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
zysi [14]
2 years ago
10

The cost of 7 scarves is $75.25. What is the unit price? The unit price is $ per scarf.

Mathematics
2 answers:
nordsb [41]2 years ago
8 0
75.25/7 = 10.75

The unit price is $10.75 per scarf
lana66690 [7]2 years ago
3 0
10.75 per scarf 75.25/7= 10.75
You might be interested in
Consider a tank used in certain hydrodynamic experiments. After one experiment the tank contains liters of a dye solution with a
Alja [10]

Answer:

t = 460.52 min

Step-by-step explanation:

Here is the complete question

Consider a tank used in certain hydrodynamic experiments. After one experiment the tank contains 200 liters of a dye solution with a concentration of 1 g/liter. To prepare for the next experiment, the tank is to be rinsed with fresh water flowing in at a rate of 2 liters/min, the well-stirred solution flowing out at the same rate.Find the time that will elapse before the concentration of dye in the tank reaches 1% of its original value.

Solution

Let Q(t) represent the amount of dye at any time t. Q' represent the net rate of change of amount of dye in the tank. Q' = inflow - outflow.

inflow = 0 (since the incoming water contains no dye)

outflow = concentration × rate of water inflow

Concentration = Quantity/volume = Q/200

outflow = concentration × rate of water inflow = Q/200 g/liter × 2 liters/min = Q/100 g/min.

So, Q' = inflow - outflow = 0 - Q/100

Q' = -Q/100 This is our differential equation. We solve it as follows

Q'/Q = -1/100

∫Q'/Q = ∫-1/100

㏑Q  = -t/100 + c

Q(t) = e^{(-t/100 + c)} = e^{(-t/100)}e^{c}  = Ae^{(-t/100)}\\Q(t) = Ae^{(-t/100)}

when t = 0, Q = 200 L × 1 g/L = 200 g

Q(0) = 200 = Ae^{(-0/100)} = Ae^{(0)} = A\\A = 200.\\So, Q(t) = 200e^{(-t/100)}

We are to find t when Q = 1% of its original value. 1% of 200 g = 0.01 × 200 = 2

2 = 200e^{(-t/100)}\\\frac{2}{200} =  e^{(-t/100)}

㏑0.01 = -t/100

t = -100㏑0.01

t = 460.52 min

6 0
3 years ago
One way to divide decimal numbers is to use an equivalent expression.
dangina [55]

Answer:

the answer is 2.5

4 0
3 years ago
What is the number in which the least common multiple equals the product of the two numbers
motikmotik
2 and 2
0 and 0
-2 and -2
6 0
3 years ago
Angela tried to solve an equation step by step. \begin{aligned} \dfrac34+m&=\dfrac54\\\\ \dfrac34+m-\dfrac34&=\dfrac54+\
Liono4ka [1.6K]

Answer:

The mistake she made was ; She didn't change the sign when subtracting -3/4 from both sides

She wrote 5/4+3/4 instead of 5/4-3/4

Step-by-step explanation:

Correct solution:

\frac{3}{4}  + m =   \frac{5}{4}

Subtract-3/4 from both sides

\frac{3}{4}  -  \frac{3}{4}  + m =  \frac{5}{4}  -  \frac{3}{4}

Simplify

m =  \frac{5}{4}  -  \frac{3}{4}  \\ m =  \frac{1}{2}

7 0
3 years ago
Write the equation for the line that goes through point (1, 1) with slope m = -9
DENIUS [597]

1) Since we have the slope, and one point we can find that linear equation using this point-slope formula. Plugging them we have:

\begin{gathered} (y-y_0)=m(x-x_0) \\ y-1=-9(x-1) \\ y-1=-9x+9 \\ y=-9x+9+1 \\ y=-9x+10 \end{gathered}

2) Note that we had to add 1 to both sides, to keep the "y "on the left.

3) Therefore, y=-9x+10 is the answer.

7 0
1 year ago
Other questions:
  • A right triangle has a hypotenuse of length 99 inches. if one angle is 34 degrees34°​, find the length of each leg.
    13·1 answer
  • Resolver la siguiente ecuación por eliminación o sustitución: a-8b= -9 a-2b= -7
    15·1 answer
  • $675 borrowed for six years at an interest rate of 10% how much is interest
    7·1 answer
  • Subtract polynomials (intro)
    11·1 answer
  • Trey is 3 times older than his sister Kellit k stands for Kelli's age, which expression represents Trey's age?
    9·1 answer
  • HELP ASAP<br><br> Write the equation in standard form for the circle x2 + 32 = -y² + 12x.
    6·2 answers
  • Please answer thisss &lt;3
    15·1 answer
  • End points of the same line segment are called
    14·1 answer
  • Anyone know the answer I’m lost…
    11·1 answer
  • Help me please and thank you .
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!