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1 year ago

Evaluate the function. f(x) = x² - 4x – 12 Find f(-7)

Mathematics

1 answer:

pashok25 [27]1 year ago

7 0

Answer:

Your answer is 65

Step-by-step explanation:

f(x) = x² - 4x - 12

f(-7) = (-7)² - 4 x (-7) - 12

= 49 - (-28) - 12

= 49 + 28 - 12

= 77 - 12

= <u>65</u>

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428 is greater to or less or equal to 3 hundred 12 tens 8 ones

VLD [36.1K]

Answer:

428 is equal to 428

Step-by-step explanation:

300 + 120 = 420 + 8 = 428

6 0

3 years ago

hi so i have no idea what combining like terms means, or how to do it. can someone help explain, with examples?

Marina CMI [18]

Answer:

Combining like terms is a mathematical process used to simplify an expression or to add or subtract polynomials.

Step-by-step explanation:

How do I combine like terms?

1. Step 2: Combine the coefficients.

2. 5h + 11g + 1h - 8g.

3. (5 + 1)h + (11 - 8)g.

4. 6h + 3g.

5. Step 1: Organize your like terms.

6. 5x + 8x + 10x2 - 7x2 - 4x.

7. Step 2: Combine the coefficients. (5 + 8 - 4)x + (10 - 7)x2 9x + 3x2

3 0

2 years ago

Read 2 more answers

Help a fellow out please

Liula [17]

Answer:

24.27 cm

Step-by-step explanation:

sin 65 degrees = 22/x, so:

1 x

------------------ = ------

sin 65 deg 22

so x = 22 / (sin 65 deg) = 22/0.906 = 24.27 cm

8 0

2 years ago

6,666,666×666,666 /1+2+3+4+5+6+5+4+3+2+1 − 777,777×777,777/1+2+3+4+5+6+7+6+5+4+3+2+1

jeka57 [31]

Answer:

111111 $\times$ 1111110 is the simple expression.

Step-by-step explanation:

The expression to be solved:

$\dfrac{6,666,666\times666,666 }{1+2+3+4+5+6+5+4+3+2+1} - \dfrac{777,777\times777,777}{1+2+3+4+5+6+7+6+5+4+3+2+1}$

First of all, let us solve the first term:

$\dfrac{6,666,666\times666,666 }{1+2+3+4+5+6+5+4+3+2+1}\\\Rightarrow \dfrac{6666666\times666666 }{36}\\\Rightarrow \dfrac{6666666\times666666 }{6\times 6}\\\Rightarrow 1111111\times 111111$

Now, the right term:

$\dfrac{777777\times777777}{1+2+3+4+5+6+7+6+5+4+3+2+1}\\\Rightarrow \dfrac{777777\times777777}{49}\\\Rightarrow \dfrac{777777\times777777}{7 \times 7}\\\Rightarrow 111111 \times 111111$

So, the expression to be solved becomes:

$1111111\times 111111-111111\times 111111\\\Rightarrow 111111(1111111-1)\\\Rightarrow 111111\times 1111110$

3 0

2 years ago

Plsss help me I don’t understand!!

inna [77]

Answer:

Step-by-step explanation:

in the "score" section all you do is add all them up. And because there is a negative for ALL the numbers, all you do is add a negative after you add all the SCORES

6 0

3 years ago