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
cricket20 [7]
3 years ago
12

In the solution of the equation 5 + 3x = -2x + 9, 2x is added to the equation first. Which of the following should be done next?

Mathematics
1 answer:
puteri [66]3 years ago
5 0

You should subtract 5 from both sides next.


Adding 2x to both side will give you the following.


5 + 5x = 9


And since you got all the variable terms to the left, you want all the constant terms to the right. You do that by subtracting 5 from both sides. This gives you the below statement.


5x = 4


You can then divide to solve.


x = 4/5 or .8

You might be interested in
What is the value of m in the figure below in this diagram abd bcd
oee [108]

\triangle BCA\ \text{and}\ \triangle DCB\ \text{are similar (AAA). Therefore the sides are in proportion:}\\\\\dfrac{BC}{CD}=\dfrac{AC}{BC}\\\\\text{We have}\\\\BC=m\\CD=7\\AC=7+11=18\\\\\text{Substitute:}\\\\\dfrac{m}{7}=\dfrac{18}{m}\qquad\text{cross multiply}\\\\m^2=(7)(18)\\\\m^2=126\to\boxed{m=\sqrt{126}}\to\boxed{A.}

6 0
3 years ago
9.50 One way to evaluate the effectiveness of a teaching assistant is to examine the scores achieved by his or her students on a
EleoNora [17]

Answer:

Step-by-step explanation:

Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.

H_0: s^2 = 300\\H_a: s^2 \neq 300

(Two tailed test for variance )

Sample variance =480

We can use chi square test for testing of hypothesis

Test statistic = \frac{(n-1)s^2}{\sigma^2} \\=62.4

p value = 0.0100

Since p <0.05 our significance level, we reject H0.

The sample variance cannot be claimed as equal to 300.

5 0
3 years ago
Which fractions are equivalent to 15/20
Digiron [165]

Answer:

\frac{3}{4}, \frac{30}{40}, \frac{45}{60}, \frac{60}{80}....e.t.c are all equivalent fractions

Step-by-step explanation:

For the answer you need to know bout equivalent fractions

TO find equivalent fractions you have to multiply the numerator and denominator by the same amount

E.x.\frac{15}{20}=\frac{(15)(2)}{(20)(2)} =\frac{30}{40}

Therefore \frac{30}{40} is an equivalent fraction

8 0
3 years ago
Please somebody help need an answer
levacccp [35]
6= 4(z+9)/y+2
6y +12 =4(z+9)
6y=4(z+9) -12
y=(4(z+9)-12)/6
y=2z+18-6/3
y=2z+12 /3
4 0
3 years ago
Please answer this as soon as possible.
Vlad [161]
I’m pretty sure it’s b
7 0
3 years ago
Other questions:
  • Which expression is equivalent to a4⋅b2⋅a‐4⋅b4?
    9·1 answer
  • explain how you can use a box-and-whisker plot to find the range of a data set. a. the range is the difference of the values of
    5·1 answer
  • How to use the proper formula
    13·2 answers
  • Which of these is an example of a non-random sample?
    6·1 answer
  • A tree was 8 feet tall when it was planted. After 5 years, it was 18 feet tall. What was the tree’s growth rate?
    15·2 answers
  • If you are adding two fractions that are both greater than 1/2 what must be true about the sum?
    6·2 answers
  • Please please answer this for me, its super urgent and important !!! please.
    9·1 answer
  • Christopher has 100 flavored donuts to sell. Each flavored donut is covered with one topping. How many flavored donuts are cover
    15·1 answer
  • PLEASE HELP ITS EASY MATH AND FIRST ONE WHOS CORRECT WILL GET BRAINLIST
    7·2 answers
  • How many sides does a regular polygon have if each of its interior angles is 140 degrees?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!