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liberstina [14]
2 years ago
7

Help me with this pls

Mathematics
2 answers:
kozerog [31]2 years ago
8 0

Answer:

x=2  y=17

Step-by-step explanation:

53/17       17x3 = 51     53-51     3 + 1/   x + 1/y

Marat540 [252]2 years ago
7 0

Answer:

x+y = 10

Step-by-step explanation:

~~~\dfrac{53}{17}\\\\\\=3 \dfrac{2}{17}\\\\\\=3+ \dfrac{2}{17}\\\\\\=3+\dfrac{1}{\tfrac{17}2}\\\\\\=3+\dfrac{1}{8\tfrac 12 }\\\\\\=3+ \dfrac{1}{8+ \dfrac 12 }\\\\\\\text{By comparing with}~ 3 + \dfrac 1{x + \tfrac 1y},~ \text{we get}~ x = 8~ \text{and}~ y = 2.\\\\\text{Hence,}~ x +y = 8+2 =10.

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What is the solution to x/3 = -12
Mademuasel [1]

Answer:

x = -36

Step-by-step explanation:

Just multiply both sides of the equation with 3...,which tend to give a solution of,

; x = -12(3)

; x = -36

7 0
3 years ago
At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 18 m
Colt1911 [192]

Answer:

99.7% of customers have to wait between 8 minutes to 30 minutes for their food.

Step-by-step explanation:

We are given the following in the question:

Mean, μ = 18 minutes

Standard Deviation, σ = 4 minutes

We are given that the distribution of amount of time is a bell shaped distribution that is a normal distribution.

Empirical Formula:

  • Almost all the data lies within three standard deviation from the mean for a normally distributed data.
  • About 68% of data lies within one standard deviation from the mean.
  • About 95% of data lies within two standard deviations of the mean.
  • About 99.7% of data lies within three standard deviation of the mean.

Thus, 99.7% of the customers have to wait:

\mu -3\sigma = 18-3(4) = 6\\\mu +3\sigma = 18+3(4) = 30

Thus, 99.7% of customers have to wait between 8 minutes to 30 minutes for their food.

3 0
3 years ago
Right now Martha has $600 in her savings account she wants to purchase a used car she decides that it we should put $20 into acc
lapo4ka [179]

Multiply the amount she puts in the account every week by the number of weeks (w) and add that to what she already has saved:

20w + 600 >= 2000

6 0
3 years ago
Read 2 more answers
Jonathan saved money to have a party if he spends to eight of his money on food 1/5 of his money on prices and two tenths of his
erik [133]

Answer:

7/20 is left

Step-by-step explanation:

2/8 (reduced is 1/4) for food

1/5 for prizes

2/10 (reduced is 1/5) for decorations

? for what's left

Add all the fractions up by finding a common denominator.

1/4 + 1/5 + 1/5

5/20 + 4/20 +4/20 = 13/20

He spent 13/20 of his money on this stuff. What part of that is left?

1 - 13/20 (AKA 20/20 - 13/20)

= 7/20

8 0
3 years ago
Jayden is running laps at track practice. The track is 2/5 kilometers around. Jayden runs 1 lap in 2 minutes. How many minutes d
Tom [10]

Answer:

0.08 minutes for a kilometer.

Step-by-step explanation:

If the track is 25 kilometers, and he runs 25 kilometers in 2 minutes, he runs a kilometer in 2÷25 minutes or 0.08 minutes which is 4.8 seconds.

I'm pretty sure the track isn't 25 kilometer or he can't run a lap in 2 minutes. But if so, the answer is 0.08 minutes.

4 0
3 years ago
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