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
madam [21]
3 years ago
8

Help me plzzz will give brainlest!!!!

Mathematics
1 answer:
Leno4ka [110]3 years ago
8 0

Answer:b,they are not proportional

Step-by-step explanation:

You might be interested in
Of the choices below, what is the best estimate of the speed of the milk van?
galben [10]

Answer:

A. 77 kilometers per hour

Step-by-step explanation:

Speeds of vehicles are normally calculated in kilometers per hour, meters per hour is too small the measurement and millimeters is even smaller.

7 0
2 years ago
An IQ test is designed so that the mean is 100 and the standard deviation is 1414 for the population of normal adults. Find the
Amanda [17]

Answer:

37

Step-by-step explanation:

The first thing is to calculate critical z factor

the alpha and the critical z score for a confidence level of 90% is calculated as follows:

two sided alpha = (100% - 90%) / 200 = 0.05

critical z factor for two sided alpha of .05 is calculated as follows:

critical z factor = z factor for (1 - .05) = z factor for (.95) which through the attached graph becomes:

critical z factor = 2.58

Now we have the following formula:

ME = z * (sd / sqrt (N) ^ (1/2))

where ME is the margin of error and is equal to 6, sd is the standard deviation which is 14 and the value of z is 2.58

N the sample size and we want to know it, replacing:

6 = 2.58 * (14 / (N) ^ (1/2))

solving for N we have:

N = (2.58 * 14/6) ^ 2

N = 36.24

Which means that the sample size was 37.

5 0
3 years ago
How do you solve it?
MatroZZZ [7]

Answer:

<em>i: </em>x=-2, x=1

<em>ii: </em>x=-1/2

Step-by-step explanation:

Quadratic form:

You solve <em>i </em>by using FOIL (First, Outside, Inside, Last) because it is a multiplication problem.

(x+2)(x-1)=0

<em>"first"</em> would be x*x, which would equal x^{2}

<em>"outside"</em> would be x*-1, which would equal -1x, or -x

<em>"inside"</em> would be 2*x, which would equal 2x

<em>"last" </em>would be 2*-1, which would equal -2

Now you need to combine the terms so that they are one after the other

x^{2}-x +2x-2

Combine like terms, and you should get:

x^{2} +x-2

i Solution

<em>You need to get the variable by itself.</em>

<em>Subtract two from both sides</em>

x+2=0\\x=-2

<em>Add one to both sides.</em>

x-1=0\\x=1

ii Solution

<em>Add all the terms.</em>

x+2+x-1=0\\2x+1=0\\2x=-1\\x=-\frac{1}{2}

8 0
3 years ago
5,698+12,326 is even number are odd number
Elden [556K]

Answer: Even

Step-by-step explanation:

Look at the ones place of each number, which in this case is 8 and 6.

8 + 6 = 14, which is an even number. This makes the sum of both numbers also an even number.

6 0
2 years ago
Read 2 more answers
Which of the following is a factor of 3x^3-12x?<br> 3x-4<br><br> x+2<br><br> x+3<br><br> x-4
VMariaS [17]

Answer:

x + 2

Step-by-step explanation:

3x^3 - 12x

=3x(x^2 - 4)

= 3x(x + 2)(x - 2)

so (x+2), (x - 2) and 3x are the factors of 3x^3 - 12x

answer:

x + 2

6 0
3 years ago
Read 2 more answers
Other questions:
  • The ratio of Holly's age to that her aunt is 4:9. When holly was born her aunt was 15 years old. How old is holly's aunt now?
    14·1 answer
  • What is the value of n?<br> 121 144
    7·1 answer
  • When finding the product (x – 3)(x + 4), what would you add to x(exponent of 2)-3x to get the final answer?
    10·1 answer
  • Darlene was asked to identify which of the following is prime 2,12,21,39
    15·2 answers
  • PLZ PLZ PLZ ANSWER THIS I HAVE NO IDEA WHAT RATIOS ARE!!!! <br> I WILL MARK THE BRAINLIEST!!!
    13·2 answers
  • Can someone help me and explain what to draw? I need this done ASAP
    10·1 answer
  • The weighted-average method is best used for
    10·1 answer
  • Write the equation of the line passing through the points (-2,8) and (-8,2).
    5·2 answers
  • What degree is an obtuse angle<br>​
    10·2 answers
  • Which unit rate is the lowest price per ounce? (5 points)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!