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padilas [110]
3 years ago
8

Brigitte is shorter than 5 feet briquettes height = h

Mathematics
1 answer:
katovenus [111]3 years ago
3 0
Her height would be h<5 feet
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Please, my whole grade depends on this question!!!
Effectus [21]

Answer:

Y =  1/2 times -3 ( 1 x 5 )

Step-by-step explanation:

6 0
3 years ago
John puts the base of a 13 foot ladder 4 feet from the wall of his house. How far up the wall does the ladder reach? Round your
antiseptic1488 [7]

Answer:

12.04 feet

Step-by-step explanation:

Applying Pythagoras theorem,

a^{2}= b^{2} + c^{2}

13^{2} =4^{2} + c^{2}

c^{2} = 145

c=\sqrt{145}

c=12.04

7 0
3 years ago
Find the general solution to the differential equation modeling how a person learns:
Luda [366]

Here we want to solve differential equations, we will see that the general solution is:

y = A*e^{-t} + 100

We want to solve the differential equation:

\frac{dy}{dt}  = 100 - y

From this is pretty clear that y is an exponential function, with an exponent of -1*t.

We can write it generally as:

y = A*e^{-t} + B\\\\\frac{dy}{dt}  = -A*e^{-t}

Then if we set B = 100 we get:

y = A*e^{-t} + 100\\\\\frac{dy}{dt}  = -A*e^{-t} \\\\\frac{dy}{dt}  = -A*e^{-t} - 100 + 100 = -y + 100

So we just found the general form of the function.

Now we have two cases:

A) y(0) = 35

y(0) = A*e^{-0} + 100  = 35\\=  A + 100 = 35\\\\A = 35 - 100 = -65

In this case, the function is:

y = -65*e^{-t} + 100

B) y(0) = 125

125 = A*e^0 + 100\\\\\125 - 100 = A\\\\25 = A

In this case, the function is:

y = 25*e^{-t} + 100

Now we want to see which one of the two can represent how a person learns. Just look at the graph below:

The green line is the one for y(0) = 35, and the blue one is for y(0) = 125.

Notice that for small values of t, the blue function is really large, thus it can't really model how a person learns (is larger for smaller values of t than for larger values).

So y(0) = 35 represents better how a <em>person can learn</em> (but not exactly, because you can see that it eventually becomes almost constant, which is something that really does not happen) so the correct option is <u>D: none of the above.</u>

If you want to learn more, you can read:

brainly.com/question/353770

3 0
3 years ago
How many ounces of iodine worth 30 cents an ounce must be mixed with 50 ounces of iodine with 18 cents an ounce so that the mixt
Aliun [14]
<span>Let x denote number of ounces of 30-cent iodine.
Mixing of 50 ounces of 18-cent iodine and x ounces of 30-cent iodine will result in (50+x) mixture of iodine. We want the mixture to be worth 20 cent per ounce. The value of 50 ounces of 18-cent iodine is of course
  50â‹…18=900.
 Similarly, x ounces of 30-cent iodine is worth 30â‹…x.
 Finally, 50+x ounces of 20-cent iodine will cost (50+x)â‹…20.
   30x+50â‹…18=(50+x)â‹…20
   30x+900=1000+20x
   10x=100
   x=10</span>
4 0
3 years ago
Read 2 more answers
Guys please helppppppppppppppppppppppppppppp
bearhunter [10]

Answer:

the 2nd one is the answer

4 0
2 years ago
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