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
vesna_86 [32]
3 years ago
7

Evaluate the following expression: -4xy when x = 1/4 and y = -3.

Mathematics
1 answer:
Travka [436]3 years ago
7 0

Answer:

3

Step-by-step explanation:

-4(1/4)(-3)= 3

Mark as brainlist.

You might be interested in
Please help <br> Question: 6b = 18<br> Answer: ?
ratelena [41]

Answer:

6b=18

b=18/6

b=3

.

.

.

.

.

.

3 0
3 years ago
Read 2 more answers
Students went on a picnic. They recorded a list of the number of animals
lorasvet [3.4K]

Observation that we can make is min = 10, max = 19, range = 9, Maximum frequency of a number is 12, Average = 12.9, median = 12, mode = 12 it is slightly skewed on the right.

Step-by-step explanation:

  • It is imperative to create a data in a tabular column before analyzing.
  • Once the data is created use tally marks or frequency distribution.
  • Frequency distribution helps the data to provide occurrence of event.
  • Very important to number which is a counting numbers are discrete.
  • Continuous of data are ones which are in decimal.
  • Descriptive statistics is the 1st level of Statistics.
  • It finds, where the data stands. Minimum, Maximum is understandable.
  • Range is at what level data is expanded.
  • Average is the one numeric of a number.
  • Median is the mid point of data
  • Mode is the repetitive number of the data.
  • Skewness is whether data is having extreme directions.
5 0
3 years ago
Karina is designing a logo on a coordinate plane. The logo is a square whose area is 200 square units. She places a circle in th
snow_lady [41]

Answer: 66%

Step-by-step explanation:

I took the test on khan.

4 0
3 years ago
Using the distributive property,simplify the following: 5(x+2)
MArishka [77]
The answer is 5x + 10 because you have to times 5 by everything in the parenteses
3 0
3 years ago
(1 point) A fish tank initially contains 15 liters of pure water. Brine of constant, but unknown, concentration of salt is flowi
Drupady [299]

Answer:

a. \dfrac{dx}{dt} = 6\frac{2}{3} \cdot c

b. x(t) = 6\frac{2}{3} \cdot c \cdot t

c. c  = \dfrac{3}{8}  \ g/L

Step-by-step explanation:

a. The volume of water initially in the fish tank = 15 liters

The volume of brine added per minute = 5 liters per minute

The rate at which the mixture is drained = 5 liters per minute

The amount of salt in the fish tank after t minutes = x

Where the volume of water with x grams of salt = 15 liters

dx =  (5·c - 5·c/3)×dt = 20/3·c = 6\frac{2}{3} \cdot c \cdot dt

\dfrac{dx}{dt} = 6\frac{2}{3} \cdot c

b. The amount of salt, x after t minutes is given by the relation

\dfrac{dx}{dt} = 6\frac{2}{3} \cdot c

dx = 6\frac{2}{3} \cdot c \cdot dt

x(t) = \int\limits \, dx  = \int\limits \left ( 6\frac{2}{3} \cdot c \right) \cdot dt

x(t) = 6\frac{2}{3} \cdot c \cdot t

c. Given that in 10 minutes, the amount of salt in the tank = 25 grams, and the volume is 15 liters, we have;

x(10) = 25 \ grams(15 \ in \ liters) = 6\frac{2}{3} \times c \times 10

6\frac{2}{3} \times c  =\dfrac{25 \ grams }{10}

c  =\dfrac{25 \ g/L }{10 \times 6\frac{2}{3} }  = \dfrac{25 \ g/L}{10 \times \dfrac{20}{3} } =\dfrac{3}{200} \times 25 \ g/L= \dfrac{75}{200}  \ g/L = \dfrac{3}{8}  \ g/L

c  = \dfrac{3}{8}  \ g/L

4 0
3 years ago
Other questions:
  • The temperature on a summer afternoon is 76°F. Define a variable and write an expression to find the temperature after it change
    14·1 answer
  • Ou want to get an oil change every 4,000 miles. How many oil changes do you get in a year driving 1000 miles a month?
    7·1 answer
  • You mix 2/5
    14·1 answer
  • which expression represents the perimeter of the rectangle above? (3x-3)(3x-1) a.6x+2 b.12x-8 c.6x-4 d.12x+2
    15·2 answers
  • A submarine was twenty feet below the surface of the water and
    9·1 answer
  • Subtract the following complex numbers: (4+4i)-(13+17i) ??
    8·2 answers
  • Find the value of the missing coefficient a in the equation y = a(x - 3)(x + 5) if the graph goes through the point (1, -6)
    10·2 answers
  • A gold chain with an original price of $120 is on sale for $96. What is the percent of the discount?
    9·2 answers
  • 17 There are 64 species of animals in the Metropolitan Zoo.
    12·1 answer
  • Find the midpoint M of the line segment joining the points S = (-5, -3) and T = (7, 1).<br> T
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!