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
skelet666 [1.2K]
3 years ago
7

Lori bought a shirt and a hat at a half off sale. If she spent a total of $21 on the two items, what was the original price of t

he hat ?
Mathematics
2 answers:
Advocard [28]3 years ago
6 0

Then the original price was $42

Because it is half off we multiply 21 by 2 and get 42.

jekas [21]3 years ago
5 0

Answer:

$21

Step-by-step explanation:

Let the amount Lori bought the shirt and the hat be $x, if she bought them at half off sale, the initial price of both item will be 2 × $x

If she spent $21 on both items, the initial price will have been 2 x $21 = $42 where x is $21

Original price of the hat and shirt is therefore $42. Since both are on half off sale, the initial price is the hat will be $42/2 = $21

You might be interested in
What is the sum of the first seven terms of the geometric series 2 - 10 +50 -...?
Umnica [9.8K]

Answer:

26042.

Step-by-step explanation:

What's the first term of this geometric series?

2.

What's the common ratio of this geometric series?

Divide one of the terms with the previous term. For example, divide the second term -10 with the first term 2.

\displaystyle r = \frac{-10}{2} = -5.

What's the sum of this series to the seventh term?

The sum of the first n terms of a geometric series is:

\displaystyle a_1 \cdot \frac{1-r^{n}}{1-r},

where

  • a_1 is the first term of the series,
  • r is the common ratio of the series, and
  • n is the number of terms in this series.

\displaystyle 2 \times\frac{1- (-5)^{7}}{1- (-5)}=26,042.

3 0
3 years ago
Some teenagers collected trash for a beach cleanup. The data for the number of pounds of trash collected by each teenager are sh
Mumz [18]

Answer:

4.66

Step-by-step explanation:

We are given the following data

26, 26, 21, 22, 20, 25, 35

Step 1

We find the Mean

Mean = 26+ 26+ 21+ 22+20+25+ 35/7

= 175/7

= 25

Step 2

We find the Standard Deviation

The formula for Standard deviation that we would use is the Population Standard deviation, this is because the data given above is the data of the number of pounds of trash collected by each teenager

= √(x - Mean)²/n

= √(26 - 25)²+( 26 - 25)²+ (21 - 25)²+ (22 - 25)² +(20 - 25)²+(25 - 25)²+ (35 - 25)²/7

= √152/7

= √21.7142857

= 4.65985898

Approximately = 4.66

5 0
3 years ago
Read 2 more answers
What is the solution to the system of equations? 2x + 3y = 26 3x + 5y = 40
Bond [772]

Answer:

x = 10 , y = 2

Step-by-step explanation:

8 0
2 years ago
Which function has lowest rate of change?
Delvig [45]

Answer:

A: Algebraic Function

Step-by-step explanation:

Algebraic function is given as;

5x – 2y = 15

Since we are dealing with rate of change, let's make y the subject first and find dy/dx.

Thus;

2y = 5x - 15

y = (5x/2) - 15/2

dy/dx = 5/2

dy/dx = 2.5

The verbal function is given as;

Cost of 5 pencils is 15 dollars

Thus, rate of 1 pencil = 15/5 = 3 pencils per dollar

We can see that the lowest rate of change is 2.5 and it is the algebraic function.

8 0
3 years ago
Sally has 16 marbles in her collection. John has only 7 marbles. Sally gives John 8 of her marbles. How much marbles does John h
Sati [7]

Answer:

The answer is 15

Step-by-step explanation:

hope this helps

5 0
3 years ago
Other questions:
  • Ms karane orders a total of 350 black, blue and red pens for the school she orders 170 black pens and she orders 120 blue pens.
    10·2 answers
  • Javier bought a 20 ounce smoothie that contains 450 total calories how many calories does this smoothie contain per ounce
    9·2 answers
  • Which of the following square pyramids have a volume of 24 mm. choose all that apply
    10·1 answer
  • The water in Jana's swimming pool is 50 inches deep. Each minute the water loses 0.05 inch of depth. Write an algebraic expressi
    9·1 answer
  • QUESTION 8 The probability of concluding that assignable variation exists when only random variation is present is: (I) the prob
    13·1 answer
  • 3. Is the triangle a right triangle?
    6·1 answer
  • Dena has 6.25 inches of blue ribbon, 0.375 foot of orange ribbon, and 0.5 yard of green ribbon. How many inches of ribbon does D
    9·1 answer
  • Two pencils and a ruler cost 98 cents in total. One pencil and 2 rulers cost $1.24 in total. Find the cost of each item.
    13·2 answers
  • The questions is - What is the slope intercept? Then convert your answer to standard form.
    12·1 answer
  • Which best describes how the graph of g(x) = square root of 25/9 x relates to the graph of the parent function, f(x) = square ro
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!