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wlad13 [49]
3 years ago
12

12. DEDUCE The graph of a linear

Mathematics
1 answer:
Marat540 [252]3 years ago
7 0

Answer:

en contexto, ora al de arriba pa que te ayude porque nose nada xd

Step-by-step explanation:

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The difference between the squares of two numbers is 20. three times the square of the first number increased by the square of t
Mashcka [7]
We need a system of equations to solve this.  "Difference" is to subtract, and we are taking this difference of the 2 squared unknowns to be 20.  That equation is x^{2} -y^2=20.  Our "first number is x^2, so 3 times that is 3x^2.  "Increased by" is adding to that first number.  What we are adding is the second number.  The second equation is 3x^2+y^2=124.  Let's solve the first equation for x^2: x^2=y^2+20 and sub that value for x^2 into the second equation.  3(y^2+20)+y^2=124 and 3y^2+60+y^2=124.  Subtract 60 from both sides and combine the y^2 terms to get 4y^2=64.  Divide both sides by 4 to get y^2 = 16 and y = 4.  Let's go back now and solve for x.  We will use the fact that y^2 = 16 to solve for x^2 and then take the square root of it.  x^2-16=20, x^2 = 4, so x = 2.  Your solutions are x = 2 and y = 4.  There you go!
8 0
3 years ago
Please help me on this! Just one problem to help me solve for x.
nikitadnepr [17]

Answer:


Step-by-step explanation:

cross multiply, \frac{4x + 3(x-1)}{12}\\\\

\frac{4x+3x-3}{12}\\  \\

\frac{7x-3}{12} = 2 + x

7x -3 = 12(2+x)\\\\7x - 3 = 24 + 12x\\\\12x - 7x = -3 - 24\\\\5x = -27 \\\\x = \frac{-27}{5} = -5.4

4 0
3 years ago
The inverse of the function
Crazy boy [7]

Answer:

x+15

Step-by-step explanation:

5 0
3 years ago
Im having difficulty with these problems. Can someone please help me out?
OLEGan [10]

Answer:

x=60° or 300°

Step-by-step explanation:

2cosx=1

cosx=1/2

cosx=cos60°,cos(360-60)°

cosx=cos60,cos300

either,

cosx=cos60

x=60

or,

cosx=cos300

x=300

8 0
3 years ago
The graph shows a driver’s distance versus time.
barxatty [35]
They are trying to spen on a long trip
7 0
3 years ago
Read 2 more answers
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