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3 years ago

WILL GIVE BRAINLIEST!!!

Mathematics

1 answer:

LUCKY_DIMON [66]3 years ago

4 0

Answer:

A = 119 units²

Step-by-step explanation:

side of square is (12√2)sin45 = 12

The portion of the diagonal that is NOT octagon is

12√2 - 12

There are four corner triangles. The sum of their areas is

(12√2 - 12)²

Area of the octagon is area of the square minus four corner triangle areas.

A = 12² - (12√2 - 12)²

A = 119.2935...

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Find the value of Y! please help

Maurinko [17]

Answer:

y = 5.6

Step-by-step explanation:

Use Sine

Sine = $\frac{opposite}{hypothenuse}$

Sine 45 = $\frac{y}{18}$

Sine of 18 is 0.309

0.309 = $\frac{y}{18}$

Multiply 18 on both sides

0.309 x 18 = $\frac{y}{18}$ x 18

5.562 = y

Round to the nearest tenth:

5.562 = 5.6

3 0

3 years ago

HELP ME PLEASEEEEEEEEEE

Alex_Xolod [135]

Answer: The total amount the water change was -28 gallons by the end of the week OR The total amount the water changed decreased 28 gallons by the end of the week. Depending on how you want to word it.

Hope this helps!

Step-by-step explanation:

Create you equation:

x = the total amount the water changed

d = the amount of days

x = -4d

Insert the known information into the equation and solve:

x = -4d

x = -4(7)

x = -28

4 0

2 years ago

Martha Washington walks 30 minutes each day. If she walks for 140 days, how many hours will she walk?

telo118 [61]

make 30 minutes into an hour then divide 140 by 2

140/2=70

70x1=70

5 0

2 years ago

Michaels account overdrafts $75.00. write an absolute value to represent the overdraft

Klio2033 [76]

Overdrafting is when you deposit you're money in a bank account so it could either be +75 or -75 both of them might be correct.

8 0

3 years ago

Complete the open array model to find 1,950 ÷ 6.

gizmo_the_mogwai [7]

Answer:

The answer is 325

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers