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
VARVARA [1.3K]
2 years ago
15

Solve the equation. 9 ( − 2 ) =

Mathematics
2 answers:
goldfiish [28.3K]2 years ago
5 0

Answer:

- 18

Step-by-step explanation:

9 ( - 2 )

= 9 x ( - 2 )

= - 18

Therefore, - 18 is the answer of the given equation.

Fantom [35]2 years ago
3 0

Answer:

-18

Step-by-step explanation:

the parentheses mean to multiply, so 9 times 2 is 18, but since it is a negative and a positive that you're multiplying, then it would be negative 18

You might be interested in
1)Why is it impossible for a function to have fewer values in its domain than in its range?
Aneli [31]

<u>Part (1):</u>

For a relation to be called a function, each input must have one and only one corresponding output.

Now, we know that the input of the relation is known as its domain while the output is known as its range.

Based on the above definition, each input (value from domain) has only one output (value from range)

Therefore, the values for domain and range are equal, otherwise, the relation won't be a function


<u>Part (2):</u>

The graph of the function is shown in the attached image.

<u>Now, a linear function:</u>

<u>1- is a straight line.</u> This means that it has neither curved nor sharped bends.

In the graph of the given function, we can see that it has a sharp bend at the point (5,0)

<u>2- has a constant slope all over the graph.</u>

Let's test this condition on our graph:

For the two points (0,5) and (1,4):

slope = \frac{4-5}{1-0} = -1

For the two points (6,1) and (7,2):

slope = \frac{2-1}{7-6} = 1

We can see that the slope is not constant along the whole graph.

Based on the above two conditions, the absolute function is not a linear function


<u>Part(3):</u>

<u>There are two types of proportionality:</u>

1- Direct proportionality: This means that as one value increases, the other would increase at the same rate

<u>Let's check this on the given function:</u>

f (x) = -3x

At x = 1 ..........> f (x) = -3(1) = -3

At x = 2 .........> f (x) = -3(2) = -6

We can note that the condition of direct proportionality is not fulfilled, therefore, the relation is <u>not showing direct proportionality</u>

2- Inverse proportionality: This means that as one value increases, the other would decrease by the same rate.

Inverse proportionality has the general formula: y = \frac{k}{x}

where k is the constant of proportionality.

The given function is: f (x) = -3x

We can note that it does not have the same format as the general formula of the inverse proportionality.

Therefore, the given<u> relation does not show inverse proportionality</u>

Based on the above, we can conclude that the given relation is non-proportional


<u>Part (4):</u>

The graphs are shown in the second attached image

<u>Let's check the givens:</u>

<u>1) y = 9</u>

We know that this would be a line parallel to the x-axis constant at y = 9

Therefore, this choice is correct

<u>2) -2x² + 4</u>

We know that the second degree polynomial gives a curve not a line.

Therefore, this choice is incorrect

<u>3) y = -8 + 3</u>

The general form of the linear line is y = mx + b

The given equation has the same format as the general one.

Therefore, this choice is correct

<u>4) y = 7/x</u>

Again, the general form of the linear line is y = mx + b

The given equation has the a different format than the general one.

Therefore, this choice is incorrect


Hope this helps :)

7 0
3 years ago
nA car dealer who sells only late-model luxury cars recently hired a new salesperson and believes that this salesperson is selli
7nadin3 [17]

Answer:

The value of an appropriate test statistic for the car dealer to use is -4.

Step-by-step explanation:

The null hypothesis is:

H_{0} = 4600

The alternate hypotesis is:

H_{1} < 4600

The test statistic is:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

In this problem:

X = 4100, \mu = 4600, \sigma = 500, n = 16

Then

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

t = \frac{4100 - 4600}{\frac{500}{\sqrt{16}}}

t = -4

The value of an appropriate test statistic for the car dealer to use is -4.

8 0
3 years ago
A
qaws [65]

Answer:

Anosh has 35 feathers.

Step-by-step explanation:

Initially, he had 0 feathers.

His father started his collection by giving him 7 feathers.

After his father gave him, he has 7 feathers.

Since then he has collected 28 more feathers. How many feathers does Anosh have?​

So now, he has 7 + 28 = 35 feathers.

Anosh has 35 feathers.

8 0
3 years ago
Use an algebraic equation to find the measure of each angle that is represented in terms of X
professor190 [17]

Answer:

16, 74

Step-by-step explanation:

3x +10 + 12x +50 = 90

15x + 60 = 90

15x = 90 -60

15x = 30

x = 30/15

x = 2

3x + 10 = 3*2 +10 = 6 +10 = 16

12x + 50 = 12*2 +50 = 24 + 50 = 74

5 0
3 years ago
"Seven subtracted from the product of a number and 4 is -59."
xenn [34]

Answer:

the unknown number is -13

Step-by-step explanation:

4n -7 = -59

4n = -59 +7

n= -52 /4

n = -13

3 0
3 years ago
Other questions:
  • The number of bacteria in a Petri dish increases by 19% every hour. If there were initially 300 bacteria placed in the Petri dis
    14·1 answer
  • What is the inequality to 8 less a number is less than or equal to 17
    15·1 answer
  • 6 47/75 as a percentage
    10·1 answer
  • Jenny walked 2.5 miles in 50 minutes . At this rate , how many minutes did it take her to walk 1 mile ?
    6·2 answers
  • Which of these number is irrational?<br><br> a) 9.6<br> b) √45 <br> c) 3/8<br> d) 3.4 x 10 ⁵
    12·2 answers
  • Which sign makes the statement true?<br><br><br> 63% 27/48<br><br> &gt; &lt; =
    11·2 answers
  • NEED HELP.
    6·2 answers
  • 4x-2y+3z= 23<br> X+ 5y - 3z -37<br> - 2x+y+4z = 27
    10·1 answer
  • Transform the following linear equation to the "Aha" line. Give a brief explanation as to what kind of solution(s) you expect th
    5·1 answer
  • Which property is shown by -6+0=-6?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!