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professor190 [17]
3 years ago
6

What does it mean for two ratios to form a proportion

Mathematics
1 answer:
Triss [41]3 years ago
3 0
Ratio = 4 or 4/1 

4/10 = x/80

so 4x times (10 times 80)
  
=  

4x=800
divide both sides with 4 

x=200

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An airplane ascends such that its gain h in altitude is proportional to the square root of the change x in horizontal distance t
Mazyrski [523]

Answer:velocity=185 m/s

Step-by-step explanation:

So make k the subject of the formula by divide both by sqrt(x)

h= k × sqrt(x)

k=h/sqrt(x)

k=256 / sqrt(256)

k=256 / 16

k=16

So now substitute the value of k :

h= 16 × sqrt (x)

Then differentiate:

=(1/2 × sqrt(x))× 16

=16/(2×sqrt(x)

=8/sqrt(x)

Then

= 8/sqrt(x) × 370

=8/ sqrt(256) × 370

=8/16 × 370

velocity=185 m/s

6 0
3 years ago
Are the lines below parallel, perpendicular, or neither?
levacccp [35]

Answer:

<h2>Neither </h2><h2></h2>

2y = 3x - 4

y = 2/3x - 3

Step-by-step explanation:

Parallel means the lines never cross. These two lines cross. Perpendicular means they cross and form a 90° angle.

5 0
3 years ago
Read 2 more answers
A parabola passes through (7, 42) and has a vertex at (-2, 6). What is the value of a?
alexdok [17]
Bru are u serious ? it’s C 7 x the parable equates with the equinox of traversal is 36/5
5 0
3 years ago
1/2 of 2/3 = 1/2 of ____ third(s) =____third(s)
adoni [48]
I'll write the equation again with the blanks filled in.

1/2 of 2/3 = 1/2 of two thirds = one third

2/3 is read as two thirds.

Half of 2/3 is 1/3, because 1/3+1/3=2/3

Hope this helps!
6 0
3 years ago
For the Black Panther Trip 420 students were scheduled to go. After collecting more parent surveys, 15% more students are going
natulia [17]

Answer: $ 10,988.25

Step-by-step explanation:

Hi, to answer this question, first we have to multiply the original number of students scheduled to go to the trip (420) by the added students’ percentage (15%) in decimal form (divided by 100)

420 x (15/100) = 420 x 0.15 = 63 students added

Adding the number of extra students to the original number:

420+63 = 483 students (total number of students)

Finally, we have to multiply the result by the cost of each admission ticket (22.75)

483 x 22.75 = $ 10,988.25  

4 0
3 years ago
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