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3 years ago

5

How many milligrams of medication are in 75 mL of a 2% solution? Help

1 answer:

deff fn [24]3 years ago

4 0

The answer is 23 I took the test

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A new car has a sticker price of $25,550, while the invoice price paid on it was $19.990 What is the percent amount of markup?

kupik [55]

Answer:

21.7%

Step-by-step explanation:

(25,550-19,990) / 25,550 = 5,560/25,550 = 0.217612524462 or 21.7% increase

6 0

3 years ago

Read 2 more answers

Solve the equation by factoring.<br> 3z2 + 3z – 6 = 0<br> z = 3 or z = 2

lana66690 [7]

Answer:

<u>3</u><u>z</u><u>^2 + 3z - 6 </u>=0

3

3 (z^2 + z -2) = 0

3(z+2)(z - 1) = 0

z + 2-2 = 0 - 2

z = -2

z - 1 + 1 = 0 + 1

z = 1

Step-by-step explanation:

factor out the GCF (3) and divide everything by it, and then set it equal to zero.
since you have a degree of 2, factor it into two binomials that start with the square root of the first term and end with the square root of the second term.
3=0 is extraneous solution so we leave it, then we set each binomial equal to zero to solve for z.

note: your solutions is based on the degree or the exponent of the polynomial or the function.

5 0

3 years ago

The equation of a circle is ( x - 3) 2 + ( y + 2) 2 = 25. The point (8, -2) is on the circle.

Shtirlitz [24]

Answer:

x =8 is the equation of the tangent.

Step-by-step explanation:

Here the equation of the given circle is: $(x-3)^{2} + (y+2)^{2} = 25$

Now, comparing it with the general equation of circle: $(x-h)^{2} + (y -k)^{2} = r^2$

we get the central coordinates (h,k) = (3,-2)

So, the slope of the line joining center and (8, -2) = $\frac{-2 -(-2)}{8-3} = \frac{0}{5} = 0$

Since the slope of line = 0, line is parallel to x axis.

Now, as tangent and the line is perpendicular to each other

⇒Slope of the tangent = -1/ slope of the line = $\frac{-1}{0}$

Now, by point slope formula: the equation of the tangent is

(y-y0) = m (x-x0)

or, $(y +2) = \frac{-1}{0} (x -8)$

or x =8 is the equation of the tangent.

8 0

3 years ago

3 less than the quotient of 20 and x

UkoKoshka [18]

It would be (20/x) -3

3 0

3 years ago

Simplify<br><img src="https://tex.z-dn.net/?f=%20%7Ba%7D%5E%7B%20-%202%7D%20%20%7Bb%7D%5E%7B3%7D%20" id="TexFormula1" title=" {a

DaniilM [7]

Answer:

Below

Step-by-step explanation:

● a^(-2) *b^3

●(1/a^2) *b^3

● b^3 / a^2

5 0

3 years ago