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noname [10]
2 years ago
15

Pls help me Find the value of x.

Mathematics
1 answer:
sasho [114]2 years ago
8 0

Answer:

x = 48°

Step-by-step explanation:

the sum of all angles must be 180°

180 - 69 - 63 = 48

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(7a^3 -2a-2)+(-5a+3)
atroni [7]

Answer:

7a  3  −7a+1

Step-by-step explanation: I hope this help.

STEP

1

:

Equation at the end of step 1

 ((7a3 -  2a) -  2) +  (3 - 5a)

STEP

2

:

Polynomial Roots Calculator :

2.1    Find roots (zeroes) of :       F(a) = 7a3-7a+1

Polynomial Roots Calculator is a set of methods aimed at finding values of  a  for which   F(a)=0  

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers  a  which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number  P/Q   then  P  is a factor of the Trailing Constant and  Q  is a factor of the Leading Coefficient

In this case, the Leading Coefficient is  7  and the Trailing Constant is  1.

The factor(s) are:

of the Leading Coefficient :  1,7

of the Trailing Constant :  1

Let us test ....

  P    Q    P/Q    F(P/Q)     Divisor

     -1       1        -1.00        1.00      

     -1       7        -0.14        1.98      

     1       1        1.00        1.00      

     1       7        0.14        0.02      

Polynomial Roots Calculator found no rational roots

Final result :

 7a3 - 7a + 1

6 0
2 years ago
Read 2 more answers
The perimeter of a triangle is 28 feet. One side of the triangle is 5 feet longer than the second side. The third side is 8 feet
Hitman42 [59]

side one is 5 side two is 10 and the third side is 13. 28 is not divisible by three so if one side i 5 ft longer and another side is 8 ft longer then you add them 5+8=13 then subtract 13 from the perimeter 28-13=15 then divide 15 by 3 and get 5 5 5. add 5 (5+5) (5+8).

7 0
3 years ago
Linda received 4/5 of the votes in the votes in the election for student council president.what percent of votes did Linda recei
Mariana [72]

Answer:

80% 0.8

Step-by-step explanation:

To find the percentage out of a fraction you would divide 4÷5 to get 0.8, the decimal answer, then to turn that to a percent you would move the point two places to the right to get 80%.

6 0
3 years ago
What is the value of \dfrac{x^2}{y^4}
Nimfa-mama [501]

Answer:

4

Step-by-step explanation:

x^2/ y^4

Let x=8 and y=2

8^2 / 2^4

PEMDAS says powers first

64 / 16

Divide next

4

3 0
3 years ago
Read 2 more answers
Help me please !!!! I need to make sure I am correct with my thinking
Lana71 [14]
1.  Use the Pythagoras theorem
13^2 = x^2 + 5^2
solve for x and youll get the height of the roof.

2.  let x = length of the rpoe)-

x^2 = 9^2 + 12^2

3. Pythagoras again 
20^2 = x^2 + 12^2
7 0
3 years ago
Read 2 more answers
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