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Fantom [35]
3 years ago
7

Pls help i will give brainiest

Mathematics
2 answers:
slega [8]3 years ago
5 0

Answer:

red

Step-by-step explanation:

Travka [436]3 years ago
4 0

Answer:

red

Step-by-step explanation:

The y-intercept is -2 and the slope is 3/1. so you start on the y-axis at -2 and move up 3 to the right one.

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Ira bought a tennis racquet that cost $112. The sales tax rate is 9 percent. What is the total amount that she paid?
xenn [34]
B. 122.08 
http://www.convertit.com/go/convertit/calculators/finance/sales_tax_calc.asp

8 0
3 years ago
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Solve each system of equations <br> X^2+y^2+18x+29=0<br> X+y=1
tatyana61 [14]

Answer:

two solutions : (-3;4)  and (-5;6)

Step-by-step explanation:

hello :

X²+y²+18x+29=0    ..(1)

X+y=1 ...(2)

by (2) : y = 1 - x

put this value in (1) : x² +(1-x)² +18x+29 = 0

x² +1 +x² -2x+18x +29 =0

2x²+16x +30 = 0

x²+8x+15 =0

delta = b²-4ac     a=1   b=8   c = 15

delta = (8)²-4(1)(15)=64-60 =4 = 2²

X1=(-8+2)/2 = - 3

X2=(-8-2)/2 = - 5

case 1 : x = -3    y = 1 - (-3) = 4

case 2 : x = -5    y = 1 - (-5) = 6

8 0
3 years ago
Select two numbers that make the inequality true. 2x - 3 &gt; 1​
marissa [1.9K]

Answer:

3,4,5,6,..................any number bigger than 3 can be taken as the answer

4 0
3 years ago
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Can you help me with this please.
Nataliya [291]

Answer:

c, i believe!!

Step-by-step explanation:

have a good day! <33

3 0
3 years ago
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What are the coordinates of the vertex for f(x) = 2x2 + 4x + 9?
Vlada [557]
Your equation f(x)=2x^2+4x+9 is in the form y=ax^2+bx+c
The vertex only relies on "a" and "b" though, so that +9 doesn't really matter in this case.  The vertex of a parabola is located where 
x=\frac{-b}{2a}=\frac{-4}{2(2)}=-1
So your x-coordinate is -1.  You need to find f(-1) to find your y-coordinate, and then you list it in the form (-1, y).
5 0
3 years ago
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