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3 years ago

PLEASE HELP GUYS!!!!!!

Mathematics

1 answer:

Whitepunk [10]3 years ago

5 0

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Pls help me adawdasdaw

Bas_tet [7]

7x+12+6x-2=-4
7x-6x=-4-12+2
13x=-14
x=-14 divide 13
x=-14 over 13 put 14 over 13 in a fraction

8 0

3 years ago

A 25-foot ladder is placed against a building and the top of the ladder makes a 32°

VLD [36.1K]

Answer:

are you in Math2Sec04Sum20 bc im taking the same test

8 0

3 years ago

The population of a certain species of insect is given by a differentiable function P, where P(t) is the number of insects in th

Step2247 [10]

Answer:

$\frac{dP}{dt} \ =\ \frac{1}{5}P$

Step-by-step explanation:

Given

Variation: Directly Proportional

Insects = 10 million when Rate = 2 million

i.e. $P = 10\ million$ when $\frac{dP}{dt} = 2\ million$

Required

Determine the differential equation for the scenario

The variation can be represented as:

$\frac{dP}{dt} \ \alpha\ P$

Which means that the rate at which the insects increase with time is directly proportional to the number of insects

Convert to equation

$\frac{dP}{dt} \ =\ k * P$

$\frac{dP}{dt} \ =\ kP$

Substitute values for $\frac{dP}{dt}$ and P

$2\ million = k * 10\ million$

Make k the subject

$k = \frac{2\ million}{10\ million}$

$k = \frac{2}{10}$

$k = \frac{1}{5}$

Substitute $\frac{1}{5}$ for k in $\frac{dP}{dt} \ =\ k * P$

$\frac{dP}{dt} \ =\ \frac{1}{5}* P$

$\frac{dP}{dt} \ =\ \frac{1}{5}P$

8 0

3 years ago

Which scenario best expresses a 400% increase?

otez555 [7]

Answer:

I think its 9 to 45, b.

Step-by-step explanation:

because the a gets you a 39900% , and c gets you a 500%, and d gets you a 300%. So b is the only option that makes sense.

8 0

4 years ago

A plane takes 12 hours to fly 96,000km. What was the planes speed.

Darina [25.2K]

8000km per hour.
96,000/12=8000

8 0

3 years ago

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