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Bess [88]
3 years ago
12

Which equation correctly applies the law of cosines to solve

Mathematics
1 answer:
Rashid [163]3 years ago
7 0

Answer:

D. 82 = 72 + 112 – 2(7)(11)cos(P)

Step-by-step explanation:

If a = 8, then that means A must be P because the angle corresponds with the side. Therefore, D makes sense because 8^2 is the first part of the equation while cos(P) is at the end.

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Se sabe q la suma de tres numeros es de 850. El primer es un tercio del segundo y el tercer número es el doble del segundo.¿Cual
murzikaleks [220]

Answer:

Primer número = x = 85

Segundo número = y = 255

Tercer número = z = 510

Step-by-step explanation:

Se sabe que la suma de tres números es 850. El primero es un tercio del segundo y el tercer número es el doble del segundo.

Representamos:

Primer número = x

Segundo número = y

Tercer número = z

Se sabe que la suma de tres números es 850.

x + y + z = 850 ...... Ecuación 1

El primero es un tercio del segundo

x = 1/3 años

El tercer número es el doble del segundo.

z = 2 años

Sustituimos 1 / 3y por x y 2y por z en la Ecuación 1

1 / 3y + y + 2y = 850

y / 3 + 3y = 850

Multiplica ambos lados por 3

y + 9y = 850 × 3

10 años = 2550

y = 2550/10

y = 255

Resolviendo para x

x = 1/3 años

x = 1/3 × 255

x = 85

z = 2 años

z = 2 × 255

z = 510

Por eso,

Primer número = x = 85

Segundo número = y = 255

Tercer número = z = 510

5 0
3 years ago
Mr. D math
tangare [24]
Answer:
9.1

Explanation:
Use the distance formula
d=sqrt[(x2-x1)^2 + (y2-y1)^2]
d=sqrt[(3-12)^2 + (4-5)^2]
d=sqrt[(-9)^2 + (-1)^2]
d=sqrt[81 + 1]
d=sqrt[82]
d=9.055≈9.1

Where (x1, y1) is (12,5) and (x2, y2) is (3, 4)

7 0
3 years ago
What is the y-intercept of the function f(x)=2/9x+1/3
____ [38]

Answer:

1/3

Step-by-step explanation:

The equation given to you is in y=mx+b form.

m is the slope which in this case would be 2/9.

b is the y-intercept which in this case would be 1/3

6 0
3 years ago
Read 2 more answers
What is the probability of randomly selecting an odd number from the numbers 1 -15?
Scilla [17]

Answer:

7/15

Step-by-step explanation:

So basically, you need to count the numbers (3,5,7,9,11,13,15) those are 7 numbers in total, so that's 7/15, if you want a percentage its 47% (rounded)

7 0
4 years ago
Select the correct solution set 2x-8<7
timama [110]

Answer:

4.  

b

d

7.

the quordinates would be 1, 5

9.

the quordinates would be 23,1  

15.  

c

16.

a

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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