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3 years ago

What is the solution to the equation? 2(x – 7) = 10x + 18

Mathematics

2 answers:

enot [183]3 years ago

5 0

X equals negative 4 ( x=-4)

jarptica [38.1K]3 years ago

4 0

1. Expand2x−14=10x+18
2. Subtract 2x from both sides−14=10x+18−2x
3 Simplify 10x+18−2x to 8x+18−14=8x+18
4. Subtract 18 from both sides−14−18=8x
5. Simplify −14−18 to −32−32=8x
6. Divide both sides by 8−328 = x
7. Simplify 328 to 4−4 = x−4 = x
8. Switch sidesx = −4

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Differentiate f and find the domain of f. (enter the domain in interval notation.)f(x) = ln(x2 − 12x)derivative f '(x) = 2x−12x2

guajiro [1.7K]

F(x) = ln(x² - 12x)
The derivative is
$f'(x)= \frac{2x-12}{x^{2}-12x}$

f(x) is undefined when x² - 12x = x(x - 12) = 0
That is, when x = 0 or x = 12.
Therefore the domain is (-∞, 0)∪(0,12)∪(12, ∞)

Answer:
The derivative is
$f'(x) = \frac{2x-12}{x^{2}-12x}$
The domain is
(-∞, 0)∪(0, 12)∪(12,∞)

3 0

3 years ago

Find the slope and y intercept

zepelin [54]

Answer:

slope = -1

y intercept (0,-2)

Step-by-step explanation:

We can use the two points to find the slope

(-4,2) and (1,-3)

m = ( y2-y1)/(x2-x1)

= (-3 -2)/(1 - -4)

= -5 /(1+4)

= -5/5

- 1

The y intercept is where it crosses the y axis

y intercept is (0,-2)

5 0

2 years ago

Evaluate.

NeX [460]

Answer:

-8

Step-by-step explanation:

brackets first division second and addition third

4 0

2 years ago

Read 2 more answers

Cody Summer sells tires for tractor trailers. He earns 4.5% commission on the first $6,000 in sales, 8% commission on the next $

Vera_Pavlovna [14]

The Answer is $1,470.

8 0

2 years ago

A consumer charges a 2530.16 purchase on the credit card the card has a daily interest rate of .042% if the consumer piece of th

svp [43]

Answer:

$31.88

Step-by-step explanation:

Given

Consumer charges = 2530.16cents

Consumer charges in dollars = $25.3016

Interest rate per day = 0.042%

Interest gotten per day = 0.042×25.3016

Interest per day = $1.06266

Interest in 30 days = ,30×1.06266

Interest in 30 days = $31.88

3 0

3 years ago