1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KonstantinChe [14]
3 years ago
10

I need help!!!!!......

Mathematics
1 answer:
Setler [38]3 years ago
7 0
15 times 10 + 20 times 20 = 550
You might be interested in
Find the standard deviation of 21, 31, 26, 24, 28, 26
Vesnalui [34]

Given the dataset

x = \{21,\ 31,\ 26,\ 24,\ 28,\ 26\}

We start by computing the average:

\overline{x} = \dfrac{21+31+26+24+28+26}{6}=\dfrac{156}{6}=26

We compute the difference bewteen each element and the average:

x-\overline{x} = \{-6,\ 5,\ 0,\ -2,\ 2,\ 0\}

We square those differences:

(x-\overline{x})^2 = \{36,\ 25,\ 0,\ 4,\ 4,\ 0\}

And take the average of those squared differences: we sum them

\displaystyle \sum_{i=1}^n (x-\overline{x})^2=36+25+4+4+0+0=69

And we divide by the number of elements:

\displaystyle \sigma^2=\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n} = \dfrac{69}{6} = 11.5

Finally, we take the square root of this quantity and we have the standard deviation:

\displaystyle\sigma = \sqrt{\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n}} = \sqrt{11.5}\approx 3.39

8 0
3 years ago
I need the answer for the math problem quick its due today
Step2247 [10]
Area = 14 x7 = 68 cm2
6 0
2 years ago
Need answer ASAP plssss
Marysya12 [62]

Answer:

I believe they ate 4/8. 2 apple and 2 banana muffins makes 4. They still have 4 blueberry muffins left. so 4/8

7 0
3 years ago
5% commission rate of 14.98
Arisa [49]

Answer:  If you mean 5% of $14.98, it is $0.75  75 cents

If you mean 14.98 represents a 5% commission on what sale amount

The sale amount was $299.60

Step-by-step explanation:

Change the percent to a decimal and  multiply by the sale amount.

0.05 × 14.98 = .749  Round to .75

If 14.98 is the 5% commission,  divide 14.98/.05= 299.60

7 0
3 years ago
The cost in dollars of a class party is 59 + 13n, where n is the number of people attending. What is the cost of 44 people?
SpyIntel [72]
59 + 13n = 59 + 13(44) = 59 + 572 = 631 The cost of 44 people is $631.
6 0
2 years ago
Other questions:
  • An auditorium has three levels. Level 1 seats 3,577 people, Level 2 seats 5,214 people, and Level 3 seats 5,879 people. How many
    12·1 answer
  • Is y=12(17/10)^x exponential growth or exponential decay
    7·1 answer
  • BRAINLIEST
    10·1 answer
  • The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.972 g and a standard deviation
    5·1 answer
  • Four more than a number tripled
    12·1 answer
  • [tex]40-23\frac{6}{7}
    13·2 answers
  • Which expression is equivalent to 5^3?
    5·1 answer
  • IXL math problem please help
    7·1 answer
  • A bouncing ball reaches a height of 27 feet at its first peak, 18 feet at its second peak, and 12 feet at its third peak. Descri
    9·1 answer
  • For f(x) = 4x+1 and g(x)=x²-5, find (f-g)(x).
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!