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
Alex_Xolod [135]
3 years ago
7

Solve the problem.

Mathematics
1 answer:
Bingel [31]3 years ago
4 0
A would be the answer
You might be interested in
The standard IQ test has a mean of 102 and a standard deviation of 13. We want to be 98% certain that that we are within 5 IQ po
aleksklad [387]

Answer:

37

Step-by-step explanation:

Margin of error = critical value × standard error

For 98% confidence, CV = 2.326 (from t table).

Standard error is σ / √n, where σ is the population standard deviation, and n is the sample size.

Plugging in:

5 = 2.326 × 13 / √n

n = 36.6

Rounding up, n = 37.

5 0
4 years ago
Pls help meh
san4es73 [151]

Answer:

7.1 (7.06 rounded to the tenth)

Step-by-step explanation:

The formula for Area of a Circle is: π·r²

R = Radius

π = pi, or 3.14

As long as you know the formula, this is easy!

In class, you may have already been told that the radius is <em>half </em>of the diameter.

1. Half of 3 ft is 1.5 ft.

2. Plug 1.5 in for r, in your calculator

3. Do the calculation, and you should come out to get 7.06858347058

4. Round it!

Finding area for a circle is satisfying, isn't it? xD

5 0
3 years ago
Casandra rents a life jacket for a one-time fee of $5. she then rents a boat for $25 per day. write an expression represents the
qaws [65]

Answer:

it would be something along the lines of. 5+25d =c

4 0
2 years ago
if you’re good with set theory in math 30 please help with questions 31 and 32!! real answers only !!
GREYUIT [131]

Answer:  31) d     32) c

<u>Step-by-step explanation:</u>

31)

A = {1, 3, 5, 15}

B = {2, 3, 5, 7}

A ∪ B = {1, 2, 3, 5, 7, 15}

C = {2, 4, 6, 8}

(A ∪ B) ∩ C = {1, 2, 3, 5, 7, 15} ∩ {2, 4, 6, 8} = {2}

<em>2 is the only number in both sets</em>

32)

The pattern is: reflection, add symbol, ..., reflection, add symbol.

The last image shown is: add symbol

So the next image will be: reflection (flipped to the left)

7 0
3 years ago
50 points<br> What is the value of X in the triangle below? I need an explain and all work shown.
BARSIC [14]
The answer is C. Why? well, you should know SOH-CAH-TOA. IN THIS CASE YOU WILL USE SOH. SINE OVER HYPOTENUSE. THEN YOU SUBSTITUTE. SIN 45°= OPPOSITE/HYPOTENUSE. SIN45°=X/13 WHICH GIVES U CHOICE C.
3 0
4 years ago
Read 2 more answers
Other questions:
  • Please please help me with these 2 questions
    8·1 answer
  • What is the answer if you factor completely
    12·1 answer
  • In a town, 30% of the households own a dog, 20% own a cat, and 10% own both a dog and a cat. If we select a household at random,
    10·2 answers
  • your drawer contains 6 black socks and 8 white socks. what is the probability that both socks are black
    9·1 answer
  • Use the diagram of circle C to answer the question.
    14·1 answer
  • Last month a factory produced 880 television sets. This month the the same factory produced 1210 television sets. The increase i
    10·1 answer
  • 35 points!!! Which is the general form of the equation of the circle shown?
    10·2 answers
  • PLEASE HELP ASAP 20 POINTS
    11·2 answers
  • Jeff bought 7 pounds of chocolate<br>and spent $8.89. How much is one<br>pound of chocolate?​
    6·2 answers
  • Lines 76-79 in Passage 2 ("The edifying . . .
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!