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Makovka662 [10]
2 years ago
10

how many of the first 80 positive integers can he written as the sum of two distinct powers of 3? for example, 28=27+1=3^3+3^0 c

an be expressed, but 29 cannot be.
Mathematics
1 answer:
lina2011 [118]2 years ago
8 0

Answer:6

Step-by-step explanation:

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What is an equation for the line with slope 2/3 and 7-intercept 9? 30 points to whoever answers this correctly and gets brainlie
Annette [7]

The equation of the line is y = \frac{2}{3} x + 9

Step-by-step explanation:

The equation of a line in slope-intercept form is y = m x + b, where

  • m is the slope of the line
  • b is the y-intercept ⇒ the value of y when x = 0

∵ The line has a slope \frac{2}{3}

∴ m = \frac{2}{3}

∵ The y-intercept is 9

∴ b = 9

- Substitute the values of m and b in the form of the equation below

∵ y = m x + b

∴ y = \frac{2}{3} x + 9

The equation of the line is y = \frac{2}{3} x + 9

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4 0
3 years ago
Solve for r please 80=10r.
OLEGan [10]
R = 8 since 8 times 10 = 80
4 0
3 years ago
Read 2 more answers
BRO SOMEONE PLEASE HELP ME
zubka84 [21]

Answer:

9/10

Step-by-step explanation:

3 0
2 years ago
An item has a listed price of $30 if the sales tax rate is 7% how much is the sales tax in dollars
Svetach [21]

Answer:

The sales tax is 2.10

Step-by-step explanation:

Take the price of the item and multiply by the sales tax rate to determine the tax

30 * 7%

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4 0
3 years ago
A colony of fruit flies exhibits exponential growth. suppose that 500 fruit flies are present. let p(t) denote the number of fru
murzikaleks [220]
I FOUND YOUR COMPLETE QUESTION IN OTHER SOURCES.
 SEE ATTACHED IMAGE.

 Part A:
 
The differential equation is:
 y '= 0.08y
 
The initial condition is:
 P (0) = 500

 Part B:
 
The formula for this case is:
 P (t) = 500exp (0.08 * t)

 Part C:
 After five days we have to evaluate t = 5 in the equation.
 We have then:
 P (5) = 500 * exp (0.08 * 5)
 P (5) = 745.9123488
 Rounding:
 P (5) = 746

4 0
2 years ago
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