4) Given:
Solve for x. Show all work.

x = 40

Step-by-step explanation:

Hello there!

Remember the circumference of a circle in degrees is equal to 360

so all of the arcs added together will equal 360

360 = x + 20 + 3x + 15 + 4x + 5

step 1 combine like terms

1x+3x+4x=8x

20+15+5=40

now we have 360 = 8x + 40

step 2 subtract 40 from each side

360 - 40 = 320

40 - 40 cancels out

now we have 320 = 8x

step 3 divide each side by 8

320/8=40

8x/8=x

we're left with x = 40

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step-by-step explanation:

the above table 1 will calculate the population size (n) after a certain length of time (t). all you need to do is plug in the initial population number (no), the growth rate (r) and the length of time (t). the constant (e) is already entered into the equation. it stands for the base of the natural logarithms (approximately 2.71828). growth rate (r) and time (t) must be expressed in the same unit of time, such as years, days, hours or minutes. for humans, population growth rate is based on one year. if a population of people grew from 1000 to 1040 in one year, then the percent increase or annual growth rate is 40/1000 x 100 = 4 percent.

step-by-step explanation: