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Digiron [165]
3 years ago
6

What is the value of x when 3^x=7?

Mathematics
1 answer:
marissa [1.9K]3 years ago
4 0

Answer:

x =

ln ( 7 )

_____

ln ( 3)

Decimal Form: x = 1.77124374

Step-by-step explanation:

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11 less than a number is more than seventeen
Tasya [4]
17∠x-11 set up the equation like this
28∠x      add 17 to the other side, and you get x is greater than 28
3 0
3 years ago
Two families went to the event. The first family bought two children's tickets and one adult ticket and paid a total of 8.2 euro
blagie [28]

Answer:

Step-by-step explanation:

step a system of two equations         c = child ticket     a = adult ticket

eq 1)  2c + 1a = 8.2            multiply by 2

eq 2) 3c + 2a = 14.1

I will multiply eq 1 times TWO and subtract eq 2 from eq 1a)

         eq 1a)  4c + 2a = 16.4

          eq 2)  3c + 2a = 14.1

subtract  (4c - 3c) + (2a -2a)  = 16.4 - 14.1  

                    c      +       0       =   2.3 euros     for one child ticket

Now find the adult ticket price,  plug 2.3 for c into eq 1)

     eq 1)  2c + 1a = 8.2

     eq 1)  2(2.3) + 1a = 8.2         solve for a

                 4.6  + a   =  8.2         substract 4.6 from both sides

                             a =  8.2 - 4.6

                               =   3.6 euros    for one adult ticket

double check using eq 2)    we know c and a values

    eq 2)  3c + 2a = 14.1

    eq 2)  3(2.3) + 2(3.6) = 14.1

                   6.9 + 7.2    =  14.1

                          14.1    =  14.1

5 0
3 years ago
What is the equation of a circle with center (-4,7) radius 3?
miv72 [106K]

Answer:

a. (x + 4)² + (y – 7)² = 3²

Step-by-step explanation:

General equation for a circle is:

(x – h)² + (y – k)² = r²

h and k are the center (h, k), and r is the radius.

They want a center of (-4, 7) so h=-4 and k=7

They want a radius of 3 so r=3

plug it into the equation.

(x – h)² + (y – k)² = r²

(x – (-4))² + (y – (7))² = (3)²

(x + 4)² + (y – 7)² = 3²

7 0
3 years ago
Read 2 more answers
Y = -6x<br> y = -8x + 6<br> ?????
iren [92.7K]

Answer:

x=3

Step-by-step explanation:

-6x=-8x+6

+8 +8

2x=6

2/2 6/2

x=3

6 0
2 years ago
Sulin cuts a ribbon into two pieces in the ratio 5 : 3. The shorter piece is 42 cm long. What is the length of the original ribb
blagie [28]
You divide 42 by 3 then multiply what you get times 5. it should equal 60 cm
8 0
2 years ago
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