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
blsea [12.9K]
3 years ago
14

Hi! Can anybody help me with these problems? I have to do 2 step equations.

Mathematics
2 answers:
Dovator [93]3 years ago
6 0
1) 3.8x + 5.2x - 6.7 = 11.3
9x = 11.3 + 6.7
9x = 18
x = 18/9
x = 2

2) 7.8y - 4.9 - 5.4y = 2.3
2.4y = 7.2
y = 7.2/2.4
y = 3

3)

\frac{2}{3} x - 5 = 1
\frac{2}{3} x = 5 + 1
\frac{2}{3} x = 6

Multiply by 3 by both sides:

3 \times \frac{2}{3} x = 3 \times 6

Simplify:

2x = 18
x = 18/2
x = 9

4)

\frac{7}{5} y = 3 - \frac{1}{5}

Do lowest common denominator:

\frac{7}{5} y = \frac{(5 \times 3) - 1}{5}
\frac{7}{5} y = \frac{15 - 1}{5}
\frac{7}{5} y = \frac{14}{5}

Simplify by 5 by both sides:

7y = 14
y = \frac{14}{7}
y = 2
zzz [600]3 years ago
4 0

Answer:


Step-by-step explanation:

for question number one you want to first combine like terms:

  1.   9x-6.7=11.3  
  2. 9x=18
  3. x=2

for number 2 you should teh smame:

  1. 2.4y-4.9=2.3
  2. 2.4y=7.2

so as long as you combine like terms then proceed to solve you should get the right answers

                                               

   

You might be interested in
Can someone please answer this math problem and show your working
Jobisdone [24]
X=7 so that means replace all the x values with 7
7^3+5(3)= the answer solve it
7 square 3 + 5 times 3 equal

6 0
3 years ago
Find the vertex of an angle of an isosceles triangle if one base angle is 8 less than half the vertex?
skad [1K]
Vertex angle = x
1 base angle = 1/2x - 8

180-x = (1/2x-8)x2
180-x = x-16
196-x = x
196 = 2x
x=98

If you want explanation please ask me .
8 0
2 years ago
Each pair of figure is similar. Find the missing length
ExtremeBDS [4]

can you give more detail?

7 0
2 years ago
Read 2 more answers
A circle has a radius of 3 cm. How does the circumference of the circle compare to the area? Drag and drop a phrase to correctly
Lilit [14]
The circumference is about 3.14 (\pi) times bigger than twice the radius.  Mathematically, this can be writted as C = 2 \pi r, where C equals the circumference and r equals the radius, or C = \pi d where C equals the circumference and d equals the radius.  
3 0
3 years ago
If I have a circle with a raduis of 2 and I want to increase the raduis to 16, what is the scale factor?
Nana76 [90]

Answer:

8

Step-by-step explanation:

2 * 8 = 16

5 0
3 years ago
Other questions:
  • A sales representative was paid a base salary of $77 per week. He was also paid a commission of 11 percent on everything he sold
    14·1 answer
  • What is the word phrase for this algebraic expression z/8-9
    15·1 answer
  • leora mows lawns in her neighborhood the graph shows how much she earns. how much does she earn after five hours of mowing lawns
    13·1 answer
  • I need help please?!!!!!!!!
    15·1 answer
  • a rectangular park has an area of 2/3 square miles the length of the park is 2 and 2/3 the width of the park what is the Widht o
    5·1 answer
  • Can someone plz help me solved this problem I need help plz help me! Will mark you as brainiest!
    8·1 answer
  • Whats the unit rate of 4 and 3/4
    15·1 answer
  • Find <img src="https://tex.z-dn.net/?f=cos%5E%7B-1%7D%283pi%2F4%29" id="TexFormula1" title="cos^{-1}(3pi/4)" alt="cos^{-1}(3pi/4
    8·1 answer
  • I giveeeeee brainlilst
    9·1 answer
  • NEED HELP ASAP<br> Solve 4 – x = –8.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!