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lilavasa [31]
2 years ago
13

50 POINTS. For what value of the variable is the value of the expression is -3(2x+1) is 20 greater than the expression 8x+5? Ple

ase answer correctly, don't show your work, just give the correct answer.
Mathematics
2 answers:
qwelly [4]2 years ago
7 0

Answer:

my x is ;

x= -0.6205

this is because for the first equation to be equal to the second equation we need to multiply the second equation with 20

Ostrovityanka [42]2 years ago
6 0
-6x-3= 8x+25 just solve for x, then you get x=-2.
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What i the constant of proportionality in the equation y - 2.5x?
ELEN [110]
2.5 because if you move x to the other side of the equation you will get y=2.5x, and the constant of proportionality is what x is multiplied by, in this case, it's 2.5.
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3 years ago
Find A, B, and C<br> 7th Grade Math<br> Please help me answer this
xeze [42]

Answer:

A=124 B=60 and C=60

Hope this helps.

3 0
2 years ago
Which equation is the inverse of y=2x^2-8
shusha [124]

Step-by-step explanation:

In order to get the inverse of equation, we will interchange the variables and solve for x and y as follows.

             y = 2x^{2} - 8

whereas,  y + 8 = 2x^{2}

    or              x = \sqrt{\frac{y+8}{2}}

Now, on interchanging the variable we will get the equation as follows.

               x = 2y^{2} - 8

               x + 8 = 2y^{2}

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4 0
3 years ago
Read 2 more answers
Match the three graphs to the function they represent ?
Mama L [17]

Suppose that a>b>1, then

a^x>b^x and \log_ax

Therefore, since 2<3<7, \log_2x>\log_3x>\log_7x.

Choose an arbitrary x>1. You have that a takes the greatest values at x, c takes the smallest value at x. Thus,

a>b>c and

  • a=\log_2x;
  • b=\log_3x;
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Answer: correct option is B.


3 0
2 years ago
My question is in the attachment.<br>​
Nikolay [14]

Answer:

5 and 25

Step-by-step explanation:

let the son's age be x then the father's age is x + 20

In 5 years

son = x + 5 and father = x + 20 + 5 = x + 25

Then

x + 25 = 3(x + 5) ← father is three times as old as son

x + 25 = 3x + 15 ( subtract x from both sides )

25 = 2x + 15 ( subtract 15 from both sides )

10 = 2x ( divide both sides by 2 )

5 = x and x + 20 = 5 + 20 = 25

si=on is 5 and father is 25

8 0
2 years ago
Read 2 more answers
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