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
Dahasolnce [82]
3 years ago
7

Use the given property to complete the statement

Mathematics
1 answer:
Serjik [45]3 years ago
5 0

The answer will be  A because 3x=-3

                                                     X= -1

You might be interested in
. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 5, what is the probability that a person
bulgar [2K]

Answer:

2.28% probability that a person selected at random will have an IQ of 110 or greater

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 100, \sigma = 5

What is the probability that a person selected at random will have an IQ of 110 or greater?

This is 1 subtracted by the pvalue of Z when X = 110. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{110 - 100}{5}

Z = 2

Z = 2 has a pvalue of 0.9772

1 - 0.9772 = 0.0228

2.28% probability that a person selected at random will have an IQ of 110 or greater

5 0
3 years ago
The triangles are similar.
erik [133]
5×4=20 , 12×4=48
53÷4 = 13 then
x=13
6 0
3 years ago
Read 2 more answers
Making coconut cookies. The recipe calls for 420 g of coconut and 120 g of sugar. Only has 252 g of coconut. How much sugar must
geniusboy [140]

Answer: 72 grams.

Step-by-step explanation:

Let be "s" the amount of sugar in grams that  must be used for 252 grams of coconut to keep the same ratio of coconut to sugar.

Knowing that in the recipe for the coconut cookies, should be 420 grams of coconut and 120 grams of sugar, and you only have 252 grams of coconut, you can set up this proportion to find "s":

\frac{420grams}{120grams}=\frac{252grams}{s}

Now, you need to solve for "s":

\frac{420grams}{120grams}=\frac{252grams}{s}\\\\s(\frac{420grams}{120grams})=252grams\\\\s=(252grams)(\frac{120grams}{420grams})\\\\s=72grams

4 0
3 years ago
Help me please!!!! The question is in the picture^^^
Aleksandr [31]

Answer:

7,173

x = 7

Step-by-step explanation:

Within the question it gives two examples.

x = 0 corresponds to 2000

x = 1 corresponds to 2001

If you pay close attention the x-value is always the same as the last digits in the year. So with 2007 the last digit is 7, which then leads us to determine that

x = 7

f (x) = -327 (7) + 9462

f (x) = -2289 + 9462 = 7173

6 0
3 years ago
The sum of 86,68, and 38 is 192. What do you also know about the sum
Andru [333]
The sum of these numbers is an even number and it is prime. 
Therefore it is not an odd number and is not a composite number.

8 0
3 years ago
Other questions:
  • Find the mean and median of these data:2,5,9,11,17,19
    8·2 answers
  • Cos x cos (-x) -sin x sin (-x) = 1. Verify the Identity. Please Show All Steps.
    15·1 answer
  • What is the answer to 1 1/3 • 1 1/2
    11·1 answer
  • The average reading speed of students completing a speed-reading course is 435 words per minute (wpm). If the standard deviation
    9·1 answer
  • What is 25.7692307692 rounded to?
    7·2 answers
  • Hank earns &12 per hour for babysitting. How much does he earn for 15 hours of babysitting?
    5·2 answers
  • Reid's Hardware discounts all riding lawnmowers 6% to customers paying in cash. If Trey paid $1,278.75 in cash for a riding lawn
    9·1 answer
  • What is the error? 1.5x-2=-2+1.5x <br><br> -2=2
    14·2 answers
  • Solve for x,y,z on the triangle
    15·2 answers
  • Help me on these please asap
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!