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
aleksandrvk [35]
3 years ago
12

Confusing stuff! Giving out 50 big points!

Mathematics
2 answers:
UkoKoshka [18]3 years ago
7 0
If the gum costs 75 cents today, which is 3 cents less than three times what the pack cost 20 years ago, we just need to arrange what we know into an equation.
We know that the price of gum today is 75 cents, so we can leave that on one side of the equation as a constant. Also, since we are dealing only with cents and not dollars, there is no need to shift the decimal point to the left.

? = 75

Now, we can work the equation.

The problem tells us that 75 is 3 cents less than three times the old cost. So, if x is the old cost, we can work out the equation based on that.
It says that it's 3 cents less than 3 times x. The question is basically the equation in word form.

3x - 3 = 75

'3x' being the "three times the old cost" part, '- 3' being the "3 cents less" part, and '75' of course being the current price of a pack of gum.
Option C is your correct answer.

BTW if we were to solve this, we would see that the old price of a pack of gum is:

3x - 3 = 75
   + 3      + 3

3x = 78
/3      /3

x = 26

20 years ago, a 75-cent pack of gum cost 26 cents.
Hope that helped! =)
Naddik [55]3 years ago
3 0
Welp, what IIIIIIIIIII like to do is SOLVE the problem FIRST, THEN see what steps we did and convert it to an equation. ;-)

So FIRST;
IF the gum was 3 cents less than what the pack costed BEFORE, we would have to ADD 75 + 3 = 78, THEN divide 78 by 3 to get 26, so the pack of gum costed 26 cents 20 years ago. We had to divide because we had to do the opposite operation than what the problem started with to reverse and find the original price of the gum. You could test it by doing 26 times 3, - 3 which equals 75.

NOW,
We could replace the original cost of the gum by "x" in this problem.
C. would be the correct choice since it EXACTLY replicas what we did above;
 Multpily x, (26), by 3 to get 78, then subtract 3 to get 75.
I hope I helped! =D



You might be interested in
Help with the answer
melamori03 [73]
AB is horizontal. The slope of a horizontal line is zero.
8 0
3 years ago
Thee questionn is beloww
Phantasy [73]

Given:

m\angle ABC=60

To find:

The m\angle ADC.

Solution:

In circle B, \angle ABC is central angle and \angle ADC is inscribed angle from two points A and C.

According to central angle theorem, central angle is always twice of inscribed angle.

m\angle ABC=2(m\angle ADC)         [Central angle theorem]

60=2(m\angle ADC)

Divide both sides by 2.

\dfrac{60}{2}=m\angle ADC

30=m\angle ADC

Therefore, m\angle ADC=30.

6 0
3 years ago
What is the answer to M+9=2
Ierofanga [76]

Answer:

M= -7

Step-by-step explanation:

M+9=2

M =2-9

M=-7

3 0
3 years ago
Read 2 more answers
If Besty has 14 t-shirts and 8 pairs of pants, the ratio of pants to t-shirts is?
vlabodo [156]

Answer:

4:7

Step-by-step explanation:

8 : 14

8/2 : 14/2

= 4 : 7

6 0
3 years ago
An electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricit
TiliK225 [7]

Answer:

atleast 385

Step-by-step explanation:

Given that an electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricity, they would like know the mean daily power usage for homes there.

Population std deviation = \sigma = 50

Sample size =n

STd error of sample mean = \frac{50}{\sqrt{n} }

Margin of error for 95% would be Critical value ( std error)

Here since population std dev is known we can use Z critical value= 1.96

1.96*\frac{50}{\sqrt{n} }19.6^2\\n>384.16

Sample size should be atleast 385

5 0
3 years ago
Other questions:
  • A 12inch diameter pizza has 22 calories per square inch. About how many calories are in the entire pizza? Use 3.14 for pi. Selec
    8·1 answer
  • Hello can someone please help with this question.
    10·2 answers
  • Suppose you have a 100-mL cup,a 300-mL cup, and a 500-mL cup. list two different ways you can measure exactly 1 L
    13·2 answers
  • Evaluate the expression<br> -10 - -5
    6·1 answer
  • 3,9,7,21,19,57.55,165 what is the last number?
    9·1 answer
  • The figure shown represents a piece of chocolate.
    14·1 answer
  • Write as an expression: Twice the square of the product of x and y
    7·1 answer
  • Ghhhhhhjreffr76f7urfytfy6r
    5·1 answer
  • What is the simplified slope intercept form
    13·1 answer
  • you flip a coin and draw a marble at random from a bag containing two purple marbles and one white marble . what is the probabil
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!