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
Luba_88 [7]
3 years ago
8

Martin solved an equation, as shown below: Step 1: 19v = 76 Step 2: v = 76 - 19 Step 3: v =57 Part A: Is Martin's answer correct

or incorrect? If it is incorrect, explain why it is incorrect and show the correct steps to solve the equation. (6 points) Part B: How many solutions will this equation have? (4 points)
Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
4 0

Answer:

A. incorrect. He has to divide 76 by 19, instead of subtract 19 to 76.

B. This equation has one solution. v=4

Step-by-step explanation:

Hi, Martin’s answer is incorrect.

A. He has to divide 76 by 19, instead of subtract 19 to 76.

The correct steps are:

19v = 76  

Since 19 is multiplying the variable, to eliminate it we have to divide by 19.

v = 76/19

v = 4

B. This equation has one solution. It’s v=4

Feel free to ask for more if needed or if you did not understand something.

You might be interested in
Last year, Nahla opened an investment account with $5400. At the end of the year, the amount in the account had increased by 7.5
Inga [223]

Answer:

Step-by-step explanation:

7.5% would be 405. Honestly to find it quickly, i took 10% of 5400,which is 540 and divided that by 4 to get 135 and multiply that by 3 to get 7.5%, which is 405 increase. to get the money total add 405 to 5400 to get 5805

4 0
3 years ago
Sid starts with savings of £13
MAVERICK [17]

Answer:

The savings of Sid and Tim will be in 17:9 in 6 weeks.

Step-by-step explanation:

Initial savings of Sid = £ 13

Initial savings of Tim = £ 0

For each successive week Sid saved = £ 3.5

For each successive week Tim saved = £ 3

Let us assume that after "x weeks" the amounts of Sid and Tim are in ratio 17:9.

If Sid saves £ 3.5 in one week, in x weeks he will £ 3.5x. Since he had £ 13 initially, total amount he would have in x weeks will be £ (13 + 3.5x)

If Time saves £ 3 one week, in x weeks he will save £ 3x. Since, he didn't have any money initially, in x weeks he would have saved £ 3x

The ratio of their savings in x weeks would be 17:9

So,

Sid's saving : Tim's saving = 17 : 9

Using the values of expressions, we get:

13+3.5x:3x=17:9\\\\\frac{13+3.5x}{3x}=\frac{17}{9}\\\\ 9(13+3.5x)=17(3x)\\\\ 117+31.5x=51x\\\\ 117=51x-31.5x\\\\ 117=19.5x\\\\ x=\frac{117}{19.5}\\\\ x=6

This means, the savings of Sid and Tim will be in 17:9 in 6 weeks.

5 0
3 years ago
Consider the function below.
vovangra [49]
An inverse function reverses (x, f(x)) to make it (f(x), x).

The 1st selection does that.
5 0
3 years ago
Read 2 more answers
Can someone please explain how to do these?
Pani-rosa [81]

Answer:

<u>First question answer:</u> The limit is 69

<u>Second question answer:</u> The limit is 5


Step-by-step explanation:

For the first limit, plug in x=8 in the expression (9x-3), that's the answer for linear equations and limits.

So we have:

9x-3\\9(8)-3\\72-3\\69

The answer is 69


For the second limit, if we do same thing as the first, we will get division by 0. Also indeterminate form, 0 divided by 0. Thus we would think that the limit does not exist. But if we do some algebra, we can easily simplify it and thus plug in the value x=1 into the simplified expression to get the correct answer. Shown below:

\frac{x^2+8x-9}{x^2-1}\\\frac{(x+9)(x-1)}{(x-1)(x+1)}\\\frac{x+9}{x+1}

<em>Now putting 1 in x gives us the limit:</em>

\frac{x+9}{x+1}\\\frac{1+9}{1+1}=\frac{10}{2}=5

So the answer is 5

3 0
3 years ago
Which function describes the graph below? On a coordinate plane, a curve has a maximum value of 6 and a minimum value of 0. It c
Virty [35]

Answer:

I think the answer is b

Step-by-step explanation:

3cos(x)+3

7 0
3 years ago
Read 2 more answers
Other questions:
  • Look a the numbers below. 75,74,72,69,65,... describe the pattern.
    9·1 answer
  • The sales tax in NY is 8.25%. About how much will a $65.95 pair of shoes cost, including sales tax?
    9·1 answer
  • who's better Messi or Ronaldo based on these pictures. when there ratio of shots is m= 500 out of 400 and r=700 out of 3000
    11·2 answers
  • You reflect triangle PQR, with vertices P(-2, -4), Q(-3, -1), and R(-4, -4), across the y-axis to get triangle P′Q′R′. What are
    7·1 answer
  • Help me plisssssssssssssssssssssssssssssssssssss
    15·1 answer
  • Triangle B D C is shown with an exterior angle. Line C B extends through point A to form exterior angle D B A. Angle B D C is (2
    8·2 answers
  • How do the average rates of change for the pair of function compare over the given interval?
    6·1 answer
  • Taylor is twice as old as jessi if you add their ages together you get 27 hold old are Taylor and jessi
    13·1 answer
  • Can someone solve this pls
    15·2 answers
  • I need help with this question
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!