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oee [108]
3 years ago
7

Given ΔABC, m∠A = 50°, m∠B = 60°, and a = 7. Find c.

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
3 0

Answer:

D) 8.6

Step-by-step explanation:

The Law of Sines tells you ...

c/sin(C) = a/sin(A)

The sum of angles in a triangle tells you ...

C = 180° -A -B = 180° -50° -60° = 70°

Then ...

c = a·sin(C)/sin(A) = 7·sin(70°)/sin(50°) ≈ 8.6 . . . . . above equation multiplied by sin(C)

_____

There are apps available for phone or tablet for solving triangles. Many graphing calculators have functions that will do the same. Also, there are on-line triangle solvers that will give you the answer.

We include the working here because you're supposed to know how to work the problem. If all you want is the answer, that can be found faster a number of different ways.

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Solve 2(x + 5) + 4(x - 9) = -14.<br> show each step of your work.
DENIUS [597]

Answer:

x=2

Step-by-step explanation:

Distribute

2x+10+4x-36=-14

Simplify

6x-26=-14

6x=12

Divide by 6

x=2

3 0
3 years ago
Read 2 more answers
707.04 in expanded form
Oxana [17]
700 + 7 + .04 I hope this helps. :)
7 0
3 years ago
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Can someone tell me the answer to me pls I have to be done in 20 minutes ​
Feliz [49]

Answer:

x = 9.25

Step-by-step explanation:

It is given that ABC is an isosceles triangle.

m∠A = 43° and m∠C = (6x+13)°

We need to find the value of x.

The sum of a triangle is equal to 180°.

∠A is the vertex angle. For a triangle sum of angle of triangle is equal to 180°

∠A+∠B +∠C=180

43+∠B+(6x+13)°=180

6x+∠B+56=180

6x+∠B = 124

∠B =124-6x

For an isosceles triangle,

∠B = ∠C

124-6x = (6x+13)

124-13 = 6x+6x

111 = 12x

x = 9.25

So, the value of x is 9.25.

7 0
3 years ago
At the store, Jason find the volume of a soda pack is 423.9 in.³. If each cylinder shaped can has a height of 6 inches and a dia
Marina86 [1]

Answer : The correct option is, (A) 10

Step-by-step explanation :

First we have to calculate the volume of cylinder shaped can.

Formula used:

Volume of cylinder = π r² h

where,

r = radius of cylinder

h = height of cylinder

Given:

Diameter of cylinder = 3 in

Height of cylinder = 6 in

Radius of cylinder = \frac{Diameter}{2}=\frac{3in}{2}=1.5in

Now putting all the given values in the above formula.

Volume of cylinder = π r² h

Volume of cylinder = 3.14 × (1.5 in)² × 6 in

Volume of cylinder = 42.39 in³

Now we have to determine the number of soda cans are in a pack.

Number of soda cans are in a pack = \frac{\text{Volume of soda pack}}{\text{Volume of cylinder shaped can}}

Number of soda cans are in a pack = \frac{423.9in^3}{42.39in^3}

Number of soda cans are in a pack = 10

Therefore, the number of soda cans in a pack are 10.

8 0
4 years ago
Square pyramid surface area?
ch4aika [34]

Answer:

576 cm^2

Step-by-step explanation:

16^2 + 2 x 16 x 10

  256 + 32 x 10

    256 + 320

       = 576

4 0
2 years ago
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