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3 years ago

What is the domain of the function f(x)=x^2+3x+5?

Mathematics

2 answers:

Ugo [173]3 years ago

8 0

Answer:

all real numbers

Step-by-step explanation:

Kitty [74]3 years ago

4 0

Answer:

The domain of this function is all real numbers

Step-by-step explanation:

Unless there is a domain restriction for the function, the domain of a function is all real numbers. This means that all we need to do is determine whether there is a domain restriction.

The things that cause a domain restriction are: an x in the denominator of a fraction like $f(x)=\frac{1}{x}$ or a radical like $f(x)=\sqrt{1-x}$

As there are no variables in the denominator or a radical, we can conclude that the domain of this function is all real numbers.

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A manufacturing firm just received a shipment of 20 assembly parts, of slightly varied sizes, from a vendor. The manager knows t

kati45 [8]

Answer:

Step-by-step explanation:

Given that a manufacturing firm just received a shipment of 20 assembly parts, of slightly varied sizes, from a vendor. The manager knows that there are only 15 parts in the shipment that would be suitable.

a) The probability that the first part is suitable.

= no of suitable/total = $\frac{15}{20} =0.75$

b) the probability that the second part is also suitable/first part was suitable

= Prob that first two parts suitable/Prob first part suitable

= $\frac{\frac{15C2}{20C2} }{0.75} \\= 0.7368$

c) If the first part is suitable, find the probability that the second part is not suitable

= Prob I part suitable and second not suitable/Prob first part suitable

= $\frac{\frac{15}{20}\frac{5}{19} }{0.75} \\= 0.2632$

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3 years ago

Katryn owes her father $25.write this number as an integer.

Romashka-Z-Leto [24]

Answer:

-25

Step-by-step explanation:

When you owe someone something, in integers, your answer is in the negative.

3 0

3 years ago

How do i solve 8x + 15=63?

larisa [96]

Answer: x = 6

Step-by-step explanation:

8X + 15 = 63

-15. -15

8x = 48

8x/8 = 48/8

x = 6

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4 years ago

ine segment XY has endpoints X(–10, –1) and Y(5, 15). To find the y-coordinate of the point that divides the directed line segme

stiks02 [169]

X=(-10,-1)=(Xx,Yx)→Xx=-10, Yx=-1
Y=(5,15)=(Xy,Yy)→Xy=5,Yy=15
y=?
ratio=5:3→r=5/3
y=(Yx+rYy) / (1+r)
y=[-1+(5/3)15] / (1+5/3)
y=[-1+(5*15)/3] / [(3+5)/3]
y=(-1+75/3) / (8/3)
y=(-1+25) / (8/3)
y=(24) / (8/3)
y=24*(3/8)
y=72/8
y=9

Asnwer: T<span>he y-coordinate of the point that divides the directed line segment XY in a 5:3 ratio is y=9</span>

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jek_recluse [69]

B. 73
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