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
Vlad1618 [11]
3 years ago
15

Maya solved an equation incorrectly, as shown below: Step 1: 4x = 28 Step 2: x = 28 – 4 Step 3: x = 24 Which statement best expl

ains why Step 2 is incorrect in Maya's solution? (1 point)
A: She did not add 4 to 28.
B: She did not multiply 28 by 4.
C:She did not divide 28 by 4.
D:She did not multiply 28 four times.
Mathematics
2 answers:
sukhopar [10]3 years ago
7 0
Maya has to divide by 4, not subtract 4 <span>C:She did not divide 28 by 4. </span>
nikdorinn [45]3 years ago
4 0

Answer:

Option C - She did not divide 28 by 4.

Step-by-step explanation:

Given : Maya solved an equation incorrectly, as shown below:

Step 1: 4x = 28

Step 2: x = 28 - 4

Step 3:x = 24

To find : Which statement best explains why Step 2 is incorrect in Maya's solution?

Solution :

First we solve the expression again to find the mistake.

Step 1: 4x = 28

Step 2: x = \frac{28}{4}

Step 3: x = 7

Thus, by the above steps it is clear that she did not divide 28 by 4 in step 2.

Therefore, Option C is correct.

The required statement that best explains her mistake in steps 2 is She did not divide 28 by 4.

You might be interested in
Suppose that your start a business manufacturing and selling luxury bean bag chairs. It will cost $4000 to get your business sta
emmasim [6.3K]

Suppose that your start a business manufacturing and selling luxury bean bag chairs. It will cost $4000 to get your business started. You also calculate that each luxury bean bag chair will cost you $50 to produce

1. write an equation for the total cost to manufacture n luxury bean bag chairs.  

you decide to sell the luxury bean bag chairs for 62.50 each (revenue is the total money coming in from sales.)  

2. write an equation for the total revenue  made from selling n luxury bean bag chairs.  

3. solve the system of equations algebraically

Answer:

Step-by-step explanation:

From the given question;

1.

Let assume that c1 to be the cost  and n to be the number of bean bags produced.

amount used to start the business = $4000

thus;

The equation for the total cost to manufacture n luxury bean bag chairs is:

c₁ = 50 n + 4000

2.

Let c₂ be the total revenue made from selling ; then since 62.50 revenue is generated from each bag n sold

therefore ;

c₂ = 62.50 n

3.

c₁ = c₂

50 n + 4000 =  62.50 n

4000 = 62.50 n - 50 n

4000 = 12.50 n

n = 4000/12.50

n = 320

We can infer that in order to start making profit from the amount used tot start the business, you must have sold 320 bean bags.

8 0
3 years ago
Jim weighs 30 pounds less than Tom, and together they weigh 210 pounds. Let n = Tom's weight in pounds. How much does Tom weigh?
never [62]
First, let's write an equation for the situation.

Jim's weight is 30 pounds less than Tom's, so his weight is:

n - 30

If Tom's and Jim's weights add to 210:

n + (n - 30) = 210

Solve for n:

2n - 30 = 210

2n = 240

n = 120

Tom weighs 120 pounds.
5 0
3 years ago
Please I need help and the calculation of which contract is better.
kramer

Answer:

You should go with the 1st, because it's cheaper.

Step-by-step explanation:

1st plan:

30$ which include 75 mins of free calls and 100 free text messages

25 more mins * 10¢ /min(0.1$/min) = 2.5$

You will pay 32.5$

2nd plan:

(calls)100*0.3$=30$

(text messages)100 * 0.1$=10$

30+10 = 40$

8 0
3 years ago
Given vectors u = ⟨2, –3⟩ and v = ⟨1, –1⟩, what is the measure of the angle between the vectors?
oksano4ka [1.4K]

Answer:

The measure of the angle between the vectors = Ф = 11.30°

Step-by-step explanation:

Given

  • u = ⟨2, –3⟩
  • v = ⟨1, –1⟩

\mathrm{Computing\:the\:angle\:between\:the\:vectors}:\quad \cos \left(\theta \right)\:=\frac{\vec{a\:}\cdot \vec{b\:}}{\left|\vec{a\:}\right|\cdot \left|\vec{b\:}\right|}

Next, find the lengths of the vectors:

\mathrm{Computing\:the\:Euclidean\:Length\:of\:a\:vector}:\quad \left|\left(x_1\:,\:\:\ldots \:,\:\:x_n\right)\right|=\sqrt{\sum _{i=1}^n\left|x_i\right|^2}

u = ⟨2, –3⟩

\:\:\left|u\right|\:=\sqrt{2^2+\left(-3\right)^2}

     =\sqrt{13}

u = ⟨2, –3⟩

|v|=\sqrt{1^2+\left(-1\right)^2}

    =\sqrt{2}

Finally, the angle is given by:

\mathrm{Computing\:the\:angle\:between\:the\:vectors}:\quad \cos \left(\theta \right)\:=\frac{\vec{a\:}\cdot \vec{b\:}}{\left|\vec{a\:}\right|\cdot \left|\vec{b\:}\right|}

cos (Ф) = 5/√26

Ф = arc cos (cos (Ф)) = arc cos (5 √26) / (26)

Ф = 11.30°

Thus, the measure of the angle between the vectors = Ф = 11.30°

6 0
3 years ago
Read 2 more answers
the endpoints of segment LE are L(-2,2) and F(3,1). the endpoints of segment JR are J(1,-1) and R(2,-3). what is the approximate
Alenkinab [10]
Just think a bit don’t procrastinate! You got this
7 0
3 years ago
Read 2 more answers
Other questions:
  • ben and phoebe are finding the slope of a line then chose two points on the line and use them to find the slope.phoebe used two
    7·2 answers
  • Use the associative property to identify which expression is equal to (10)(5x)(7).
    13·1 answer
  • Pleaseeeee help me?<br> Anyone?
    5·2 answers
  • Please help will mark Brainly
    8·2 answers
  • The school chef put 3 apple pies, 2 blueberry pies, 4 peach pies, and 1 lemon pie in the oven to bake. At the start of lunch she
    5·1 answer
  • If Mr. Bisby wants to know the average of the grades on a test, what measure of central tendency would he be looking at?
    5·1 answer
  • Small perfect cubes.
    12·1 answer
  • Chứng minh: x² - 8x + 17 &gt; 0
    11·1 answer
  • ROMAN NUMERAL HI TOMMROW
    15·1 answer
  • How can emily use the above to make an estimate for 576 ÷8
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!