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2 years ago

Evaluate the expression when x = 12/7

Mathematics

1 answer:

lyudmila [28]2 years ago

6 0

Answer:

Step-by-step explanation:

1/3( x+9/7) + 3^4

Let x = 12/7

1/3( 12/7+9/7) + 3^4

PEMDAS says parentheses first

1/3( 21/7) + 3^4

1/3(3) +3^4

Then exponents

1/3(3)+81

Then multiply

1+81

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A crew of highway workers paved 14 mile in 16 hour. If they work at the same rate, how much will they pave in one hour?

Novosadov [1.4K]

14 miles.....16hours
xmiles.......1hour

14x1=14
14/16=0,88 miles

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3 years ago

Plz help meh... i need it asap

kap26 [50]

Answer:

y=x

Step-by-step explanation:

In this graph, all the x values are the same as the y values

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2 years ago

Sally is making pillow covers. The last step is to add trim. She purchased 1 yard of trim, but used 3/8 of it on another project

makkiz [27]

Answer:

5/16 of a yard per pillow

Step-by-step explanation:

1. Divide 5/8 by 2 (or 2/1)

2. 5/8 * 1/2 (following the division of fraction models of 'keep, change, flip'

5*1 = 5 and 8 * 2 = 16 5/16

6 0

3 years ago

Y=3/4 x-4

pochemuha

Answer:

see graph of y=3/4 x-4

Step-by-step explanation:

Assuming you mean

$y = \frac34x - 4$

Below is a graph of that one. The slope is 3/4 and the interception with the y axis is at y=-4. The equation is in its normal form y=ax+b with a=3/4 (slope) and b=-4 (y intercept), so no conversion needed.

You have to be careful on how you write these equations down. It might very well be that you meant:

$y = \frac{3}{4x-4}$ or $y = \frac{3}{4x} - 4$

However, those are more complex so I'm hoping for the first one... ;-)

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3 years ago

Given h(x) = 3x + 4, find h(-1).

larisa86 [58]

Plug in -1 for x
h(-1) = 3(-1) + 4
h(-1) = -3 + 4
Solution: h(-1) = 1

6 0

3 years ago