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3 years ago

Write an equation for the description. the sum of 17 and a number x is equal to 21

Mathematics

2 answers:

pychu [463]3 years ago

8 0

<h2><u>Answer:</u></h2><h3>17+x = 21</h3><h3 /><h3>(i did the math assignment) </h3>

lawyer [7]3 years ago

7 0

Answer:

Equation: 17+x=21

btw x=4

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On a map, the scale shown is 1 inch: 20 miles. If a city is 900 square miles, what is the area of the city on the map?

WITCHER [35]

Answer:

2.25 square inches

Step-by-step explanation:

we know that

The scale is $1\ inch: 20\ miles$

That means

1 inch on a map represent 20 miles in the city

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Applying proportion

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3 years ago

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satela [25.4K]

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2 years ago

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A bacteria colony increases in size at a rate of 4.0581e1.6t bacteria per hour. If the initial population is 36 bacteria, find t

Harrizon [31]

Answer:

1560

Step-by-step explanation:

The rate of Increase of the population (P) of the bacteria is given as:

$\frac{dP}{dt} =4.058e^{1.6t}$

$dP =4.058e^{1.6t}}dt\\Taking\: Integrals\\\int dP =4.058 \int e^{1.6t}dt\\P(t)=\frac{4.058}{1.6} (e^{1.6t} +K)\\P(t)=2.53625 (e^{1.6t} +K)$

Where k is a constant of Integration.

At t=0, P(t)=36

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Therefore:

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3 years ago

A car is traveling at a constant speed of M miles per hour. Which coordinate is

lbvjy [14]

(1, M) this represents the miles per hour, which'll help find the other coordinates.

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