All categories

2 years ago

Multiply and simplify. (2x - 1)(6x - 7)

Mathematics

1 answer:

Kryger [21]2 years ago

8 0

Answer:

D) 12x² - 20x + 7

Step-by-step explanation:

Use FOIL when multiplying 2 binomials...

FOIL is Firsts, Outsides, Insides, Lasts. It's the order in which you multiply the numbers in the binomials...

(2x - 1)(6x - 7)

Firsts: (2x)(6x) = 12x²

Outsides: (2x)(-7) = -14x

Insides: (-1)(6x) = -6x

Lasts: (-1)(-7) = 7

Now add them up...

12x² - 14x - 6x + 7

12x² - 20x + 7

You might be interested in

Please help. Solve for x

Andreas93 [3]

Answer:

b i just dat.

Step-by-step explanation:

8 0

2 years ago

310-(30x7)=5xk solve for k

NeX [460]

Answer K= 20/x

Step-by-step explanation:

8 0

3 years ago

If g(x) = 3 - 2x find, g(-1)

pogonyaev

Steps to solve:

g(x) = 3 - 2x when g(-1)

~Substitute

g(-1) = 3 - 2(-1)

~Simplify

g(-1) = 3 - (-2)

~Simplify

g(-1) = 3 + 2

~Add

g(-1) = 5

Best of Luck!

3 0

3 years ago

Referring to the Fig. in Question #40, find the unknown length Y.

icang [17]

Answer:

tan30°=7/x

$\frac{1}{ \sqrt{3} } = \frac{7}{x } \\ x = 7 \sqrt{3}$

cos30°=x/y

$\frac{ \sqrt{3} }{2} = \frac{7 \sqrt{3} }{y} \\ \\ 7 \sqrt{3} \times 2 = \sqrt{3} \times y \\ \frac{7 \sqrt{3 } \times 2}{ \sqrt{3} } = y \\7 \times 2 = y \\ 14 = y$

tell me if it's wrong.

7 0

2 years ago

Read 2 more answers

If 5 is an element in the domain of f(x)= 8x-21/5, what is the corresponding element in the range?

Delvig [45]

Answer:

The corresponding element in the range when 5 is an element in the domain is $f(5)=\frac{179}{5}$

Step-by-step explanation:

Given that the 5 is an element in the domain of f(x)

The function f is defined by $f(x)=8x-\frac{21}{5}$

To find the corresponding element in the range:

That is put x=5 in the given function f(x)

Therfore f(x) becomes

$f(5)=8(5)-\frac{21}{5}$

$=40-\frac{21}{5}$

$=\frac{200-21}{5}$

$f(5)=\frac{179}{5}$

Therefore corresponding element in the range when 5 is an element in the domain is $f(5)=\frac{179}{5}$

6 0

2 years ago