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
enot [183]
2 years ago
7

Sorry if this is a lot. It’s true of false.

Mathematics
1 answer:
Firlakuza [10]2 years ago
7 0

1. false 2. true 3. true 4.false

Step-by-step explanation:

You might be interested in
Evaluate this fraction 7 2/3 x 10 1/2
Slav-nsk [51]
The answer is 34 1/2
6 0
3 years ago
Ivan wants to ship a box that is 6 in. Tall, 4 in. Wide, and 5 in. Long to his cousin, and used the calculation below. What was
RUDIKE [14]

Answer:

the correct volume is 120in.3

Step-by-step explanation:

he did his math wrong, 20 x 6 is not 26.

V = 5 x 4 x 6 = 20 x 6 = 120

4 0
3 years ago
Read 2 more answers
Nick's bank account balance was $21. if he writes a check for $30 and his bank charges him $35 for overdrawing his account, find
natulia [17]
It is saying that the Balance was 21 if he wrote a check for 30 and The bank was charging him $35 for overdrawing his account of basically you’re gonna just Add so 21+30+35 is 86
4 0
3 years ago
Read 2 more answers
An environmental group conducted a study to determine whether crows in a certain region were ingesting food containing unhealthy
nydimaria [60]

Part A

Given info:

  • xbar = sample mean = 4.90 ppm
  • s = sample standard deviation = 1.12 ppm
  • n = 23 = sample size

Because n > 30 is not true, and we don't know the population standard deviation (sigma), this means we must use a T distribution.

The degrees of freedom here are n-1 = 23-1 = 22.

At 90% confidence and the degrees of freedom mentioned, the t critical value is roughly t = 1.717

Use a T distribution table or calculator to determine this. If you don't have a calculator for the task, then you can search out "inverse T calculator" and there are tons of free options to pick from.

The margin of error E is

E = t*s/sqrt(n)

E = 1.717*1.12/sqrt(23)

E = 0.400982

This is approximate and accurate to 6 decimal places.

The confidence interval is going to be xbar plus or minus that E value

L = lower bound = xbar - E = 4.90 - 0.400982 = 4.499018 = 4.50

U = upper bound = xbar + E = 4.90 + 0.400982 = 5.300982 = 5.30

The confidence interval in the format of (L, U) is (4.50, 5.30)

You could also express it as the format L < mu < U and it would be 4.50 < mu < 5.30; however, I'll stick to the first method.

<h3>Answer:  (4.50, 5.30)</h3>

=====================================================

Part B

Since we know sigma = 2.6 is the population standard deviation, we can use a Z distribution now.

At 90% confidence, the z critical value is roughly 1.645; use a table or calculator to determine this.

n = \left(\frac{z*\sigma}{E}\right)^2\\\\n \approx \left(\frac{1.645*2.6}{0.03}\right)^2\\\\n \approx 20325.254444 \\\\

Round this up to the nearest integer to get 20326. For min sample size problems, <u>always</u> round up.

<h3>Answer: 20326</h3>
6 0
2 years ago
When f(x) = 0.5|x is graphed on a regular coordinate grid, the graph forms
PtichkaEL [24]

Answer:

A. Right angle  -- if you multiply the slopes of 2 intersecting lines and you "-1" then the lines are perpendicular - in this case the line in quadrant 3 has a slope of "1" and the line in quadrant 4 has a slope of "-1", hence their product is "-1" and the angles formed at the intersection of the lines are right angles.

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • The difference between 7 and -15 the translation is
    13·2 answers
  • Pentagon PQRST and its reflection, pentagon P'Q'R'S'T', are shown in the coordinate plane below:
    12·2 answers
  • The length of a rectangle is 5 inches shorter than the width. What is the width of the rectangle if the perimeter is 48 inches?
    5·1 answer
  • Last week ,Taylor spent 3 hours practicing football . Robin practiced 2 1/2 times as much as Taylor. Robin wants to know how man
    15·1 answer
  • Tony is building a new silo to store corn as animal feed. It will be a cylinder topped with a half-sphere, and must store 21 000
    15·1 answer
  • Pls solve this for me :(
    13·1 answer
  • (Please help ASAP 16 points! Thanks in advance!) solve -2a - 5 &gt; 3
    8·1 answer
  • 3. Find x.<br> 8x - 37<br> 5x + 17
    9·2 answers
  • Explain why the graph may have values for years that are still in the future
    6·1 answer
  • Complete the solution of the equation. Find th<br> value of y when x equals -8.<br> -x - 4y = 16
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!