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
oksian1 [2.3K]
3 years ago
9

HELP ME PLEASE IT IS DUE TODAY I DON'T UNDERSTAND ANY OF THIS

Mathematics
2 answers:
natulia [17]3 years ago
4 0
I really hate math wish teachers would give us a break
Kryger [21]3 years ago
3 0

Answer:

first pic: A and C

second pic: i dont know for A, B = w + 1.4, C = 3y = 5.1, D = z + 1/3 = 1/2

third pic: a. 2x = 14.62 b. there are 2 x's on one side, and 1 number on the other, which can be taken as the answer to 2x. if we can do 2x = 14.62, we can do 14.62 divided by 2 to get the other number x, 14.62 divided by 2 = 7.31. c. i don't know

after this

Step-by-step explanation:

You might be interested in
At Burnt Mesa Pueblo, archaeological studies have used the method of tree-ring dating in an effort to determine when prehistoric
Zanzabum

Answer:

a) (1215, 1297)

b) (1174,  1338)

c) (1133, 1379)      

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 1256

Standard Deviation, σ = 41

Empirical Rule:

  • Also known as 68-95-99.7 rule.
  • It states that almost all the data lies within three standard deviation for a normal data.
  • About 68% of data lies within 1 standard deviation of mean.
  • About 95% of data lies within two standard deviation of mean.
  • About 99.7% of data lies within 3 standard deviation of mean.

a) range of years centered about the mean in which about 68% of the data lies

\mu \pm 1(\sigma)\\=1256 \pm 41\\=(1215, 1297)

68% of data will be found between 1215 years and 1297 years.

b) range of years centered about the mean in which about 95% of the data lies

\mu \pm 2(\sigma)\\=1256 \pm 2(41)\\=1256 \pm 82\\=(1174, 1338)

95% of data will be found between 1174 years and 1338 years.

c) range of years centered about the mean in which about all of the data lies

\mu \pm 3(\sigma)\\=1256 \pm 3(41)\\=1256 \pm 123\\=(1133, 1379)

All of data will be found between 1133 years and 1379 years.

3 0
3 years ago
The age of a boy is twice that of his sister. five years ago the boy was 3 times the age of his sister. How old is the boy
joja [24]

<em>Answer</em><em>:</em>

<h2><em>2</em><em>0</em><em> </em><em>years</em><em> </em><em>old</em><em>.</em></h2>

<em>Sol</em><em>ution</em><em>,</em>

<em>Let</em><em> </em><em>the</em><em> </em><em>age</em><em> </em><em>of</em><em> </em><em>sister</em><em> </em><em>be</em><em> </em><em>X</em>

<em>Let</em><em> </em><em>the</em><em> </em><em>age</em><em> </em><em>of</em><em> </em><em>boy</em><em> </em><em>be </em><em>2</em><em>x</em>

<em>Now</em><em>,</em>

<em>Five</em><em> </em><em>years</em><em> </em><em>ago</em><em>,</em>

<em>3(x - 5) = 2x - 5 \\ or \: 3x - 15 = 2x - 5 \\ or \: 3x - 2x =  - 5 + 15 \\ x = 10</em>

<em>Again</em><em>,</em>

<em>Repla</em><em>cing</em><em> </em><em>value</em><em>,</em>

<em>age \: of \: boy = 2x \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 2 \times 10 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 20</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em>

7 0
3 years ago
I shared 3 cars with my cousins I have 5 cousins and me. I want to know how many people will be in each car
tatuchka [14]

there will be 2 people in each car

5 0
3 years ago
Carolyn is planning a community garden she would like the length of the garden to be 4 feet more than its width. Carolyn wants t
SCORPION-xisa [38]

Let's make the width 'x'.

And the length 'x+4'.

Perimeter is adding up ALL the sides.

Add: x + x + 4 + x + x + 4.

Simplify:

x + x + 4 + x + x + 4 = 4x + 8

4 0
3 years ago
Joshua spends 25 minutes of each day reading.Let d be the number of days that he reads and let m represent the total minutes of
snow_tiger [21]
The independent variable is the days he spends reading because nothing we have can determine that. However the dependent variable is the total minutes of reading because it relies on the independent variable to figure out. You can't find the total minutes without knowing the days he spends. The equation sould be d times the amount he reads per day =m
4 0
3 years ago
Other questions:
  • ralph earns $72,000 annually as an architect and is paid semimonthly. alice also ers $72,000 but she is paid biweekly. how many
    13·1 answer
  • Need help with a math question
    7·1 answer
  • What's the area of the circle with the diameter of 8
    9·1 answer
  • What is the solution to the equation 3(2x+5) - 3x+4x7<br> x-1<br> x=4<br> x-5<br> 0 - 15
    8·2 answers
  • Gwen has a £5 note and a £2 coin. A litre of cola costs £1.25. Gwen buys as many litre bottles of cola as she can. How much mone
    6·1 answer
  • John bought candy for $4.50 per pound.He spent a total of $36.00.How many pounds of candy did he buy?
    11·1 answer
  • 16 points + BRAINLIEST if your answer is correct!
    14·1 answer
  • I really need help!!!! i need answer to c:
    15·2 answers
  • Compute the fare without tip: 4 passengers, 20 miles.
    15·1 answer
  • Ali completed 1/3 of her homework on Friday and 1/4 of her homework on Saturday. She told her mother she is almost done. Is she
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!