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Zielflug [23.3K]
2 years ago
5

1. If y varies directly as x and y=13 when x=23.4, find y when x=9.

Mathematics
1 answer:
pychu [463]2 years ago
8 0

Answer:

1. y = 5

2. y = 15

Step-by-step explanation:

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The polynomial f(x) is written in factored form:
Valentin [98]

Answer:

F(x)=(x-3)(x+8)(x-11)=0

(x-3)=0, (x+8)=0, (x-11)=0

X=3

X=-8

X=11

6 0
3 years ago
Find the sum of the finite geometric series: 5 + 10 + 20 + ... +81,920.
Anestetic [448]

Answer:

No solution

Step-by-step explanation:

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by  2  gives the next term. In other words,  <em>a n +a1 ⋅ r n -1</em><em> </em>

Geometric Sequence:<em>  </em><em>r = 2</em>

The series given has a value of<em>  </em><em>r  </em>such that <em>r  >  1  or   r  <  −  1.</em> Therefore, the infinite sum cannot be calculated.<em> </em>

<em> </em>

<em> </em>

8 0
3 years ago
3. If triangle ABC has the following measurements, find the measure of angle A.
klio [65]

9514 1404 393

Answer:

  (a)  42.3°

Step-by-step explanation:

Side 'a' is the shortest of three unequal sides, so angle A will be the smallest angle in the triangle. Its measure can be found from the Law of Cosines.

  a² = b² +c² -2bc·cos(A)

  cos(A) = (b² +c² -a²)/(2bc) = (21² +25² -17²)/(2·21·25) = 777/1050

  A = arccos(777/1050) ≈ 42.3°

The measure of angle A is about 42.3°.

_____

<u><em>Additional comment</em></u>

The smallest angle in a triangle can never be greater than 60°. This lets you eliminate choices that exceed that value.

5 0
3 years ago
Write 26% as a decimal.
earnstyle [38]
Move the decimal point 2 to the left

Answer is .26
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3 years ago
Please help with this math question :)
Nikitich [7]
I can't see the math
5 0
3 years ago
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