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3 years ago

F(x)=6x^2-x Find f(-3)

Mathematics

2 answers:

Elan Coil [88]3 years ago

5 0

Answer:

327

Step-by-step explanation:

You will plug in the -3 for x. 6 times -3 equals -18. -18 squared equals 324. 324 minus -3 equals 327.

Lera25 [3.4K]3 years ago

5 0

Answer: $f(-3)=57$

Step-by-step explanation:

Given the following function:

$f(x)=6x^2-x$

To find $f(-3)$ you need to substitute the x value $x=-3$ into the function $f(x)$ given.

Therefore, when the input value (value of the variable "x") is -3, then the ouput value is:

$x=-3\\\\f(-3)=6(-3)^2-(-3)$

Remember the multplication of signs:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-$

Then:

$f(-3)=57$

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The vertices of a triangle are as follows: (4,) (6,7) and (8,0) If you dilate the triangle by a scale factor of 3, what are the

Paraphin [41]

Given:

Consider the vertices of the triangle are (4,4) (6,7) and (8,0).

The triangle is dilated by a scale factor of 3.

To find:

The vertices of the new triangle after dilation.

Solution:

If a figure is dilated by scale factor k with origin as the center of dilation, then the rule of dilation is:

$(x,y)\to (kx,ky)$

The given figure is dilated by scale factor 3 with origin as the center of dilation, then the rule of dilation is:

$(x,y)\to (3x,3y)$

Let the vertices of the triangle are A(4,4), B(6,7) and C(8,0).

Using this rule of dilation, we get

$A(4,4)\to A'(3(4),3(4))$

$A(4,4)\to A'(12,12)$

Similarly,

$B(6,7)\to B'(3(6),3(7))$

$B(6,7)\to B'(18,21)$

And,

$C(8,0)\to C'(3(8),3(0))$

$C(8,0)\to C'(24,0)$

The vertices of the new triangle are (12,12), (18,21), (24,0).

Therefore, the correct option is 4.

7 0

3 years ago

In one week there were three rainy days and four sunny days. If a day is selected at random, what is the probability it was a su

irina1246 [14]

Answer:

0.57

Step-by-step explanation:

3:4

4/7 =0.57

3 0

3 years ago

Please assist me on this question

sergij07 [2.7K]

Answer:

x = 175 units

Step-by-step explanation:

x is to (49 + 576) as 49 is to x

x/ 625 = 49/x cross multiply

x^2 = 30625

x=175

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2 years ago

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Based on a table provided in your reading material determine the monthly payment for a $100,000 loan if the interest rate is 6%

kari74 [83]

Answer: The monthly payment on this loan would be $843.86.

Online you can find numerous loan calculators if you don't have access to the one in your reading material. All you need to do is enter the loan amount of $100,000 with a rate of 6% over the course of 15 years.

Entering these values will give a monthly payment of $843.86.

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3 years ago

Solve the following multiplication and division problems. a. 8 T. 1,398 lb. 14 oz. × 6 b. 349 lb. 6 oz. ÷ 130 c. 6 T. 294 lb. ÷

tester [92]

Answer: a) 278382 oz

b) 43 oz

c) 64.1 oz

Step-by-step explanation:

a) 8 T. 1,398 lb. 14 oz. × 6

First we need to change it in 'oz'.

As we know that

$1\ ton=32000\ oz\\\\1\ lb=16\ oz$