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3 years ago

Is it true or false

Mathematics

2 answers:

3241004551 [841]3 years ago

7 0

True.

I hope this helps you

LiRa [457]3 years ago

5 0

I’m pretty sure it’s true! Sorry if it wrong! :)

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Simplify the expression (10x + 12 - 3x) by combining like terms.

Misha Larkins [42]

Answer:

7x+12

Step-by-step explanation:

You do 10x-3x since they both have the x variable they can be combined to make 7x and the 12 is left alone.

4 0

3 years ago

Read 2 more answers

Use the function f(x) = 4x2 − 7x − 15 to answer the questions. Part A: Completely factor f(x). (2 points) Part B: What are the x

makkiz [27]

Answer:

Part A: f(x) = 4·x² - 7·x-15 = (x - 3)·(4·x + 5)

Part B: The x-intercepts are x = 3 and -1.25 #

Part C: As x approaches ∞, y approaches ∞, as x approaches -∞, y approaches ∞

Part D: The graph is a u-shaped quadratic equation graph passing though the x-intercept points -1.25 and 3 on the x-axis and the y-intercept point -15 on the y-axis. Both sides of the symmetrical graph curve extending to infinity

Step-by-step explanation:

The function 4·x² - 7·x-15

To factorize the expression, we have at the 0 factors;

$x = \dfrac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}$

Where;

a = 4, b = -7, c -15, substituting gives;

$x = \dfrac{-(-7)\pm \sqrt{(-7)^{2}-4\times 4\times (-15)}}{2\times 4} = \dfrac{7\pm 17}{8} = 3 \ or -1.25$

Which gives;

(x - 3)·(x + 1.25) = (x - 3)·(4·x + 5)

f(x) = 4·x² - 7·x-15 = (x - 3)·(4·x + 5)

Part B: The x-intercepts are the point where y = 0, which are x = 3 and -1.25 as shown above

Part C: As x approaches ∞, y approaches ∞, as x approaches -∞, y approaches ∞

Part D: With the the nature of the function as y approaches ∞ and -∞ the graph is a u-shaped graph of a quadratic equation passing though the points -1.25 and 3 on the x-axis and the point -15 on the y-axis.

6 0

3 years ago

4n -6 = 10n Simplify.

pentagon [3]

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Answer: n = -1

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add 6 to both sides of the equation.

4n − 6 = 10n

4n − 6 + 6 = 10n + 6

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simplify.

(add the numbers)

4n − 6 + 6 = 10n + 6

4n = 10n + 6

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subtract 10n from both sides.

4n − 10n = 10n + 6 − 10n

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simplify. (again)

(combine like terms) (combine like terms)

4n − 10n = 10n + 6 − 10n −6n = 10n + 6 − 10n

−6n = 6

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divide both sides by the same term.

−6n/−6 = 6/-6

n = 6/−6n = 6/−6

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simplify. (again)

(cancel terms that are in both the numerator and denominator)

n = 6/−6

(divide the numbers)

n = 6/−6

n = 1

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8 0

2 years ago

Read 2 more answers

What is the answer? 2(n + 5) = -2

Tems11 [23]

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$2(n + 5) = - 2$

Divide sides by 2

$\frac{2(n + 5)}{2} = - \frac{2}{2} \\$

$n + 5 = - 1$

Subtract sides 5

$n + 5 - 5 = - 1 - 5$

$n = - 6$

Done...

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8 0

3 years ago

Como se divide 0.75÷5 con cociente menor que 1 ayudaaaaaa

REY [17]

La respuesta correcta es .15

7 0

2 years ago