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Ira Lisetskai [31]
3 years ago
9

A triangle has one side that measures x, and the other two sides each measure 4 inches less than x. The perimeter is 19 inches.

Mathematics
1 answer:
zalisa [80]3 years ago
6 0
Perimeter of a triangle = all 3 sides added together

x + (x - 4) + (x - 4) = 19
3x - 8 = 19
3x = 19 + 8
3x = 27
x = 27/3
x = 9 <==
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Let f(x) = 3x2 + x − 3 and g(x) = x2 − 5x + 1. Find f(x) − g(x).
scZoUnD [109]
<h3>Answer:   2x^2 + 6x - 4</h3>

=================================

Work Shown:

f(x) - g(x) = [ f(x) ] - [ g(x) ]

f(x) - g(x) = ( 3x^2+x-3) - ( x^2-5x+1 )

f(x) - g(x) = 3x^2+x-3 - x^2+5x-1

f(x) - g(x) = (3x^2-x^2) + (x+5x) + (-3-1)

f(x) - g(x) = 2x^2 + 6x - 4

5 0
3 years ago
If a=2, b= -1, c= -3 and d= -2 find :<br> 1/2bc-6ac+2ab<br> 1/4(ac)² +1/6ac
Arisa [49]

Answer:

34

8

Step-by-step explanation:

<u>1/2bc - 6ac + 2ab</u>

(1/2)(-1)(-3) - (6)(2)(-3) + (2)(2)(-1)

(1/2)(4) - (-36) + (-4)

2 + 36 - 4

34

<u>1/4(ac)² + 1/6ac</u>

(1/4)[(2)(-3)]² + (1/6)(2)(-3)

(1/4)(-6)² + (1/6)(-6)

(1/4)(36) + (-1)

9 - 1

8

7 0
3 years ago
Write two expressions where the solution is 28
konstantin123 [22]
10+18=28
17+11=28

OR

2x=28 where x=14
4x where x=7
8 0
3 years ago
Write the slope-intercept form of the equation for the line.
zavuch27 [327]
y=5/8x+1/2 is the answer


3 0
3 years ago
Read 2 more answers
If Levi purchased a total of 50 ride tickets and game tickets at the amusement park and spent $29. If right tickets cost $.75 ea
erica [24]

Answer: he purchased 16 ride tickets.

Step-by-step explanation:

Let x represent the number of ride tickets that he purchased.

Let y represent the number of game tickets that he purchased.

Levi purchased a total of 50 ride tickets and game tickets at the amusement park. It means that

x + y = 50

If ride tickets cost $.75 each and game tickets cost $.50 each and the total amount spent on the tickets is $29, it means that

0.75x + 0.5y = 29- - - - - - - - - - - -1

Substituting x = 50 - y into equation 1, it becomes

0.75(50 - y) + 0.5y = 29

37.5 - 0.75y + 0.5y = 29

- 0.75y + 0.5y = 29 - 37.5

- 0.25y = - 8.5

y = - 8.5/-0.25

y = 34

x = 50 - y = 50 - 34

x = 16

5 0
3 years ago
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