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Anni [7]
3 years ago
6

What is the value of X please help

Mathematics
2 answers:
Nina [5.8K]3 years ago
5 0

Answer:

x= 20

Step-by-step explanation:

The sum of the angles of a triangle are 180 degrees

x+5  + 7x-5   + x  =180

Combine like terms

9x = 180

Divide by 9

9x/9 = 180/9

x = 20

astraxan [27]3 years ago
5 0
Hope this helps! Feel free to clarify

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What is the domain of y=log6x
elena-14-01-66 [18.8K]

Answer:

i think its c

Step-by-step explanation:


4 0
3 years ago
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How can i get better at maths
ivann1987 [24]

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8 0
3 years ago
A taxi driver had 27 fares to and from the airport last Monday. The price for a ride to the airport is $14, and the price for a
OLga [1]

Answer:

(15, 12)

Step-by-step explanation:

Let's generate two systems of equations that fit this scenario.

Number of trips to the airport = x

Number of trips from the airport = y

Total number of trips to and from the airport = 27

Thus:

x + y = 27 => equation 1.

Total price for trips to the Airport = 14*x = 14x

Total price of trips from the airport = 7*y = 7y

Total collected for the day = $294

Thus:

14x + 7y = 294 => equation 2.

Multiply equation 1 by 7, and multiply equation 2 by 1 to make both equations equivalent.

7 × x + y = 27

1 × 14x + 7y = 294

Thus:

7x + 7y = 189 => equation 3

14x + 7y = 294 => equation 4

Subtract equation 4 from equation 3

-7x = -105

Divide both sides by -7

x = 15

Substitute x = 15 in equation 1

x + y = 27

15 + y = 27

Subtract both sides by 15

y = 27 - 15

y = 12

The ordered pair would be (15, 12)

7 0
3 years ago
three and four angles below form a triangle which of the angles to do not belong 35 degrees 115 degrees 50 degrees 30 degrees ​
aleksandrvk [35]
50 degrees doesn’t belong because

35 + 115 + 30 = 180 degrees

Hope this helped :)
7 0
3 years ago
What is the solution(s) to the equation 5a2 - 44 = 81?
taurus [48]

Answer:

B

Step-by-step explanation:

5a^2 - 44 = 81                     Add 44 to both sides

5a^2 = 81 + 44                    Collect like terms

5a^2 = 125                          Divide both sides by 5

a^2 = 125/5                  

a^2 = 25                              Take the square root of both sides

√a^2 = √25

a = +5

a = -5

The answer is B

7 0
3 years ago
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