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Ivenika [448]
3 years ago
5

(12)2−6(2−23) Enter your answer, as a simplified fraction, in the box.

Mathematics
2 answers:
Effectus [21]3 years ago
8 0

Answer:

-\frac{31}{4}

Step-by-step explanation:

The given expression is

(\frac{1}{2})^2-6(2-\frac{2}{3})

We need to find the simplified form of the given expression.

Simplify the brackets first.

\frac{1}{4}-6(\frac{6-2}{3})

\frac{1}{4}-6(\frac{4}{3})

\frac{1}{4}-\frac{24}{3})

Cancel out the common facotrs.

\frac{1}{4}-8

On further simplification we get

\frac{1-32}{4}

-\frac{31}{4}

Therefore the simplified form of given expression is -\frac{31}{4}.

vesna_86 [32]3 years ago
4 0

128

HOPPPPPEEEEEE THISSSSSSSSSS HELLPPPPSS

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the population of a school is 400 students. Next year it is expected to be about 120% of what it is now. Choose next year's stud
Gelneren [198K]
Given:
this year's population: 400 students
next year's population: 120% of this year's population

this year's population x rate of next year's population = next year's population

400 students * 120% = 480 students  CHOICE D.

There will be 480 students next year.


5 0
3 years ago
PLEASE ANSWER!!! Brainliest to whoever answers at first!Order the following expressions by their values from least to greatest.
Brilliant_brown [7]

Answer:

  -j, 0, j-k

Step-by-step explanation:

j is a positive number, so -j will be less than 0.

j is a number greater than k, so j - k will be greater than 0.

From least to greatest, the order is ...

  -j, 0, j-k

5 0
4 years ago
A ball is dropped from a height of 600 feet. The function describing the height of the ball at t seconds after it dropped is <im
bekas [8.4K]

The average velocity of the object after during the first three seconds is: 48m/s

The time at which the instantaneous velocity equals the average velocity within the first three seconds is 1.5 seconds.

<h3>What is instantaneous and average velocities?</h3>

Instantaneous velocity  is the speed of an object at a particular point in time.

Average velocity is the velocity of an object after covering a certain distance for a period of time

Analysis:

Given

initial height = 600 feet

Height with respect to time = f(t) = -16t^{2} + 600

a) Height at t = 0 = 600 feet

    Height at t = 3 seconds = f(3) = -16(3)^{2} + 600 = 456 feet

Distance travelled  = 600 - 456 = 144 feet

Average velocity = distance travelled/time taken  = 144/3 = 48 feet/seconds

b) instantaneous velocity at time t = \frac{df(t)}{dt} = \frac{d(-16t^{2} + 600) }{dt} = -32t

  when instantaneous velocity equal average velocity

     -32t = -48

      t = 1.5 seconds

In conclusion, the Average velocity after 3 seconds is 48 feet per seconds and the time taken for the average velocity to equal the instantaneous velocity is 1.5 seconds.

Learn more about instantaneous and Average velocity: brainly.com/question/13372043

#SPJ1

7 0
3 years ago
Write an equation that shows the relationship 40% of 140 is x
uranmaximum [27]

Answer:

x=140times0.4

Step-by-step explanation:

then subtract your anser from 140

5 0
3 years ago
Simlplify the expression 52^-5 then write it as a repeated multiplication
Soloha48 [4]
Exponent rule : a^-b = 1 / a^b

52^-5 = 
1 / 52^5 =
1 / (52 * 52 * 52 * 52 * 52)
6 0
3 years ago
Read 2 more answers
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