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
Katarina [22]
3 years ago
15

Please help me understand this, i've been stuck on this question

Mathematics
1 answer:
Drupady [299]3 years ago
4 0
A is correct.
to find the average, you add up all three test scores, divide the sum by 3
85≤(83+91+n)/3≤90

multiply 3 to eliminate the fraction: 255≤(174+n)≤270
subtract 174: 81≤n≤96
You might be interested in
The sail on a souvenir boat is similar in shape to the sail on a sailboat. The sail on the sailboat is in the shape of a right t
Triss [41]

Answer:

1 1/8 inches.

Step-by-step explanation:

As the sails are similar,  corresponding sides are in the same ratio, so we have the equation

:24/3 = 9/b     where  b = base of the souvenir boat.

Cross multiply:

24b = 9*3

b = 27/24

= 1 1/8 inches.

3 0
3 years ago
2. LUIS WANTS TO BUY 2 PENCILS AND 1 NOTEBOOK IN THE STORE. EACH PENCIL COSTS $2 AND THE NOTEBOOK COSTS $6. HOW MUCH MONEY DID L
navik [9.2K]

Answer:

Luis spent $10 in total

2×2=4 6×1=6 6+4=10

Step-by-step explanation:

4 0
3 years ago
The point of concurrency of the three medians of a triangle is called the ______ of the triangle.
SIZIF [17.4K]
<span>The point of concurrency of the three medians of a triangle is called the orthocenter of the triangle.</span>
3 0
3 years ago
How do I complete this formal check?
postnew [5]
IDK sorry I need points
8 0
3 years ago
14. Use the given degree of confidence and Sample data to construct a confidence interval for the population mean. Assume that t
nirvana33 [79]

Step-by-step explanation:

Confidence interval = mean ± margin of error

CI = μ ± ME

The mean is μ = 8.7.

Margin of error = critical value × standard error

ME = CV × SE

At 95% confidence and 9 degrees of freedom, CV = 2.262.

SE = s / √n

SE = 3.3 / √10

SE = 1.04

The margin of error is:

ME = 2.262 × 1.04

ME = 2.36

CI = 8.7 ± 2.36

CI = (6.34, 11.06)

7 0
4 years ago
Other questions:
  • Determine the total number of roots of each polynomial function using the factored form. f (x) = (x + 5)3(x - 9)(x + 1)
    6·2 answers
  • A catering company charges $300 plus $40 per guest for a wedding. Sarah and Eric do not want to spend more than $5,000 on cateri
    5·2 answers
  • What is the ratio 7 to 12 as a fraction in simplest form?
    5·1 answer
  • What is the quotient?<br>36÷6<br>A - 30<br>B –6<br>C 30​
    14·2 answers
  • What is the fraction as a decimal?<br> 2<br> -0.015<br> -0.15<br> -0.15<br> -0.15
    11·1 answer
  • some friends decided to equally split the cost of the apples to make applesauce. the expression 18b/5 represents how much money
    10·2 answers
  • ( 4.04 x 10^8) + ( 7 x 10*9 )
    9·1 answer
  • Find the profit obtain by a trader by selling 50 mangoes each Rs 12.00 which bought at the price of Rs. 8 each .
    6·1 answer
  • 4x + y s8<br> yz - 4x - 1
    7·1 answer
  • What is the slope of the line through (-7,-7) and (-6,7)?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!