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-Dominant- [34]
3 years ago
5

What is the value of x in the equation 8+4 = 2(x-1)? 0511/213/27​

Mathematics
1 answer:
valkas [14]3 years ago
3 0

Answer:

7

Step-by-step explanation:

8+4=2(x-1)

12=2(x-1)

x-1 = 12/2

x-1 = 6

x = 6+1 = 7

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Graph of y=(x-3)(x+4)
tekilochka [14]

Answer:

For graph refer to attachment .

Step-by-step explanation:

We need to plot the graph of a given function . The given function is ,

\rm\implies y = ( x - 3)(x+4)

When we will simplify the RHS term we will get ,

\rm\implies y = x( x + 4 ) -3(x + 4 )

Simpify the brackets ,

\rm\implies y = x^2 + 4x -3x -12

Add like terms , we have ,

\rm\implies \boxed{\blue{\rm y = x^2+x -12}}

<u>From </u><u>the</u><u> </u><u>equation</u><u> </u><u>:</u><u>-</u><u> </u>

  • The graph will cut x axis at 3 and -4 as x = 3 and -4 are the roots of the equation .
  • The graph will cut y axis at (0,-12)
  • The vertex of the graph will be (-0.5,-12.5)

<u>For the graph refer to attachment .</u>

5 0
3 years ago
Your piggy bank is filled with nickels and dimes. When you turn the change in you end up having 595 cents. Write a equation and
klemol [59]
5n+10d=595
n=nickels, d=dimes
101 nickels, 9 dimes
99 nickels, 10 dimes
117 nickels, 1 dime
4 0
3 years ago
Adult tickets to the fall play cost $8 and student tickets cost $4 . The drama class sold 30 more adult tickets than student tic
blagie [28]

Answer:

60 adult tickets were bought.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Theodore needs to mix a 30% alcohol solution with a 50% alcohol solution to create 100 milliliters of a 32% solution. How many m
Goryan [66]

Answer:

50 % alcohol solution = 10 millimetres

30 % alcohol solution = 90 millimetres

Step-by-step explanation:

two equations can be derived from this question

x + y = 100 equation 1

0.3x + 0.5y = 100 x 0.32 = 32

0.3x + 0.5y = 32 equation 2

where :

x = 30% alcohol solution

y = 50% alcohol solution

multiply equation 1 by 0.3

0.3x + 0.3y = 30 equation 3

subtract equation 3 from 2

0.2y = 2

y = 10

substitute for y in equation 1

x + 10 = 100

x = 100 - 10

x = 90

5 0
3 years ago
Put these numbers in order from greatest to least.<br><br> 0.07,3/5, and 5/8
Blababa [14]

Answer:

From greatest to least: 5/8, 3/5, 0.07

Step-by-step explanation:

5/8 = 0.625

3/5 = 0.6

0.07 = 0.07

5 0
3 years ago
Read 2 more answers
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