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Alla [95]
3 years ago
5

Which expression is equivalent?

Mathematics
1 answer:
arlik [135]3 years ago
4 0

Answer:

The first one 3^7 *1/3-4

Step-by-step explanation:

You might be interested in
-25+t=-44 solve using addition principle. The solution is t=
love history [14]

Explanation:

First, add by 25 both sides of an equation.

-25+t+25=-44+25

Then, simplify by equation and add/subtract by the numbers.

44-25=19

*The answer must be have a negative sign.

\boxed{t=-19}

Hope this helps!

Thank you!

Have a great day!

3 0
3 years ago
Read 2 more answers
I really need help with this
photoshop1234 [79]

Answer:

A+6+A = 20

A = 7

Step-by-step explanation:

J = number of problems Juana completed

A = number of problems Andy completed

J+A=20

J = A + 6

Replace J with A+6 in the first equation

A+6+A = 20

2A +6 = 20

Subtract 6 from each side

2A +6-6 = 20-6

2A =14

Divide by 2

2A/2 = 14/2

A = 7

5 0
2 years ago
Read 2 more answers
3 times a number is 54 less than the square of that number. Find the negative solution.
son4ous [18]

Answer:

-6

Step-by-step explanation:

3n = n² - 54

n² - 3n - 54 = 0

n² - 9n + 6n - 54 = 0

n(n - 9) + 6(n - 9) = 0

(n - 9)(n + 6) = 0

n = 9 , -6

5 0
3 years ago
Need help with this math question!!!!!!!!!
exis [7]

ANSWER

The vertex is (1,-3)

EXPLANATION

The given parabola has equation:

{y}^{2}  + 6y + 8x + 1 = 0

We group the variables to obtain:

{y}^{2}  + 6y  =  -  8x -  1

We complete the square to get,

{y}^{2}  + 6y  +  {3}^{2}  =  -  8x -  1 +  {3}^{2}

{(y+ 3)}^{2}  =  -  8x +8

{(y+ 3)}^{2}  =  -  8(x  -1)

The vertex is of the parabola is (1,-3)

7 0
3 years ago
Read 2 more answers
Item 18 you and your friend are selling tickets to a charity event. you sell 7 adult tickets and 16 student tickets for $120. yo
quester [9]

Answer:

  $4

Step-by-step explanation:

The two purchases can be written in terms of the cost of an adult ticket (a) and the cost of a student ticket (s):

  7a +16s = 120 . . . . . . . . price for the first purchase

  13a +9s = 140 . . . . . . . . price for the second purchase

Using Cramer's rule, the value of s can be found as ...

  s = (120·13 -140·7)/(16·13 -9·7) = 580/145 = 4

The cost of a student ticket is $4.

_____

<em>Comment on Cramer's Rule</em>

Cramer's rule is particularly useful for systems that don't have "nice" numbers that would make substitution or elimination easy methods to use. If you locate the numbers in the equation, you can see the X-patterns that are used to compute the numerator and denominator differences.

The value of a is (16·140 -9·120)/(same denominator) = 1160/145 = 8. I wanted to show you these numbers so you could see the numerator X-pattern for the first variable.

__

Of course, graphical methods can be quick and easy, too.

8 0
3 years ago
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