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
Anna [14]
3 years ago
8

Rebecca and Megan are shopping at store that sells jewelry, scarves, and purses. The cost of all the items at the store include

tax.
Rebecca buys some scarves that cost $5 each and 2 purses that cost $12 each. The cost of Rebecca total purchase is $39. Which equation can be used to find n, the number of scarves that Rebecca buys?

A. 5+24n=39
B 5n+24=39
C (24+5)n=39
D 24*5+n=39
Mathematics
1 answer:
Virty [35]3 years ago
6 0
To answer this item, we let n be the number of scarves that Rebecca bought because the number is unknown. The total cost would be the sum of the amount paid for n scarves and 2 purses. The equation would then be,
                                     5n + (12)(2) = 39
Simplifying,
                                      5n + 24 = 39

Thus, the answer is letter B. 
You might be interested in
I am thinking of two numbers. The sum of the two is 10 and the difference is 2
mixer [17]

Answer:

4 and 6

Step-by-step explanation:

First, let's find all the pairs that add up to 10.

  • 1 + 9, 2 + 8, 3 + 7, 4 + 6, and 5 + 5

Next, we find the difference between the addends for each pair.

  • 9 - 1 = 8
  • 8 - 2 = 6
  • 7 - 3 = 4
  • 6 - 4 = 2
  • 5 - 5 = 0

As you can, see the numbers that add to 10 and have a different of 2 is 4 and 6.

5 0
2 years ago
PLEASE HELP WITH EXPLANATION <br><br> F(x) = 3 - x; g(x) = -2x <br><br> find f(g(2))
ioda

Given,

f(x) = 3 - x

and

g(x) = -2x

Now,

g(2) =  - 2(2) =  - 4

f(g(2)) = 3 - ( - 4) = 3 + 4 = 7

8 0
2 years ago
Gravel is being dumped from a conveyor belt at a rate of 20 ft3 /min and its coarseness is such that it forms a pile in the shap
pantera1 [17]

Answer:

The height of the pile is increasing at the rate of  \mathbf{ \dfrac{20}{56.25 \pi}   \ \ \ \ \  ft/min}

Step-by-step explanation:

Given that :

Gravel is being dumped from a conveyor belt at a rate of 20 ft³ /min

i.e \dfrac{dV}{dt}= 20 \ ft^3/min

we know that radius r is always twice the   diameter d

i.e d = 2r

Given that :

the shape of a cone whose base diameter and height are always equal.

then d = h = 2r

h = 2r

r = h/2

The volume of a cone can be given by the formula:

V = \dfrac{\pi r^2 h}{3}

V = \dfrac{\pi (h/2)^2 h}{3}

V = \dfrac{1}{12} \pi h^3

V = \dfrac{ \pi h^3}{12}

Taking the differentiation of volume V with respect to time t; we have:

\dfrac{dV}{dt }= (\dfrac{d}{dh}(\dfrac{\pi h^3}{12})) \times \dfrac{dh}{dt}

\dfrac{dV}{dt }= (\dfrac{\pi h^2}{4} ) \times \dfrac{dh}{dt}

we know that:

\dfrac{dV}{dt}= 20 \ ft^3/min

So;we have:

20= (\dfrac{\pi (15)^2}{4} ) \times \dfrac{dh}{dt}

20= 56.25 \pi \times \dfrac{dh}{dt}

\mathbf{\dfrac{dh}{dt}= \dfrac{20}{56.25 \pi}   \ \ \ \ \  ft/min}

The height of the pile is increasing at the rate of  \mathbf{ \dfrac{20}{56.25 \pi}   \ \ \ \ \  ft/min}

8 0
3 years ago
4x(x + 3) +7x = what is the answer please
wel
4x^2+12x+7x
4x^2+19x

Was it meant to equal something or are you just simplifying the equation?
5 0
3 years ago
Read 2 more answers
Whats the answer for this one???? urgently need correct answers
kondor19780726 [428]

Answer:

  • Refer to the attachment

5 0
2 years ago
Other questions:
  • Xiao's teacher asked him to rewrite the sum 60+90 as the product of the GCF of the two numbers and a sum. Xiao's wrote 3(20 + 30
    7·1 answer
  • HELP ASAP<br> What is the domain of the relation?<br> -4&lt;=x&lt;=4<br> -4 -4&lt;=x&lt;=6<br> -4
    9·1 answer
  • how do you write these equations in slope-intercept form y+1=2x-3 ,2x-3=y+1 , 2y+2=4x-6. Are they the same or different?
    12·1 answer
  • Help me please like now
    7·2 answers
  • HELP ASAP?
    8·1 answer
  • The radius of a. circular garden is 15 feet. About how much fencing will be needed to enclose the garden?
    14·1 answer
  • Just question part d) pls
    14·1 answer
  • I need help pls and thxs
    11·2 answers
  • Heyyy could someone please help me out?? Would appreciate it. Thanks in advance!!^^
    7·1 answer
  • I need to find the equation of the line
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!