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3 years ago

Please help due tomorrow! Math

Mathematics

1 answer:

Hitman42 [59]3 years ago

8 0

The seats in the theater follows the sequence given by:
7,9,11,..
This is an arithmetic sequence which follows an explicit formula given by:
an=a+(n-1)d
where:
a=first term
d=common difference
but
a=7 and d=9-7=2
thus
an=7+(n-1)2
an=7+2n-2
an=2n-5
Thus the number of seats in nth row is:
an=2n-5

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Daniel [21]

I don't understand this question.. is that how it is worded on your paper?

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3 years ago

Pls help i cant think rn

grandymaker [24]

Answer:

just write it into a number problem instead of word problem, then I can solve it!! :)

Step-by-step explanation:

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4 years ago

A 393939-meter ladder is sliding down a vertical wall so the distance between the bottom of the ladder and the wall is increasin

Pepsi [2]

The rate at which the distance between the top of the ladder and the ground at that instant is decreasing at 42 meters per minute.

Given length of ladder 39 m and the rate at which the wall is increasing is 101, the bottom of the ladder is 36 m from the wall.

Let bottom is x and the length of wall be y.

We have to find the rate at which the distance between the top of the ladder and the ground at that instant.

we have to find dy/dt.

We have to apply pythagoras theorem first.

$x^{2} +y^{2} =39^{2}$ ---------------1

$x^{2} +y^{2} =1521$

put the value of x=36 in the above equation

$36^{2} +y^{2} =1521$

$y^{2} =225$

y=15 m

We have to find the derivative of equation 1 with respect to t.

2x*dx/dt+2y*dy/dt=0

Because it is given that bottom is increasing at 101 meters per minute so dx/dt=101

2x*101+2y*dy/dt=0

put the value of y=15

2x*101+2*15*dy/dt=0

dy/dt=-3030/2*36

dy/dt=-42.08

Hence the rate at which the rate at which the top of the ladder and the ground at that instant is decreasing at 42 meters per minute.

Learn more about pythagoras theorem at brainly.com/question/343682

#SPJ4

Question is wrong so it includes ladder length be 39 meters and the rate of increasing of bottom of ladder from bottom of wall is 101 meters per minute and the bottomis 36 m from the wall.

8 0

2 years ago

Dr. Manion a mixed 9.357G of chemical A, 12.082g of chemical b,

Gnoma [55]

Amount of chemical A mixed in medicine = 9.357 g

Amount of chemical B mixed in medicine = 12.082 g

Amount of chemical C mixed in medicine = 7.502 g

We have to determine the total amount of medicine he prepared in grams.

Total amount of medicine

= 9.357 + 12.082 + 7.502

= 28.941 grams

So, he prepared 28.941 grams of medicine.

Now, we have to round each chemical to the nearest tenth.

Amount of chemical A mixed in medicine = 9.357 g

Rounding to nearest tenth = 9.4 grams

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Rounding to nearest tenth = 12.1 grams

Amount of chemical C mixed in medicine = 7.502 g

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6 0

3 years ago

A field is a rectangle with a perimeter of 1100 feet. The length is 300 feet more than the width. Find the width and length of t

Wewaii [24]

Answer:

Step-by-step explanation:

perimeter of rectangle = 1100

let breadth be x

length = 300 + x

perimeter of rectangle = 2(l + b)

1100 = 2(300 + x + x)

1100 = 2(300 + 2x)

1100 = 600 + 4x

1100 - 600 = 4x

500 = 4x

500/4 = x

125 = x

therefore breadth is 125 feet

length = 300 + 125

=425 feet

8 0

3 years ago

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