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earnstyle [38]
4 years ago
7

0.4r-1.2=0.3r+0.6 can you help me out on this question??

Mathematics
1 answer:
Ray Of Light [21]4 years ago
5 0
The answer is R=18 I hope this helps
You might be interested in
Jenna drove 90 miles in 1 1/2 hours. How long will it take her to drive 300 miles?
oksano4ka [1.4K]
I think I would set a proportion for this. 1 1/2 hours is 90 minutes. So 90 minutes and 90 miles.

90 300
—- = ——.
90 X

As you can see, miles on top and minutes on the bottom. Now, cross multiply. 90x = 300(90)
90x=27,000
Divide by 90 on both sides to get x alone.
90x/90= x 27,000/90=300

300 minutes would be 5 hours!
8 0
4 years ago
How many liters of glycerin should be added to 12 liters of an 8% glycerin solution so that the resulting solution contains 16%
Naily [24]

1.143 liters of glycerin should be added to 12 liters of an 8% glycerin solution so that the resulting solution contains 16% glycerin.

For given question,

Let x be the quantity ( in liters ) of glycerin added to 12 liters of an 8% glycerin solution so that the resulting solution contains 16% glycerin,

Thus,

Quantity of glycerin in 12 liters + Quantity of glycerin in x

= Quantity of glycerin in resultant mixture.

⇒ 8% of 12 + 100% of x = 16% of (12 + x )

⇒ 0.08 × 12 + x = 0.16 × ( 12 + x )

⇒ 0.96 + x = 0.16 × 12 + 0.16x

⇒ 0.96 + x = 1.92 + 0.16x

⇒ x - 0.16x = 1.92 - 0.96

⇒ 0.84x = 0.96

⇒ x = 1.143 liters

Therefore, 1.143 liters of glycerin should be added to 12 liters of an 8% glycerin solution so that the resulting solution contains 16% glycerin.

Learn more about the resulting solution here:

brainly.com/question/12051765

#SPJ4

7 0
2 years ago
The poster in the library is rhombus shaped. If one side length is 11 inches long, what is the perimeter of the poster?
mixas84 [53]
It iS C C C C C C C C C 
8 0
3 years ago
Read 2 more answers
What is the axis of symmetry of the parabola y= 1/3 (x-10)^2 - 6
GalinKa [24]

Answer:

The equation of the axis of symmetry is equal to

x=10

Step-by-step explanation:

we have

y=\frac{1}{3}(x-10)^2-6

This is the equation of a vertical parabola written in vertex form open upward (because the leading coefficient is positive)

The vertex represent a minimum

The axis of symmetry is equal to the x-coordinate of the vertex

we have that

The vertex is the point (10,-6)

The x-coordinate of the vertex is 10

therefore

The equation of the axis of symmetry is equal to

x=10

7 0
3 years ago
The width of a rectangular frame is 8 inches and the diagonal length of the frame is 17 inches. What is the length of the frame
alexdok [17]
15 because when you do the Pythagorean Therom 8squared plus the length squared equals 17squared so you get x squared equals 15
8 0
3 years ago
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