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mr Goodwill [35]
3 years ago
15

I need the equation for this ASAP!

Mathematics
2 answers:
Sindrei [870]3 years ago
8 0

Answer:

5.714 liters of the 5% solution and 4.286 of the 40%.

Step-by-step explanation:

Let x be the volume of 40% solution and y = volume of the 5% solution.

x + y = 10

0.40x + 0.05y = 0.20(x + y)

From the first equation x = 10 -y so we have:

0.40(10 - y) + 0.05y = 0.20( 10 - y + y)

4 - 0.40y + 0.05y = 2

-0.35y = -2

y = 5.714 liters of the 5%.

and x =  10 - 5.714 = 4.286  liters of the 40% solution.

Step-by-step explanation:

maxonik [38]3 years ago
8 0
I do not understand
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True or false "No rectangle is a rhombus?"
alukav5142 [94]
False.
Rhombuses may be rectangles<span>, as long as the shape is a square. </span><span>Every square is a </span>rhombus <span>if all its angles equal 90 degrees.</span>
4 0
3 years ago
The central angle of a regular polygon is 18 degrees. Th e perimeter of the polygon is 144 ft. What is the area of the polygon t
Diano4ka-milaya [45]
Given that the central angle of a polygon is 18, then the number of sides of the polygon will be:
360/18
=20 sides
thus the side length will be:
144/20
=7.2 ft
hence the area will b given by:
p=s×n
a=s/[2tan(180)/n]
where:
Area=(a×p)/2
p=perimeter, s=side length, n=number of sides
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a=7.2/[2tan (180/20)]=22.73
thus
A=(144×22.73)/2
A=1632.524 ft²
7 0
3 years ago
A scale drawing of a car has a scale of 1 inch to 3 feet if the length of the car is 5 inches on the drawing, what is the actual
aleksandrvk [35]

Answer:

3 fet

Step-by-step explanation:

5 0
3 years ago
Please help and no links
Klio2033 [76]

Answer:

B) y=3x

Step-by-step explanation:

2 x 3 = 6

3 x 3 = 9

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You can find y by multiplying the x by 3. The relationship between the x and y is proportional. For example, lets say my x is 20, my y would be 60. 20 x 3 = 60.

If you are still unsure, remember constant of proportionality is k=y/x, so your constant is 3.

6 0
3 years ago
Read 2 more answers
1
igor_vitrenko [27]

im not sure if im suppose to simplify the expression or? but if i am the answer is - 3 x^4 + 4 x^3 + 52 x 2 - 80x + 160

I spend time editing and getting answers so can I have a brainliest and/or a thank you please <33 :)

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3 years ago
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