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
lesantik [10]
3 years ago
15

Dan earns $42.75 per month working as a tutor. He worked as a tutor for 4 months. He also earned $52.45 walking dogs in the neig

hborhood. He spent $18.50 of his total earning to buy a movie ticket and candy. Dan put 1 over 3 of the remaining money in his savings account.
Dan used the following steps to find the total money he put in his savings account:

Step 1: [($42.75 ⋅ 4) + $52.45 − $18.50] ⋅ 1 over 3

Step 2: [$171 + $52.45 − $18.50] ⋅ 1 over 3

Step 3: 241.95 ⋅ 1 over 3

Step 4: $80.65

In which step did Dan first make an error? Use words to explain how Dan can correct his error.
Mathematics
1 answer:
vagabundo [1.1K]3 years ago
7 0

Answer:

He subtracted incorrectly

Step-by-step explanation:

You multiply 42.75 x 4 and get 171. Then you add 171+52.45=223.45 and then you subtract 223.45-18=205.45 and then you multiply 223.45 x .3333 = 68.3265 or 68.33 (rounded)

You might be interested in
Drag and drop the fractions to order them from least to greatest. 2/3 -4/5 1/4 -3/7
blagie [28]

Step-by-step explanation:

I hope this helps out bye.

6 0
2 years ago
Do the ratios 2:4 and 5:10 form a proportion?<br> yes or no
Kisachek [45]

Answer:

Yes, the ratios do form a proportion.

5 0
2 years ago
In a shipment of 56 vials, only 13 do not have hairline cracks. If you randomly select 3 vials from the shipment, in how many wa
Elden [556K]

Answer: 27434

Step-by-step explanation:

Given : Total number of vials = 56

Number of vials that do not have hairline cracks = 13

Then, Number of vials that have hairline cracks =56-13=43

Since , order of selection is not mattering here , so we combinations to find the number of ways.

The number of combinations of m thing r things at a time is given by :-

^nC_r=\dfrac{n!}{r!(n-r)!}

Now, the number of ways to select at least one out of 3 vials have a hairline crack will be :-

^{13}C_2\cdot ^{43}C_{1}+^{13}C_{1}\cdot ^{43}C_{2}+^{13}C_0\cdot ^{43}C_{3}\\\\=\dfrac{13!}{2!(13-2)!}\cdot\dfrac{43!}{1!(42)!}+\dfrac{13!}{1!(12)!}\cdot\dfrac{43!}{2!(41)!}+\dfrac{13!}{0!(13)!}\cdot\dfrac{43!}{3!(40)!}\\\\=\dfrac{13\times12\times11!}{2\times11!}\cdot (43)+(13)\cdot\dfrac{43\times42\times41!}{2\times41!}+(1)\dfrac{43\times42\times41\times40!}{6\times40!}\\\\=3354+11739+12341=27434

Hence, the required number of ways =27434

5 0
3 years ago
Luke shaded 20 squares on his hundredths grid. Bekka shaded 30 squares on her hundredths grid. Write two decimals greater than L
Rus_ich [418]
Luke's original decimal is 0.20 and Bekka's is 0.30 so 0.40 and 0.50 would be greater than Luke's original and 0.20 and 0.10 are lesser than Bekka's original decimal
5 0
3 years ago
Read 2 more answers
Simplify xz^3 x 4x^4z^4
beks73 [17]

Answer:

4x^5z^7

Step-by-step explanation:

Multiply the whole numbers and add the exponents with the same base.

6 0
3 years ago
Other questions:
  • Convert the Cartesian equation x 2 + y 2 + 2y = 0 to a polar equation.
    15·1 answer
  • What is the value of x?
    12·2 answers
  • 6(2x-11)+15=21
    15·2 answers
  • 4) Find m.
    8·1 answer
  • (18 POINTS) PLEASE HELP me! thanks!
    15·1 answer
  • Brianna loves to compete in triathlons. At a race a few months ago, she finished in 360 minutes. At a race yesterday, she took 3
    7·1 answer
  • Simplify.<br> 8^15 : 8^-3<br> asap please
    5·2 answers
  • Helppp it's due today​
    12·2 answers
  • Verne has two pieces of lumber the redwood board is 3/4 inch thick. The pine board is only 1/5 inch thick. How much thicker is t
    8·1 answer
  • 5. The perimeter of a room is measured and found
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!