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hoa [83]
2 years ago
14

Solve:2x + 4 - 3x = -11

Mathematics
1 answer:
JulijaS [17]2 years ago
4 0

Answer:

15

Step-by-step explanation:

-1x+4=-11

subtract 4 on both sides

-1x=-15

divide

15

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Alex sold wrapping paper rolls (r) as part of a school fundraiser. He earned a total of 156 reward points from his sales. Using
Eva8 [605]

Answer:

52

Step-by-step explanation:

Alex earned 156 reward points for selling wrapping paper rolls.

Using the given equation

3r = 156

r = 156/3

r = 52

Alex sold 52 wrapping paper rolls

5 0
3 years ago
Historical data for a local steel manufacturing company shows that the average number of defects per standard sheet of steel is
Yanka [14]

Answer:

Therefore the correct answer is A.) 84.88%

Step-by-step explanation:

i) λ = 2

ii) λ for three units = 2 \times 3 = 6

iii) P(x ≥ 4) = 1 - P(x < 4) = 1 - {P(x = 0) + P(x = 1) + P(x = 2)  + P(x = 3) }

                                = 1 - { \frac{e^{-6}6^{0} }{ 0!} + \frac{e^{-6}6^{1} }{ 1!}  + \frac{e^{-6}6^{2} }{ 2!} + \frac{e^{-6}6^{3} }{ 3!}  }

                                = 1 - (0.0025 + 0.0149 + 0.0446 + 0.0892)

                                = 0.8488

 Therefore the correct answer is A.) 84.88%

 

8 0
3 years ago
A mechanic charges $45 per hour and parts cost $125 write an expression for the total if the mechanic works h hours
Free_Kalibri [48]
This is my expression: 45h + 125. I hope this helps.
4 0
3 years ago
How old will kirans aunt be when Kiran is 30 years old
Gemiola [76]

Answer

kiran's aunt is 17 years older than Kiran. How old will Kiran's aunt be when Kiran is: 15 years old? 30 years old? years old? How old will Kiran be when his aunt ...

Step-by-step explanation:

4 0
3 years ago
If the simple interest rate is 5%p.a. , how long does it take for the amount to become twice the principal
solong [7]
A = P + I
2a = a + PTR/100
2a = a + 5aT/100
2a = a(1+T/20)
2=1+T/20
T=20 yrs

3 0
3 years ago
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