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snow_lady [41]
3 years ago
5

All of the following proportions are equivalent except

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
6 0
I think that the answer would be B
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Jayden has been reading a 275275275-page book for english class. on average, he has read about 101010 pages in 151515 minutes (\
Vitek1552 [10]
<span>75 pages.
   OK. Lots of copying errors here. I'll be using 275 page book, reading 10 pages per 15 minutes, skimming 15 pages per 10 minutes, 5 hours and 50 minutes to complete the book.
   To make things easier, first convert the time to just minutes. So 5 * 60 + 50 = 300 + 50 = 350 minutes.

   Now let's use the variable X for the number of minutes spent skimming and (350-X) for the number of minutes spent reading.
 X * 15/10 + (350 - X)*10/15 = 275

   Solve for X.
 X * 15/10 + (350 - X)*10/15 = 275
 X * 15/10 + 350*10/15 - X*10/15 = 275
 X * 15/10 - X*10/15 = 275 - 350*10/15
X(15/10 - 10/15) = 275 - 3500/15
 X(45/30 - 20/30) = 825/3 - 700/3
 X(25/30) = 125/3
 X = 125/3 * 30/25 = 125/1 * 10/25 = 5/1 * 10/1 = 50/1 = 50
   So Jayden spent 50 minutes skimming. And at the rate of 15 pages every 10 minutes, he skimmed 50*15/10 = 750/10 = 75 pages.</span>
7 0
3 years ago
Pleased help me answer this I'm confused. look at picture​
skad [1K]

Answer:

23 + 16 = 39

39 - 16 = 23

the student did not reverse the sum correctly

7 0
3 years ago
the probability of a number cube landing on 4 is 1/6 if a number cube is tossed 12 times how many times can it be expected to la
oksano4ka [1.4K]
The answer is twice, because 1/6 of 12 is 2
7 0
3 years ago
Instructions: Find the missing side lengths. Leave your answers as radicals in simplest form.
sweet-ann [11.9K]

Answer:

x = 10\sqrt{3}, y = 10

Step-by-step explanation:

Using the sine/ cosine ratios in the right triangle and the exact values

sin60° = \frac{\sqrt{3} }{2} , cos60° = \frac{1}{2} , then

sin60° = \frac{opposite}{hypotenuse} = \frac{x}{20} = \frac{\sqrt{3} }{2} ( cross- multiply )

2x = 20\sqrt{3} ( divide both sides by 2 )

x = 10\sqrt{3}

and

cos60° = \frac{adjacent}{hypotenuse} = \frac{y}{20} = \frac{1}{2} ( cross- multiply )

2y = 20 ( divide both sides by 2 )

y = 10

4 0
3 years ago
S squared minus y cubed
mash [69]

Answer:

s^2 - y^3 ........

Step-by-step explanation:

s^2 - y^3

8 0
3 years ago
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