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topjm [15]
3 years ago
15

Suppose f(x)=x^2-1find the graph of f(3x)

Mathematics
1 answer:
RideAnS [48]3 years ago
7 0
The answer would be f(x)=9 because when you substitue the 3 in for 'x' you then square the 3.
Hope this helps!
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If you place a 10-foot ladder against the top of a 6-foot building, how many feet will the bottom of the ladder be from the bott
Anika [276]

Answer: 8 feet

Step-by-step explanation:

Draw a right triangle and label the sides using the given information. (Drawing below) Use pythagorean theorem to find the missing length:

a^2 + b^2 = c^2

(building)^2 + (missing piece)^2 = (ladder)^2

6^2 + x^2 = 10^2

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6 0
3 years ago
Choose one of the factors of x^3 + 343.
Debora [2.8K]

First, note that 343=7^3. Then use the formula for the sum of perfect cubes:

a^3+b^3=(a+b)(a^2-ab+b^2).

Therefore,

x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).

The quadratic trinomial x^2-7x+49 couldn't be factored anymore, so the expression x^3 + 343 has two factors x+7 and x^2-7x+49.

Answer: correct choice is A.

3 0
3 years ago
36. The average height of two cupboards is 1.5 metres. If cupboard B's height
Debora [2.8K]

Answer:

2m

Step-by-step explanation:

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we know that there are three metres total and 1 is half the other, so we divide 3m by 3 = 1m, the height of B,

as A = 2B, A = 2m

4 0
3 years ago
Who is good at basic math?
quester [9]
Just divide the numbers in their decimal for like 12 would be .12

8 0
3 years ago
Read 2 more answers
16. (it’s a triangle)<br> x<br> x + 4<br> X-1<br> x + 2<br> what is x?
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Answer:

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