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viktelen [127]
3 years ago
7

If a(x) = 3x + 1 and b(x)=sqrt x-4, what is the domain of (b o a)(x)?

Mathematics
1 answer:
Marina CMI [18]3 years ago
8 0
Assuming that b(x) = sqrt(x-4), then (b o a)(x) = sqrt [ (3x+1) - 4 ]

3x+1-4, the input to function b(x), MUST be ≥ 0.  Therefore, 3x - 3 ≥ 0, or
3(x-1) ≥ 0, or x ≥ 1   (answer)
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Answer:

Answer: 11,272

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2 years ago
???????help for extra points
Ghella [55]

Answer:

-84 + 10i

Step-by-step explanation:

first, you want to take out the negative symbol from the square root, and we know that i = sqrt(-1) (sqrt = square root)

so the equation would look like

i x sqrt(100) - 84

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3 0
4 years ago
Read 2 more answers
Take the number you are given, double the difference between your number and 5, add four, divide by 2. If the first number is 12
ANTONII [103]

Answer:

3

Step-by-step explanation:

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*The values are created through going through the numerical process.

7 0
3 years ago
At 3:30 in the afternoon in mid-September the Kimball Tower casts a shadow about 290 feet long when the sun's rays come down at
ioda

Answer:

203 feet.

Step-by-step explanation:

Please find the attachment.

Let h represent the height of the building.

We have been given that at 3:30 in the afternoon in mid-September the Kimball Tower casts a shadow about 290 feet long when the sun's rays come down at an angle about 35 degrees above the horizontal.    

We know that tangent relates opposite side of a right triangle to its adjacent side.

\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}

Upon substituting our given values in above formula, we will get:

\text{tan}(35^{\circ})=\frac{h}{290}

290*\text{tan}(35^{\circ})=\frac{h}{290}*290

290*0.70020753821=h

h=290*0.70020753821

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h\approx 203

Therefore, the building is approximately 203 feet high.

 

3 0
4 years ago
Simplify: <img src="https://tex.z-dn.net/?f=4%5Csqrt%7B320%7D%20-%203%5Csqrt%7B80%7D" id="TexFormula1" title="4\sqrt{320} - 3\sq
aleksandrvk [35]

Answer:

20 √ 5

Step-by-step explanation:

1. You'll need to simplify each term. You'll get 32 √ 5-12 √ 5.

2. After you subtract  12 √ 5  from 32 √ 5, you'll get 20 √ 5.

8 0
4 years ago
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