Ask question

Ask question

All categories

2 years ago

10

Can some hell me understand foil for (4x-3)(x+11)

1 answer:

Naddik [55]2 years ago

7 0

Answer:

4x² + 41x - 33

Step-by-step explanation:

F in foil stands for 'first'; take the first value in each bracket and multiply them together. So 4x × x = 4x²
O in foil stands for 'outside'; take the outermost values from each bracket and multiply them together. So 4x × 11 = 44x
I in foil stands for 'inside'; take the innermost values for each bracket and multiply them together. So -3 × x = -3x
Finally, L in foil stands for 'last'; take the last value in each bracket and multiply them together. So -3 × 11 = -33
Now, we can put this all together and simplify: 4x² + 44x - 3x - 33 → 4x² + 41x - 33.

Hope this helps!

You might be interested in

9/20 + 2 9/10 or nine twentieths plus two and nine tenths

seropon [69]

So, first we have to put in an equation

9/20+ 2 9/10

multiply 9/10 by 2

So you get 9/20+ 2 18/20

Add the fractions together and you'll get 26/20

since their isn't a whole number a whole number it's just 2 and 26/20 reduce it to

2 and 9/5

I hope this is right. This is how I was taught.

6 0

4 years ago

2 cm on a map are equal to 3 km in real life. If two points are 8 cm apart on the map, how far apart are they in real life?

Andrej [43]

They are 24 km apart

3 0

3 years ago

consider gk located at g (0,0) and k (4,4). describe the dilation of gk by a scale factor of 2 centered at (-2,-4)

KonstantinChe [14]

Solution: The dilation of gk by a scale factor of 2 centered at (-2,-4) is $g'(2,4)$ and $k'(10,12)$ .

Explanation:

It is given that the scale factor is 2 and center of dilation is (-2,-4).

If the center of dilation is (a,b) with scale factor k, then the dilation of a point P(x,y) is determined by the given formula.

$D(x,y)=(a+k(x-a),b+k(y-b))$ .....(1)

To find the g' substitute x=0, y=0, a=-2, b=-4 and k=2 in equation (1).

$g'=(-2+2(2),-4+2(4))\\g'=(2,4)$

To find the k' substitute x=4, y=4, a=-2, b=-4 and k=2 in equation (1).

$k'=(-2+2(4+2),-4+2(4+4))\\g'=(10,12)$

Therefore, the dilation of gk by a scale factor of 2 centered at (-2,-4) is $g'(2,4)$ and $k'(10,12)$ .

5 0

3 years ago

Read 2 more answers

Which values of m and b will create a system of equations with no solution? Select two options.

Roman55 [17]

Answer:

2nd and 5th options

Step-by-step explanation:

the solution to a system of equations is at the point of intersection of the 2 lines.

If the lines are parallel then they never intersect and will have no solution.

The slopes m of parallel lines are equal.

The options with equal slopes , both - 2 are the

2nd and 5th options

6 0

3 years ago

What is 7/21 simplified

Mumz [18]

This would be 1/3.
(7 goes into 21, 3 times)

6 0

4 years ago

Read 2 more answers