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babymother [125]
2 years ago
13

PLEASE HELP ASAP GEOMETRY 20 PTS REAL ANSWERS ONLY

Mathematics
1 answer:
kodGreya [7K]2 years ago
7 0

Answer:

Step-by-step explanation:

Use the Law of Cosines to find the measure of angle A from the lengths of the sides.

A = arccos[(b²+c²-a²)/(2bc)] ≅ 29.9°

B = arccos[(a²+c²-b²)/(2ac)] ≅ 54.8°

C = 180 - A - B = 95.3°

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The sum of the areas of the two circles is 80 pi square meters. Find the length of a radius of each circle of one of them is twi
nikklg [1K]
The radius of both circles are 4m and 8m.
7 0
3 years ago
Whats the answer to this ?
8090 [49]

Answer: 312 ft^{2}

Step-by-step explanation:

Area of Rectangle = bh = 16 ft x 18 ft  = 288 ft^{2}

Area of Triangle = 1/2 bh = 1/2 x (16-12) ft x (6) ft x 2 (There's 2 triangles) = 24 ft^{2}

24 ft^2 + 288 ft^2 = 312 ft^2

8 0
2 years ago
I need help someone please
Anna71 [15]

Answer:

10th step is 2+2+2+2+2+2+2+2+2+2

Step-by-step explanation:

i notice that its taking the adding step and shortining it down by multiplying

5 0
2 years ago
A chef cooked 7 kilograms of food for dinner. He ate 11/12 of the amount, how much did he eat?
Bogdan [553]

11/12 of 7 is simply their product.


\bf 7\cdot \cfrac{11}{12}\implies \cfrac{77}{12}\implies 6\frac{5}{12}

5 0
3 years ago
Which of the following is the solution to the system of linear equations<br> x=2y + 5 x/3-y=4/3
Alex73 [517]

Answer:

(7, 1)

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define systems</u>

x = 2y + 5

x/3 - y = 4/3

<u>Step 2: Solve for </u><em><u>y</u></em>

  1. Substitute:                              (2y + 5)/3 - y = 4/3
  2. Multiply 3 on both sides:       2y + 5 - 3y = 4
  3. Combine like terms:               -y + 5 = 4
  4. Isolate <em>y</em> term:                         -y = -1
  5. Isolate <em>y</em>:                                  y = 1

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Define:                    x = 2y + 5
  2. Substitute:              x = 2(1) + 5
  3. Multiply:                  x = 2 + 5
  4. Add:                        x = 7

And we have our final answer!

3 0
2 years ago
Read 2 more answers
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