Evaluate f+g^2-3g if f= 5 and g=2

Mathematics

2 answers:

timama [110]3 years ago

4 0

Answer:

Step-by-step explanation:

f + $g^{2}$ - 3g

= 5 + $2^{2}$ - 3 * 2

= 5 + 4 - 3 * 2

= 5 + 4 - 6

= 9 - 6

= 3

Lady_Fox [76]3 years ago

3 0

Answer:

The answer world be 3.

Step-by-step explanation:

5 + 2² - 3(2) = 3

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Find Y <br>..............

N76 [4]

Answer:

y = 40 / sqrt(pi)

Step-by-step explanation:

The area is 400

We want to find the diameter

400 = pi r^2

Divide each side by pi

400/ pi = r^2

Take the square root of each side

sqrt(400/ pi) = sqrt(r^2)

20/ sqrt(pi) = r

The diameter is twice the radius

2 r = d

2 * 20/ sqrt(pi) = d

40 / sqrt(pi) =d

y is the diameter so

y = 40 / sqrt(pi)

4 0

3 years ago

If c(x)= 5/x-2 and d(x) = x + 3, what is the domain of (cd)(x)?

Nataly [62]

$(fg)(x)=f(x)\cdot g(x)\\\\\text{We have}\ c(x)=\dfrac{5}{x-2}\ \text{and}\ d(x)=x+3.\ \text{Substitute}\\\\(cd)(x)=\dfrac{5}{x-2}\cdot(x+3)=\dfrac{5(x+3)}{x-2}\\\\\text{Domain:}\\\\\text{The denominator must be different than zero. Therefore}\\\\x-2\neq0\to x\neq2\\\\Answer:\ \text{Domain is the set of all real numbers except 2}\to D=\mathbb{R}-\{2\}$