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____ [38]
3 years ago
12

The president of a certain university receives a salary that is three times the salary of one of the department heads. The total

of the two salaries is $240,000
Mathematics
1 answer:
marissa [1.9K]3 years ago
8 0

Answer:

Salary of President =   $180,000

Salary of Dept. Head =  $60,000

Step-by-step explanation:

The question is to find the salary of president and department head.

We let the salary of one of department heads be "x"

Since, the salary of president is THREE (3) TIMES a department head, we can say:

Salary of President = 3x

Now, we know the total of these 2 salaries is 240,000. Thus, we can write:

Salary of President + Salary of Dept. Head = 240,000

3x + x = 240,000

Now, we can solve for x:

3x + x = 240,000\\4x=240,000\\x=60,000

And now the president is "3x", so his salary is:

3(60,000) = 180,000

Thus,

President's salary = 180,000

Dept head's salary = 60,000

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Identify the parent function that can be used to graph the function f(x)= (1/4 x)^3
Kaylis [27]

Answer:

f(x)=x^3

Step-by-step explanation:

The parent function denotes the simplest function (free from any horizontal/vertical stretch/compression) that represents a family of functions. In this case the term 1/4 indicates a horizontal stretch and should be removed to find the parent function of f(x)=x^3. From here we're in simplest form, since y=x or others represent a completely different family of functions and cannot be obtained from horizontal/vertical stretches/compressions.

8 0
3 years ago
A bottle holds exactly 2/3 pint of liquid. How many 2/3-pint bottles can be filled from a 24-pint container
kifflom [539]

Answer:

36 number of 2/3-pint bottles can be filled from a 24-pint container

Step-by-step explanation:

Volume of the container is 24 pint

Volume of the bottle is 2/3 pint

Number of 2/3 pint bottles that can be filled from 24 pint container is

\frac{24}{\frac{2}{3} } \\= 24 * \frac{3}{2} \\= 12 * 3\\= 36

36 number of 2/3-pint bottles can be filled from a 24-pint container

6 0
3 years ago
A model rocket was built using a scale factor of 1:15 if the height of the actual rocket is 9.9m, what is the height of the mill
beks73 [17]

Answer:

660 mm

Step-by-step explanation:

we know that

The scale factor is \frac{1}{15}

That means

1 unit in the model represent 15 units in the actual

or

1 m in the model represent 15 m in the actual

To find out the height of the model rocket, divide the height of the actual rocket by 15

so

9.9\ m=\frac{9.9}{15}= 0.66\ m

Convert m to mm

Remember that

1\ m=1,000\ mm

To convert meters to millimeters, multiply by 1,000

so

0.66\ m=0.66(1,000)=660\ mm

3 0
3 years ago
Suppose r⃗ (t)=cos(πt)i+sin(πt)j+5tkr→(t)=cos(πt)i+sin(πt)j+5tk represents the position of a particle on a helix, where zz is th
gtnhenbr [62]

Answer:

a) t = 4

b) v = pi j + 5 k

c) rt = 1i + (pi t) j + (20 +5t )k

Step-by-step explanation:

You have the following vector equation for the position of a particle:

r(t)=cos(\pi t)\hat{i}+sin(\pi t)\hat{j}+5t\hat{k}    (1)

(a) The height of the helix is given by the value of the third component of the position vector r, that is, the z-component.

For a height of 20 you have:

5t=20\\\\t=\frac{20}{5}=4

(b) The velocity of the particle is the derivative, in time, of the vector position:

v(t)=\frac{dr(t)}{dt}=-\pi sin(\pi t)\hat{i}+\pi cos(\pi t)\hat{j}+5\hat{k}    (2)

and for t=4 (height = 20):

v(t=4)=-\pi sin(\pi (4))\hat{i}+\pi cos(\pi (4))\hat{j}+5\hat{k}\\\\v(t=4)=-0\hat{i}+\pi\hat{j}+5\hat{k}

(c) The vector parametric equation of the tangent line is given by:

r_t(t)=r_o+vt      (3)

ro: position of the particle for t=4

r_o=cos(\pi (4))\hat{i}+sin(\pi (4))\hat{j}+20\hat{k}\\\\r_o=\hat{i}+0\hat{j}+20\hat{k}

Then you replace ro and v in the equation (3):

r_t=(1\hat{i}+20\hat{k})+(\pi \hat{j}+5\hat{k})t\\\\r_t=1\hat{i}+\pi t \hat{j}+(20+5t)\hat{k}

3 0
3 years ago
What’s the answer? I’m very confused !
anygoal [31]

Answer:

12 units

Step-by-step explanation:

3+3+3+3=12

3 0
3 years ago
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