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Stella [2.4K]
3 years ago
10

What is 3m+2n+5m-7n​

Mathematics
1 answer:
Lady_Fox [76]3 years ago
5 0

Answer:

\fbox{8m-5n}

Step-by-step explanation:

Let me know if you want the full explanation. Have a great weekend! ❤

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Clare analyzes oil prices in her economics class. She finds that the mean oil price between 1988 and 2002 is $27 per barrel with
avanturin [10]

Answer:

Option 2: 1.5 is the correct answer.

Step-by-step explanation:

Given information is:

Mean = μ = $27

SD = σ = $5.50

A z-score simply tells us how far a selected data value from the mean is.

Z-score is denoted by z and is given by the formula:

z = \frac{x-mean}{SD}

Let x = $35.25

Putting the values of mean and SD we get,

z = \frac{35.25-27}{5.50}\\z = \frac{8.25}{5.50}\\z =1.5

The value of z-score for a price of $35.25 per barrel is 1.5

Hence,

Option 2: 1.5 is the correct answer.

7 0
3 years ago
C) If the spinner is spun another 1000 times,
trapecia [35]

Answer:

130

Step-by-step explanation:

<u>Probability of green:</u>

  • P= 39/300

<u>Number of attempts:  </u>

  • 1000

<u>Expected number of landing on green: </u>

  • <em>Expected frequency = probability × number of trials</em>
  • 1000*39/300 = 130 times

<u>Answer: </u>130 times

7 0
4 years ago
Gina wants to save money for a holiday to bali at the end of the year. she estimates that if would cost her $2200 but she only h
inessss [21]
That's a funky problem... :/  I mean it would depend on how much she earns weekly. If she were working 40 hours each week and earning 10$ an hour then yes, she would have enough. Even is she were per say a student on a part time working 30 hours and earning 8$ per hour, she would still have enough.
6 0
3 years ago
What is the area of the composite figure
kati45 [8]

To solve this we will divide the given composite figure into three figures. The three figures will be 2 squares and 1 rectangle. Let's find their areas and add them!

\boxed{ \sf \: area \: of \: square =side ^{2}  }

  • Side 3 metre

\rm \implies \: area = 3 ^{2}

\rm \implies9

<em>Thus, The area of 1st square is 9m²...</em>

  • The area of second square will be also 9m², because the sides of both squares are equal.

<h3>Now area of the reactangle⤵️</h3>

  • Length = 6m
  • Breadth = 7+3=10m

\sf \: area \: of \: rectangle = length \times breadtg

\tt \dashrightarrow \: area = 10 \times 3

\tt \dashrightarrow \: area = 30m ^{2}

<em>Thus, The area of rectangle is 30m²....</em>

  • Now, Add area of all the figures to get the total area.

\bf \:total \: area = 9 + 9 + 30 \\   \bf= 48m {}^{2}

<h3><em>Therefore, The total area of the composite figure is 48m²...~</em></h3>
8 0
2 years ago
23 base 10+1011 base 2=​
ratelena [41]

Answer:

10111

Step-by-step explanation:

10111

7 0
3 years ago
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