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3 years ago

The difference of the square of a number and 18 is equal to 3 times that number. Find the positive solution.

Mathematics

2 answers:

taurus [48]3 years ago

4 0

Ilya [14]3 years ago

3 0

Answer: x=6 or x=-3

Step-by-step explanation:

x^2-18=3x

x^2-3x-18=0

(x-6)*(x+3)=0

x-6=0 x+3=0

x=6 x=-3

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What is the solution of y-4=-2(x+3)

il63 [147K]

Answer:

Step-by-step explanation:

First distribute. -2•x and -2•3

This will give you y-4=-2x+-6

(You could also write it y-4=-2x-6)

Then add 4 to both sides.

y=-2x-2

6 0

3 years ago

Question 4

skelet666 [1.2K]

Answer:

See explanation

Step-by-step explanation:

You forgot to give the coordinates of C.

Note that, the mapping for 90° clockwise rotation around the origin is given by:

$(x,y)\to (-y,x)$

Assuming the coordinates of C were (-6,6), then the coordinates of C after a 90° clockwise rotation

around the origin is (-6,-6)

8 0

2 years ago

Find the amount A accumulated after investing a principal P= $2,000 for t= 8 years at an interest rate r= 6% compounded monthly.

Ierofanga [76]

Answer:

A = 3228.2854

I = 1228.2854

Step-by-step explanation:

1 . Use the CI formula. (Reference in file.)

2. Solve equation after plugging the given information we have.

3. We will have the Amount after solving the equation.

4. To find interest we use formula A=P+I

Source - TutorEye

7 0

2 years ago

Read 2 more answers

Express each product in the simplest form. A. wx/6 B. wx/3 C. 2/3/wx D. wx

____ [38]

Answer:

A) $\frac{wx}{6}$

Step-by-step explanation:

$\frac{3wx}{6x}\cdot \frac{3wx}{9w}$

Multiply:

$\frac{3wx\cdot \:3wx}{6x\cdot \:9w}$

Cancel off the common factor "w":

$\frac{3x\cdot \:3wx}{6x\cdot \:9}$

Cancel off the common factor "x":

$\frac{3\cdot \:3wx}{6\cdot \:9}$

$\frac{9wx}{54}$

Cancel off the common factor "9":

$\frac{wx}{6}$

3 0

2 years ago

Find the area of a circle with a circumference of 18.84 units

Nata [24]

Answer:

278.773622 or 300 if rounded

Step-by-step explanation:

The area of a circle is:

π (Pi) times the Radius squared:

A = π r2

or, when you know the Diameter:

A = (π/4) × D2

or, when you know the Circumference:

A = C2 / 4π

6 0

2 years ago