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madam [21]
3 years ago
14

I WILL GIVE BRAINLIEST!!!!! Find an equation for the line below.

Mathematics
2 answers:
erastovalidia [21]3 years ago
8 0

Answer:

y = 2/3x + 2.5

Step-by-step explanation:

AnnZ [28]3 years ago
7 0
The equation of the line is y=2/3x+2.5
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One antifreeze solution is 20% alcohol. Another antifreeze solution is 12% alcohol. How many liters of each solution should be c
katrin [286]
Use this systems of equations to solve:

x = first antifreeze
y = second antifreeze

\left \{ {{.2x + .12y = .18(15)} \atop {x + y = 15}} \right.

Isolate y.

x + y = 15
Subtract x from both sides.
y = -x + 15

Substitute y into the other equation.

.2x + .12(-x + 15) = .18(15)
Simplify.
.2x - .12x + 1.8 = 2.7
Subtract 1.8 from both sides.
.08x = .9
Divide both sides by .08
x = 11.25

Substitute x in the equation that we isolated y in.

y = -11.25 + 15
y = 3.75

11.25 L of the first antifreeze and 3.75 L of the second.
5 0
3 years ago
For the function f(x) = x + 9, find (f o f-1)(5) A. 14 B. 5 C. -5 D. 25
Alex Ar [27]
F-1:
y=x+9
y-9=x
x-9=f-1
f-1(14)=14-9=5 f-1(5)=5-9=-4  f-1(-5)=-5-9=-14 f-1(25)=25-9=16
f(14)=14+9=24 f(5)=5+9=14 f(-5)=9-5=4 f(25)=25+9=34
5 0
3 years ago
Help me pls I kind of confused
Sunny_sXe [5.5K]
Ok so basically you have to anahajahabdbnxnxkskalakand
4 0
3 years ago
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If y varies inversely as x and x is 6 when y is 13, what is x when y is 8?
Vikki [24]
Y = k/x
13 = k/6
k = 78

y = k/x
8 = 78/x
8x = 78
x = 78/8
x = 9.75
4 0
4 years ago
Read 2 more answers
A triangle is placed in a semicircle with a radius of 3 yd, as shown below. Find the area of the shaded region.
Kitty [74]

Answer:

Considering that the shaded area is the part of the semi circle outside the triangle:

Area of circle= Pi x radius2 (this means radius squared)

Area of triangle= 1/2 x base x height

1/2 (because it is a semi circle) x 3.14 (in replacement of pi as directed by question) x 9squared= 127.17

127.17 - (1/2 x 18 x 9) = 46.17cmsquared

3 0
3 years ago
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