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
vodomira [7]
3 years ago
14

Treys test score average decreased by 14 points this semester. Write a signed number to represent this change in average.

Mathematics
1 answer:
larisa [96]3 years ago
5 0

Answer:

-14

Step-by-step explanation:

Given: Trey's test score average decreased by 14 points this semester.

To find: a signed number to represent this change in average.

Solution:

The decrease can be denoted by minus (-) sign and increase can be denoted by plus (+) sign.

So, a signed number to represent the change in test score average is -14

You might be interested in
What expression represents the quotient?
Olenka [21]

Answer:

C

Step-by-step explanation:

Given

\frac{5x^2+8x+7}{4x}

Divide each term on the numerator by 4x

= \frac{5x^2}{4x} + \frac{8x}{4x} + \frac{7}{4x}

= \frac{5x}{4} + 2 + \frac{7}{4x}

8 0
3 years ago
If p is the smallest of four consecutive even integers what is their sum interms of p. ​
ikadub [295]

Answer:

4p + 12

Step-by-step explanation:

p + p+2 + p+4 + p+6 = 4p + 12

4 0
3 years ago
. At a clothing store, 12 people purchased blue sweaters, 8 purchased green sweaters, 4 purchased gray sweaters, and 7 purchased
DedPeter [7]

Answer:

The probability that they purchased a green or a gray sweater is \frac{12}{31}

Step-by-step explanation:

Probability is the greater or lesser possibility of a certain event occurring. In other words, probability establishes a relationship between the number of favorable events and the total number of possible events. Then, the probability of any event A is defined as the quotient between the number of favorable cases (number of cases in which event A may or may not occur) and the total number of possible cases. This is called Laplace's Law.

P(A)=\frac{number of favorable cases}{number of possible cases}

The addition rule is used when you want to know the probability that 2 or more events will occur. The addition rule or addition rule states that if we have an event A and an event B, the probability of event A or event B occurring is calculated as follows:

P(A∪B)= P(A) + P(B) - P(A∩B)

Where:

P (A): probability of event A occurring.

P (B): probability that event B occurs.

P (A⋃B): probability that event A or event B occurs.

P (A⋂B): probability of event A and event B occurring at the same time.

Mutually exclusive events are things that cannot happen at the same time. Then P (A⋂B) = 0. So, P(A∪B)= P(A) + P(B)

In this case, being:

  • P(A)= the probability that they purchased a green sweater
  • P(B)= the probability that they purchased a gray sweater
  • Mutually exclusive events

You know:

  • 8 purchased green sweaters
  • 4 purchased gray sweaters
  • number of possible cases= 12 + 8 + 4+ 7= 21

So:

  • P(A)=\frac{8}{31}
  • P(B)=\frac{4}{31}
  • P(A⋂B) = 0

Then:

P(A∪B)= P(A) + P(B)

P(A∪B)= \frac{8}{31}+ \frac{4}{31}

P(A∪B)= \frac{12}{31}

<u><em>The probability that they purchased a green or a gray sweater is </em></u>\frac{12}{31}<u><em></em></u>

5 0
3 years ago
Which function family are these 3? thanks..​
Julli [10]

Answer:

1) Function; Linear Function (y=x)

2) Function; Exponential Function (y=bˣ)

3) Not a function.

Step-by-step explanation:

So, let's go through each table of values. I'm also going to graph them (see attached graphs) because it will make things simpler and provide a visual.

First, also recall what the definition of a function is. A function is a function if and only if an x only has <em>one</em> distinct y-value. No x can have two or more y-values. For instance, (1,2) and (1,3) is <em>not</em> a function between the x repeats. So, let's go through the choices:

1)

We have the table as shown. Let's plot the points. See TABLE 1:

First, there are no repeating x-values, so we can be sure that this is indeed a function.

Looking at the graph, we can see that this resembles a linear graph. So, the parent function of this is a line.

The parent function of a line is:

y=x

So, table 1 is associated with a linear function.

2)

Let's again plot the points. See TABLE 2.

Again, there are no repeating x-values, so this is also a function.

Looking at the graph, this resembles an exponential function. The function increases slowly at first but starts increasing increasingly fast. The parent function is thus an exponential function.

So, table 2 is associated with an exponential function.

3)

First, notice how all the x-coordinates are repeating. And since they do <em>not</em> equal the same thing, this is not a function.

Table 3 is not a function and so has no corresponding family function.

7 0
3 years ago
Read 2 more answers
What is 87.252 ÷ 2.2
kicyunya [14]
39.66 is the answer to the problem
4 0
3 years ago
Read 2 more answers
Other questions:
  • Could someone explain to me what is the process
    14·2 answers
  • What is the distance rounded to the nearest tenth, between the points (0, 5) and (8, 0)?
    14·2 answers
  • Which size ice cream dessert gives you the best price per ounce? Small 6-oz for $2.49. Medium 10-oz cup for $3.49. Large 16-oz c
    13·1 answer
  • Find the missing probability in the table below.<br> A. 0.25<br> B. 0.75<br> C. 0.15<br> D. 0.85
    6·2 answers
  • Which expression is equivalent to 5^3 select all that apply
    14·1 answer
  • The heights of all adult males in Croatia are approximately normally distributed with a mean of 180 cm and a standard deviation
    8·1 answer
  •  
    13·2 answers
  • A square has a side lenght of 6.2 centimeters. what is the perimiter of the square
    11·2 answers
  • compared to last year, the population of Boom Town has increased by 10%. The population is now 6,600. What was the population la
    14·2 answers
  • Triangle JJJ is shown below. James drew a scaled version of Triangle JJJ using a scale factor of 444 and labeled it Triangle KKK
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!