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SashulF [63]
4 years ago
11

Number 13? thanks!!!!

Mathematics
2 answers:
alexgriva [62]4 years ago
3 0
Total of the 6 lawna = 10 + 15 + 12 + 15 + 8 + 15 = $75

Given that the mean is $12 for 7 lawns,
Total of the 7 lawns = 12 x 7 = $84

Therefore the 7th lawn is:

$84 - $75 = $9

---------------------------------------------------------------
Answer: He earns $9 on the 7th lawn. (Answer A)
--------------------------------------------------------------- 
liraira [26]4 years ago
3 0
All you need to do is to find the number than when divided by 7 gives you 12...
7x12 = 84.
Add the current numbers. 10 + 15 + 12 + 15 + 8 + 15 = 75. 
84 - 75 = 9...
9$ the seventh time...

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Luis has an account at GESA Credit Union. He had a balance of $500.00 starting January 15th. He made deposits of $100, $250, and
Oliga [24]

Answer: $531.51

Step-by-step explanation:

Initial balance of 500

If he made deposits into his account that means he added to his existing balance so his new balance would be the initial 500 plus all the deposits:

500 + 100 + 250 + 300 = 1150

so after the deposits he has a new balance of 1150. He then withdrew money which means he's subtracting from his balance so his new balance will be his current balance minus all the withdraws:

1150 - 400.32 - 100 - 55.55 - 62.62 = 531.51

3 0
3 years ago
Can you help me, please <br>BRAINLIEST included ​
liberstina [14]

Answer:

P = 3x + 7

Step-by-step explanation:

The perimeter (P) is the sum of the 3 sides of the triangle, that is

P = x + 5 + x + 4 + x - 2 ← collect like terms

  = 3x + 7

7 0
3 years ago
7. Present age of Rahul is 't years
Tcecarenko [31]

Step-by-step explanation:

a) rahul's age = t

rahul's age 8 yrs. back = t - 8

6 0
3 years ago
(1 point) Let f be a periodic function of period 10 such that f(x)=x2 for −5≤x&lt;5. Then the Fourier series of f is
ehidna [41]

Answer:

The answer is "\frac{25}{3}".

Step-by-step explanation:

please find the complete question in the attached file.

a_0=\frac{1}{10}\int^{5}_{x=-5} x^2 dx\\

   =\frac{1}{10} (\frac{x^3}{3})^{5}_{-5}\\\\=\frac{1}{30}[5^3+5^3]\\\\=\frac{2}{30}(125)\\\\=\frac{1}{15} \times 125\\\\=\frac{25}{3}

7 0
3 years ago
Solve the system of equations by the substitution method
slava [35]

Answer:

x=0.5

y = 10.5

Step-by-step explanation:

y = 3x + 7

y = 5x + 8

3x + 7 = 5x + 8

3x - 5x=  8 - 7

2x = 1

x= 1/2

x=0.5

y = 5x + 8

y = 5(0.5) + 8

y = 2.5 + 8

y = 10.5

8 0
3 years ago
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