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
Serga [27]
3 years ago
14

Help me please I need an an answer asap

Mathematics
1 answer:
Dovator [93]3 years ago
8 0
7B + 4 = 7B - 3
We need to solve for B
Let's add 3 in both sides:

7B + 4 = 7B - 3
7B + 4 + 3 = 7B - 3 + 3
7B + 7 = 7B

Let's subtract 7B from both sides:
7B + 7 = 7B
7B - 7B + 7 = 7B - 7B
7 = 0

7 = 0, which is impossible. 7 can never be 0, and 0 can never be 7.
So the equation have no solution.
You might be interested in
If you buy six pens and one mechanical pencil, you'll get only $1 change from your $10 bill. but if you buy four pens and two me
xxTIMURxx [149]

Let p be the prize of a pen and m the prize of a mechanical pencils. If you buy six pens and one mechanical pencil, you spend 6p+m. We know that this equals 9, because you get 1$ change from a 10$ bill.

Similarly, if you buy four pens and two mechanical pencils, you spend 4p+2m, which is 8$, because now you get a $2 change. Put these equation together in a system:

\begin{cases} 6p+m=9\\4p+2m=8\end{cases}

Now, if you multiply the first equation by 2, the system becomes

\begin{cases} 12p+2m=18\\4p+2m=8\end{cases}

Subtract the second equation from the first:

12p+2m - (4p+2m) = 18-8 \iff 8p = 10 \iff p = \dfrac{10}{8} = 1.25

Plug this value into the first equation to get

6p+m=9 \iff 6\cdot 1.25 +m = 9 \iff 7.5 +m=9 \iff m = 9-7.5 = 1.5

7 0
3 years ago
Josie is picking out wallpaper for a 9 feet by 10 feet accent wall in her new apartment. She has narrowed her choices down to th
elena55 [62]

Answer:

Josie should purchase floral daisy wallpaper.

Step-by-step explanation:

Area = Length × Width

The area of the Josie's accent wall = 9 × 10 = 90 feet²

The cost of Floral Daisy per square feet =\frac{\text{Area of the wallpaper}}{price}

                                                                    = \frac{(1.475\times 9.8)}{14.67}

                                                                    = \frac{14.455}{14.67}

                                                                    = 0.98534 ≈ $0.99/ft²

The cost of total wallpaper for the wall = 90 × 0.99 = $89.10

The cost of Flower Power per square feet = \frac{(8.33\times 12)}{99}

                                                                      = \frac{99.96}{99}

                                                                      = 1.0096 ≈ $1.01/ft²

The cost of total wallpaper for the wall = 90 × 1.01 = $90.90

total savings = 90.90 - 89.10 = $1.80

∵ The floral daisy wallpaper comes in size = 1.45 ft × 9.8 ft

∴ Josie needs the number of rolls of floral daisy wallpaper to cover her wall = 7

The cost of 7 rolls = 14.67 × 7 = $102.69

To cover her wall with flower power wallpaper, she needs the number of rolls = 2

The cost of 2 rolls = 99 × 2 = $198

We can see the cost of floral daisy wallpaper is less than flower power.

Therefore, Josie should purchase floral daisy wallpaper.

8 0
3 years ago
Which number is a factor of 12, but not a multiple of 6?
BlackZzzverrR [31]
4
4*3 is 12 but 4 is not a multiple of 6 

6 0
3 years ago
Read 2 more answers
Juan has 2 liters of juice. He drinks 0.21 liter of juice every day. For how many days will the juice last?
bixtya [17]

Answer:

9 days

Step-by-step explanation:

2 / .21 =  9.52380952 then round up to get 9.

7 0
3 years ago
What is 12 divided by 8
Alina [70]

Answer:

1.5

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • 47 is the result when 12 and x are added. What is the value of x? Enter your answer in the box as a fraction in simplest form.
    12·2 answers
  • MY MOM IS GOING TO SLAP ME IF I FAIL- PLEASE HELP
    13·2 answers
  • 2x + 3y = 10
    8·2 answers
  • What is the equation of this line that models the data on the graph?<br> A. y= x/3 + 2<br> B. y=3x+2
    13·1 answer
  • Kinda want to cry right now.. Someone PLEASE help me.. I know there is someone out there smart enough.... 25 points and Brainlie
    8·1 answer
  • A typical lap around a track in the United States has length of 440 yards. How many lap would need to be complete to run a mile?
    15·1 answer
  • Select the correct answer.
    15·2 answers
  • Using your equation from #2, how many hours did the plumber work at your home? Solve the equation from #2
    6·2 answers
  • What does n mean in -10(n-5)=40
    5·2 answers
  • 4 SPARSE BAYESIAN LEARNING
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!