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Lostsunrise [7]
3 years ago
7

Bella surveyed the first 15 students in the lunch line.

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
3 0

Answer:

No

Step-by-step explanation:

Only people in the lunch line got surveyed, that on it's own is biased.

Only 15 people out of the entire school.

Only the first people got surveyed.

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the smiths spend 6% of their budget on entertainment. their total budget this year is $1,000 more than last year, this year they
Lilit [14]
Answer: Their total budget last year was $40,000.
Step-by-step explanation:
Given : The Smiths spend 6% of their budget on entertainment.
i.e. , The money they spend on entertainment = 0.06 x ( Total budget)
{ 6% is converted to 0.06 , when we divide it by 100 to remove percentage)
Since , this year they plan to spend $2,580 on entertainment.
i.e. 0.06 x ( Total budget ) = $2,580
On dividing both sides by 0.06 , we get
( Total budget ) = $2,580 ÷ 0.06
= $43,000
Thus , their total budget for this year = $43,000
Also, Their total budget this year is $3,000 more than last year.
Therefore , their last year total budget = ( Total budget this year ) - $3000
= $43,000 - $3000
= $40,000
Hence, their total budget last year was $40,000.

Hope this helps! Also can I have brainliest? It’s ok if no :) have a nice day.
4 0
3 years ago
The difference between the number of customers in line at the express checkout and the number in line at the superexpress checko
icang [17]
The table is:0 1 2 3 

x1 0 0.08 0.06 0.04 0.00 

1 0.05 0.18 0.05 0.03 

2 0.05 0.04 0.10 0.06 

3 0.00 0.03 0.04 0.07 

4 0.00 0.01 0.05 0.06 


Expected difference =
+(0.08*(0-0)) +(0.06*(0-1)) +(0.04*(0-2)) +(0.00*(0-3)) +(0.05*(1-0)) +(0.18*(1-1)) +(0.05*(1-2)) +(0.03*(1-3)) +(0.05*(2-0)) +(0.04*(2-1)) +(0.10*(2-2)) +(0.06*(2-3)) +(0.00*(3-0)) +(0.03*(3-1)) +(0.04*(3-2)) +(0.07*(3-3)) +(0.00*(4-0)) +(0.01*(4-1)) +(0.05*(4-2)) +(0.06*(4-3))
= 0.17
6 0
3 years ago
Given that QT is and altitude of triangle QRS and that m
iris [78.8K]

Hello from MrBillDoesMath!

Answer:

15

Discussion:

Given: measure angle STQ = 7x + 55.  But, as shown, STQ is a right angle so

7x + 55 = 90          => subtract 55 from each side

7x = 90 -55 = 35   => divide each side by 7

x = 35/7 = 5

Since RS = (x+1)    + (2x-1)  where x = 5.

     RS = (5 + 1) + (2*5 -1)

           = 6         + 9

           = 15

I don't know what choice the answer is as your diagram only shows Choice A

Thank you,

MrB

3 0
3 years ago
Read 2 more answers
the sum of two numbers is 45. the greater number is 9 more than the other number. Find each number. use a system of linear equat
SpyIntel [72]

Answer:

18 and 27

Step-by-step explanation:

Let x = first (smaller) number

Let y = second (larger) number

Sum of two numbers is 45:

⇒ x + y = 45

The greater number is 9 more than the other number:

⇒ y = x + 9

Substitute  y = x + 9  into  x + y = 45  and solve for x:

⇒ x + (x + 9) = 45

⇒ 2x + 9 = 45

⇒ 2x = 36

⇒ x = 18

Substitute found value for x into  y = x + 9  and solve for y:

⇒ y = 18 + 9

⇒ y = 27

Therefore, the two numbers are 18 and 27

5 0
2 years ago
Read 2 more answers
Solve for m<br> 2/5 = m/70 =<br> show work and order of operations
Black_prince [1.1K]

Answer:

m = 28

Step-by-step explanation:

70 × 2 = 5m

140 = 5m

28 = m

4 0
3 years ago
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