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MissTica
3 years ago
7

4(x+x+7)-2x+7-4 by substituting x=1 and x=2

Mathematics
2 answers:
9966 [12]3 years ago
8 0
4(x+x+7)-2x+7-4
Substitute x with 1
4(1+1+7)-2(1)+7-4
=4(2+7)-2+7-4
=4(9)-2+7-4
=36-2+7-4
=34+7-4
=41-7
=34

4(x+x+7)-2x+7-4
Substitute x with 2
4(2+2+7)-2(2)+7-4
=4(4+7)-4+7-4
=4(11)-4+7-4
=44-4+7-4
=40+7-4
=47-4
=43. Hope it help!
yuradex [85]3 years ago
5 0
4(x+x+7) x=1
4(1+1+7)
4+4+28 = 36

(-2x+7-4) x=2
-2(2)+7-4
-4+7-4 = -1

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nalin [4]
Y intercept is (0,1)
horizontal asymptote

8 0
3 years ago
Y= -2x,1 - 7<br> y=x^2+ 4x- 2
m_a_m_a [10]

Answer:

if you need to find solutions ghraficaly

Step-by-step explanation:

y=y

-2x,1-7=x^2+4x-2

7 0
3 years ago
Hey you ‼️ yeah I unfortunately need your help again these are hard:(
Helga [31]

Answer:

Step-by-step explanation:

The point of this question is to find out the point where two lines intersect. First we need to get the equation of those lines

Slope of line 1:

(Yb -Ya)/(Xb - Xa) =

(-10 - (-14))/(-1 - (-3)) =

4/2 =

2

Use that slope to find the Y-intercept of line 1

y = 2x + b

-14 = 2(-3) +b

-14 = -6 + b

-8 = b

Therefore Line 1 is:

y = 2x - 8

Slope of line 2

(11 - 13)/(-1 - (-3)) =

-2/2 =

-1

Y-intercept of line 2

y = -x + b

13 = -(-3) +b

13 = 3 + b

10 = b

Therefore line 2 is

y = -x + 10

Now we have 2 equations to solve for the coordinates x and y

y = 2x - 8

y = -x + 10

Substitute y out in one of the equations

2x - 8 = -x + 10

3x = 18

x = 6

Plug x into one of the equations

y = 2(6) - 8

y = 12 - 8

y = 4

Therefore the solution is:

x=6, y=4

8 0
3 years ago
Read 2 more answers
The expression 3x^3-5x^2+3x-1 has ___ terms and a constant of ____.
Andrews [41]
<span>The expression 3x^3-5x^2+3x-1 has ___ terms and a constant of ____.
have four terms and 1 constant
</span>
5 0
3 years ago
A computer store has certain software on sale at 3 for $20.00, with a limit of 3 at the sale price. Additional
alexgriva [62]

Answer:

a) y = 9.95(x-3) + 20.00

b) Cost of 5 software packages = $39.90

Step-by-step explanation:

Given that:

Cost of 3 software at sale = $20

Cost of regular = $9.95

Let,

x be the number of software purchased.

We will subtract 3 from x because they cost $20.

y be the total cost.

y = 9.95(x-3)+ 20.00

Putting x=5 in expression

y = 9.95(5-3) + 20.00

y = 2(9.95) + 20.00

y = 19.90 + 20.00

y = $39.90

Hence,

a) y = 9.95(x-3) + 20.00

b) Cost of 5 software packages = $39.90

7 0
3 years ago
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