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3 years ago

I need help with this 2(n+3) - 4 < 6 n

Mathematics

1 answer:

Harman [31]3 years ago

7 0

Answer:

Step-by-step explanation:

2(n+3) - 4 < 6n

2n+6-4 < 6n

2n + 2 < 6n

2 < 4n

½ < n

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Two trains leave towns 664 miles apart at the same time and travel toward each other. One train travels 16 mih faster than the o

Hatshy [7]

Answer:

I think that I am right. One train is traveling at 75 mph and the other train is traveling at 91 mph

Step-by-step explanation:

5 0

1 year ago

Alexa worked 30 hours last week and earned $450. Her pay has now been increased by 20%. Which equation describes her new rate of

vesna_86 [32]

Answer:

$p=18h$

$p=\dfrac{450}{30}\cdot 1.2\cdot h$

Step-by-step explanation:

If Alexa worked 30 hours last week and earned $450, then her hourly payment is

$\dfrac{\$450}{30}=\$15.$

Her payment has now been increased by 20%, so her hourly payment becomes

$\$15\cdot 1.2=\$18.$

If she worked h hours, then she earned $\$18h.$ If her new payment is p, then

$p=18h$

$p=\dfrac{450}{30}\cdot 1.2\cdot h.$

4 0

3 years ago

Y is directly proportional to the square of x.

RUDIKE [14]

Answer:

The value of y is 847 for x=11

Step-by-step explanation:

It is given that y is directly proportional to the square of x

This can be written mathematically as:

$y \propto x^2$

Removing the proportionality symbol introduces a proportionality constant in the equation which is denoted by k

$y = kx^2$

Given that "When x is 5, y is 175"

$175 = k (5)^2\\175 = k*25\\k = \frac{175}{25}\\k = 7$

Putting the value of k

$y = 7x^2$

Now putting x = 11

$y = 7(11)^2\\y = 7 * 121\\y = 847$

Hence,

The value of y is 847 for x=11

5 0

3 years ago

If y is directly proportional to x squared and y = 3 when x = 2, what is y when x = 8?

Anestetic [448]

Answer:

y = 63

Step-by-step explanation:

y is directly proportional to x²

As given,

when y = 3 => x = 2

So, 3 = 4 - 1

Which means the relation can be written as :-

y = x² - 1

Substituting x = 8

y = (8)² - 1

y = 64 - 1

y = 63

5 0

2 years ago

Read 2 more answers

If f(x)=3^x+10x and g(x)=2x-4 find (f-g) (x) (urgent)

notka56 [123]

Answer:

(f - g)(x) = $3^{x}$ + 8x + 4

Step-by-step explanation:

(f - g)(x)

= f(x) - g(x)

= $3^{x}$ + 10x - (2x - 4) ← distribute parenthesis by - 1

= $3^{x}$ + 10x - 2x + 4 ← collect like terms

= $3^{x}$ + 8x + 4

5 0

2 years ago