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Ber [7]
4 years ago
7

What is the domain of the function?Rotate the image to see it.

Mathematics
1 answer:
sergey [27]4 years ago
5 0

Answer:

answer B is correct

Step-by-step explanation:

Hello,

this is not allowed to divide by 0 so we need to find the zeros of

x^2+2x-15=0

x^2-3x+5x-15=0\\ x(x-3)+5(x-3)=0\\ (x+5)(x-3)=0\\ x=-5 \ \  or  \ \ x=3

we need x different from -5 and from 3

answer B is correct

hope this helps

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If the triangle ABC is similar to the triangle DEF, estimate the area of triangle ABC if the area of the triangle DEF is 90
KonstantinChe [14]
Take DEF & ABC you'll get your area
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4 years ago
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What is the quotient? StartFraction n + 3 Over 2 n minus 6 EndFraction divided by StartFraction n + 3 Over 3 n minus 9 EndFracti
shepuryov [24]

Answer:

\frac{3}{2}

Step-by-step explanation:

Given the expression:

\frac{n+3}{2n-6} \div \frac{n+3}{3n-9}

We are to find the quotient as shown:

= \frac{n+3}{2n-6} \div \frac{n+3}{3n-9}  \\\\= \frac{n+3}{2n-6} \times \frac{3n-9}{n+3} \\\\=  \frac{n+3}{n+3} \times \frac{3n-9}{2n-6}\\\\= 1  \times \frac{3(n-3)}{2(n-3)}\\\\= 1 \times  \frac{3}{2} \\\\= \frac{3}{2}

Hence the correct answer is \frac{3}{2}

8 0
3 years ago
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What is (f . g) (x)?
sergeinik [125]
I think you’re answer is option 1: 3x^2+5.

Explanation:

Evaluate f(x^2+2) by substituting in the value of g into f.
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Then apply distributive property.
f(x^2+2)=3x^2+3•2-1

Then multiply 3 by 2.
f(x^2+2)=3x^2+6-1

Then subtract 1 from 6.
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6 0
3 years ago
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This Question: 1 pt
shtirl [24]
50 miles apart
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3 years ago
If f(x) = x2 − 1, and f(2a) = 35, then what could be the value of a ?
Naily [24]
<span>f(x)=<span>x2</span>−1</span>That means to find the value of the function at any value of x, we square x and subtract 1. If <span>x=2a</span>, we square <span>2a</span> and subtract 1:<span>f(2a)=(2a<span>)2</span>−1=4<span>a2</span>−1</span>Now, we know that <span>f(2a)=35</span>so we can find the value of a:<span>f(2a)=(2a<span>)2</span>−1=4<span>a2</span>−1=35</span><span>4<span>a2</span>−1+1=35+1</span><span>4<span>a2</span>=36</span><span><span>a2</span>=9</span><span><span>a=±3</span></span>
5 0
3 years ago
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