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Anna35 [415]
3 years ago
6

Carlos bought 70 feet of rope for $19.60. He needs 30 more feet. If the unit price is the same, how

Mathematics
1 answer:
Maru [420]3 years ago
7 0

Answer:

8.40

Step-by-step explanation:

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F(-9)=7x+6 <br> what would the value of F(-9) be?
shusha [124]
Answer: -57
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4 0
1 year ago
The first three steps in determining the solution set of the system of equations algebraically are shown.
jolli1 [7]
Since both are equivalent to y, the equations must be equivalent.
x^2-x-3= -3x+5
x^2+2x-8=0

(x+4)(x-2)=0
x=-4, x=2

Plug the values of x in to either equation
y=-3(-4)+5
y= 12+5
y=17

y= -3(2)+5
y=-6+5
y=-1

Final answer: (-4,17) and (2,-1)
8 0
3 years ago
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Solve the system of equations.<br><br><br> 2x + 3y = 1<br> y = 3x + 15
MrMuchimi
Since y=3x+15
sub 3x+15 for y in other equation

2x+3(3x+15)=1
2x+9x+45=1
minus 45
11x=-44
divide 11
x=-4

sub
y=3x+15
y=3(-4)+15
y=-12+15
y=3

(-4,3)
6 0
3 years ago
Marcia buys toys for $22.75 on sale. She gives the salesperson two $10 bills and one $5 dollar bill. How much change will Marcia
goldenfox [79]

Answer:

$2.25

Step-by-step explanation:

Marica pays with 2 $10 bills and 1 $5 bill, 10+10+5=25. Since she paid $22.75, her change would be 25-22.75=2.25.

5 0
2 years ago
Which of the equations below represents a line perpendicular to the x-axis?
Allushta [10]

Answer:

Option B

Step-by-step explanation:

we know that

A line perpendicular to the x-axis is a line parallel to the y-axis

so

the equation of the line is of the form x=(+/-)a

The slope of the line is undefined

where

a is a real number

therefore

x=6 is a line perpendicular to the x-axis

5 0
3 years ago
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