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serious [3.7K]
3 years ago
14

Question 11 (5 points) Solve 5x + 4y = 9 for y.

Mathematics
1 answer:
Kitty [74]3 years ago
6 0

Answer:

y= (9-5x)/4

Step-by-step explanation:

5x+4y=9

-5x     -5x

4y=9-5x

/4    /4

y= (9-5x)/4

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How can the Fundamental Theorem of Algebra be used to show that any polynomial of odd degree has at least one root?
iragen [17]

Answer:

<h2> I want to prove that every real polynomial of odd degree has at least one real root, using the intermediate value theorem.</h2><h2 /><h2>Let </h2>
6 0
3 years ago
The hypotenuse of a right triangle is 13.0, and one leg is 9.0 units shorter than the other. Find the dimensions of the figure (
Darina [25.2K]
Let, one leg be x units. 
since the other leg is 9.0 units shorter than the other, 
the measure of the other leg =x-9 
hypotenuse =13.0 units 
According to Pythagorean theorem, the square of the hypotenuse is equal to the sum of squares of the other two sides.  
x^2 +(x-9)^2 =13^2 
x^2 + x^2 -18x +81 = 169 
2x^2-18x-88=0 
Divide the whole equation by 2 
x^2 - 9x -44 =0  
Let's use the quadratic formula to find the roots. 
formula: x= [-b ± sqrt(b^2-4*a*c)]/2*a  
a=1 b=-9 c=-44 
x= [9±sqrt(81+176)]/2
 =[9±sqrt(257)]/2
 =[9±16.03]/2
 =25.03/2 or -7.03/2
 length of a triangle cannot be negative,
 Therefore, x=25.03/2 =12.52 
 one leg =12.5 units
 other leg =12.52-9 =3.5 units
4 0
3 years ago
Evaluate the expression when the value of the variable is given. 40 - 8x when x = 2
Ede4ka [16]

Answer:

24

Step-by-step explanation:

To evaluate this, we just need to substitute 2 for whenever we see x.

40 - 8 (2)

From here, we can just use order of operations to simplify it down to a single number.

40 - 16

24

So, when x = 2, we get 24.

4 0
3 years ago
Which of the following is equal to 5^6/5^2?<br><br> 5x5x5<br> 5x5x5x5
lisov135 [29]
I hope this helps you

3 0
3 years ago
Read 2 more answers
Please help me with this sum​
sergey [27]

its upsidedown what are you doing

3 0
3 years ago
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