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
liberstina [14]
2 years ago
11

Elisa bought some boxes of pencils for $3.99 each and some boxes of pens at $4.99 each. If p represents the number of boxes of p

encils and b represents the number of boxes of pens, which equation describes the relationship between these two variables if she spent a total of $39.91 on these items?
A. 4.99p + 3.99b = 39.91
B. 4.99p - 3.99b = 39.91
C. 3.99p + 4.99b = 39.91
D. 3.99p - 4.99b = 39.91
Mathematics
1 answer:
vladimir2022 [97]2 years ago
8 0

The equation which describes the relationship between these two variables is 39.91 = 3.99p + 4.99b

Given:

<em>Cost of each box of pencil</em> = $3.99

<em>Cost of each box of pen </em>= $4.99

<em>Total cost</em> = $39.91

let

p = <em>number of boxes of pencils</em>

b = <em>number of boxes of pens</em>

The equation:

<em>Total cost = (Cost of each box of pencil × number of boxes of pencils) + (Cost of each box of pen × number of boxes of pens)</em>

39.91 = (3.99 × p) + (4.99 × b)

39.91 = 3.99p + 4.99b

Therefore, equation which describes the relationship between these two variables is 39.91 = 3.99p + 4.99b

Read more:

brainly.com/question/8957185

You might be interested in
(03.01 LC)<br><br> What is the length of leg y of the right triangle? (1 point)
EastWind [94]

Answer:

<h2>A</h2>

Step-by-step explanation:

The complete question is

What is the length of leg y of the right triangle?

A right triangle with hypotenuse 26 and legs 24 and y

  • 10
  • 14
  • 24
  • 26

We need to use the Pythagorean Theorem, where h=26 and x=24,

h^{2} =x^{2} +y^{2}\\ 26^{2}=24^{2}+y^{2}\\y=\sqrt{26^{2}-24^{2}}\\ y=\sqrt{676-576}\\ y=\sqrt{100}\\ y=10

Therefore, the right answer is A. The length of the missing leg is 10 units.

4 0
2 years ago
Explain why a quadratic equation with a positive discriminant has two real solutions, a quadratic equation with a negative discr
Bad White [126]

Answer:

A quadratic equation can be written as:

a*x^2 + b*x + c = 0.

where a, b and c are real numbers.

The solutions of this equation can be found by the equation:

x = \frac{-b +- \sqrt{b^2 - 4*a*c} }{2*a}

Where the determinant is D = b^2 - 4*a*c.

Now, if D>0

we have the square root of a positive number, which will be equal to a real number.

√D = R

then the solutions are:

x = \frac{-b +- R }{2*a}

Where each sign of R is a different solution for the equation.

If D< 0, we have the square root of a negative number, then we have a complex component:

√D = i*R

x = \frac{-b +- C*i }{2*a}

We have two complex solutions.

If D = 0

√0 = 0

then:

x = \frac{-b +- 0}{2*a} = \frac{-b}{2a}

We have only one real solution (or two equal solutions, depending on how you see it)

3 0
3 years ago
Determine the perimeter of a triangle with sides that measure 16.2 inches, 10.04 inches and 12.2 inches.
Ksju [112]

Answer:

Step-by-step explanation:

Solution,

The perimeter of a triangle=Sum of all sides

16.2in+10.04in+12.2in\\=38.44inches

Hope it will help you a lot.

5 0
2 years ago
maria had lunch at her favorite resturant. the cost of her meal was $32. after leaving a 15% tip, what was the total cost of her
Zigmanuir [339]

Answer:

$36.80

Step-by-step explanation:

15% of 32 = 0.15x32 = $4.80

32+4.80 because it was a tip being added to the bill

=36.80

8 0
3 years ago
Read 2 more answers
A cabinet that costs a dealer ₱14,000 with expenses set at 15% of the selling price and the required profit is set at 15% of the
pantera1 [17]
I think it is the answer b
3 0
3 years ago
Other questions:
  • Teresa says that because the diagonals of a parallelogram bisect each other, if one diagonal is 4.2 cm, the other diagonal must
    15·1 answer
  • A scoter is priced between 1000 and 2000 it's price is a multiple of 10 all of the digits in the price except for the thousand d
    15·1 answer
  • How to guess the number someone is thinking?
    10·1 answer
  • Jason receives some money for his birthday. He spends 15 of the money and has $14.40 left. Calculate how much money he received
    12·1 answer
  • A number that is 42% less than c.
    13·1 answer
  • Use the distributive property to remove the parentheses.
    7·2 answers
  • What is the height of a triangle when the area is 36 cm and the base is 6 cm
    15·2 answers
  • Look at pic plzzzzzz
    10·1 answer
  • What is the mode: 18,21,22,18,19
    13·1 answer
  • The slope is …<br> Find the slope<br> m = ___
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!