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mafiozo [28]
3 years ago
7

The total number of dollars you would have received if you received one dollar on your first birthday, two dollars on your secon

d birthday, four on your third, and continued doubling the dollars on each birthday to your 18th.
Mathematics
1 answer:
Tanzania [10]3 years ago
6 0

Answer:

262,143

Step-by-step explanation:

  1. 1
  2. 1+2
  3. 3+4
  4. 7+8
  5. 15+16
  6. 31+32
  7. 63+64
  8. 127+128
  9. 255+256
  10. 511+512
  11. 1023+1024
  12. 2047+2048
  13. 4095+4096
  14. 8191+8192
  15. 16,383+16,384
  16. 32,767+32,768
  17. 65,535+65,536
  18. 131,071+131,072

        =262,143

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Find the missing value: x2 (squared) = 625 5 10 25 50
Alona [7]

\bf x^2=625\implies x=\sqrt{625}\implies x=25

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3 years ago
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Sam is 6 years older than marlon. The sum of their ages is 30. Find Sam and marlons age.
Triss [41]

Answer:

Sam = 18 and Marlon = 12

Step-by-step explanation:

If Sam is 6 years older but added is 30 then Sam could 18 and Marlon 12.

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You ride your bike x miles per hour up a mountain for 45 minutes. On the way down the mountain, you ride your bike 3 miles per h
denpristay [2]

Answer:

18/5 miles

Step-by-step explanation:

let d be the mountain dist path

upward biking

x miles - 1 hr

d 45 mins

3x/4 = d

riding down

x+3 - 60 min

d. - 20

(1/3)(x+3) = d

(x+3)/3 = 3x/4

4x+12 = 9x

x = 12/5

d =( 12*3)/(4*5)= 9/5

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7 0
2 years ago
How do you solve x to the second power +7x=O
crimeas [40]
Well the answer is 0 because if anything = 0 then it has to be multiplied by 0 so x = 0

8 0
3 years ago
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Solve the system of equations using the elimination method. 1.Solve {x + 3y = -15
shutvik [7]

An equation is formed of two equal expressions. The solution is (-9,-2).

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given the equation x + 3y = -15 and -3x + 2y = 23,

Step 1- Multiply the equations to make the coefficients match in either the x- or y-variable.

x + 3y = -15

3x + 9y = -45

Step2- After you multiply, add or subtract the two equations.

3x + 9y -3x + 2y = -45 + 23

Step 3- Then solve for the variables that is left.

11y = -22

y = -2

Step4- Substitute the value of y in any one of equations to solve for x.

x + 3(-2) = -15

x - 6 = -15

x = -9

Hence, The solution is (-9,-2).

Learn more about Equation:

brainly.com/question/2263981

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5 0
2 years ago
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