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
kobusy [5.1K]
3 years ago
14

Monica paid sales tax of $2.80 when she bought a new bike helmet. If the sales tax rate was 7%, how much did the store charge fo

r the bike helmet before tax?
Mathematics
1 answer:
larisa [96]3 years ago
5 0

7 % of cost price is 2.80 , What about 1%?

7 = 2.80

1 = x   (where x is the price value of 1% in dollars)

We simplify the above equation, so:

7 × x = 2.8 × 1  →  7x = 2.8 →  x = 2.8 / 7  →   x = 0.4 dollars

We know that 100%  represents the whole price,

so if 1% is 0.4 dollars, then 100% will be 0.4 × 100 = 40 dollars

Therefore the store charged $40  dollars for the helmet before tax




You might be interested in
Which value of k makes 3- 3k -12 > 9 true ?
Nadya [2.5K]

Answer:

k

Step-by-step explanation

k can be 11. If u plug 11: 3-21-12 is bigger than 9

3 0
3 years ago
Read 2 more answers
For each day that Sasha travels to work, the probability that she will experience a delay due to traffic is 0.2. Each day can be
lions [1.4K]

Answer:

0.8213

Step-by-step explanation:

-This is a binomial probability problem given by the function:

P(X=x)={n\choose x}p^x(1-p)^{n-x}

Given that n=21 and p=0.2, the probability that she experience a delay on at least 3 days is calculated as:

P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\P(X\geq 3)=1-P(X

Hence, the probability that she experience delay on at least 3 days is 0.8213

6 0
3 years ago
charlie needs to make a total of 60 deliveries this week. so far he has completed 18 of them. what percentage of his total deliv
VladimirAG [237]
18 / 60 = 0.3
Charlie has completed 30% of his deliveries
5 0
3 years ago
Guys please help me with this question, I’d appreciate it a lot
lutik1710 [3]

Answer:

540

Step-by-step explanation:

area of trapezium is b×h

7 0
3 years ago
Read 2 more answers
On the day of a child’s birth, a deposit of $25,000 is made in a trust fund that pays 8.75% interest, compounded continuously. D
lbvjy [14]

9514 1404 393

Answer:

  $222,822.57

Step-by-step explanation:

The account balance is given by ...

  A = P·e^(rt)

where P is the principal invested at interest rate r for t years.

  A = $25,000×e^(0.0875·25) ≈ $222,822.57

8 0
2 years ago
Other questions:
  • Which if the following can be contained in a plane?
    8·2 answers
  • What is the start time 30 minutes before 10:08am
    7·2 answers
  • A circle with radius of 1  cm sits inside a 11 cm x 12 cm rectangle
    9·2 answers
  • Solve: 7 + 5 + 22 × 12 − 7 =
    5·2 answers
  • Find the points which defined the reflection of the figure giving by A(2,2) B (3,7) C (5,5) reflected across the X-axis
    6·1 answer
  • Somebody help me please
    10·2 answers
  • Look at the pic this is 8th grade math
    5·1 answer
  • For the function y=3x2: (a) Find the average rate of change of y with respect to x over the interval [3,6]. (b) Find the instant
    12·1 answer
  • Enter the appropriate value to answer the question or solve the problem.
    5·1 answer
  • Un niño de 1,5 de altura divisa una piedra en el suelo con un ángulo de depresión de 37° a qué distancia se encuentra el niño de
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!