b^2 = c^2
16^2 + 12^2 = c^2
256 + 144 = c^2
400 = c^2
sqrt 400 = c
20 = c <== the ladder is 20 ft long
6 0
3 years ago
Divide 540 in ratio 2:1
natka813 [3]

Answer:

180:360

Step-by-step explanation:

so its basically saying make it 1/3 and 2/3 so start with dividing it by 3 to get 180 thats your first answer for 1/3 to get 2/3 simply double that and you have 360 so the answer is 180:360

6 0
3 years ago
Please help I'll give 100 points to whoever is correct
levacccp [35]

Answer:

110.5 yd²

Step-by-step explanation:

Separate the figure into 1 triangle and 3 rectangles.

(see attached image)

<u>Area 1</u>

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

                             = 1/2 × (7 + 2 + 2) × 7

                             = 1/2 × 11 × 7

                             = 38.5 yd²

<u>Area 2</u>

Area of a rectangle = width × length

                                 = 3 × (5 + 2 + 2)

                                 = 3 × 9

                                 = 27  yd²

<u>Area 3</u>

Area of a rectangle = width × length

                                 = 5 × (5 + 2)

                                 = 5 × 7

                                 = 35  yd²

<u>Area 4</u>

Area of a rectangle = width × length

                                 = 2 × 5

                                 = 10  yd²

<u>Total Area</u>

Area 1 + Area 2 + Area 3 + Area 2 = 38.5 + 27 + 35 + 10

                                                        = 110.5 yd²

3 0
2 years ago
Read 2 more answers
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