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choli [55]
3 years ago
11

Help anyone 8th grade math?

Mathematics
2 answers:
Kruka [31]3 years ago
7 0

Answer: x = 1

Step-by-step explanation:

2.8 + 2x = 0.6 x 8

2.8 x + 2x = 4.8

2x = 4.8 - 2.8 (subtract 2.8 on both sides)

2x = 2

x = 1 (divide 2 on both sides)

Hope this helps

Rina8888 [55]3 years ago
3 0
The guy above me is right
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b

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Write a rule for the linear function with the following description: the graph contains the points (3,-2) and (3,0),
Maslowich

Answer:

x - 3 = 0

Step-by-step explanation:

You can realise it plotting the points.

Or you can use : ( x - x1 ) / ( y - y1 ) = ( x1 - x2 ) / ( y1 - y2 )

where ( x1 , y1 ) and ( x2 , y2 ) are the given points.

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What are the vertex, axis of symmetry, domain and range of the function:
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Y=(-x*x)-4x+3
y=-(x^2+4x-3)
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3 0
3 years ago
Ralph and Jody go to the store to buy chips and candy bars. Ralph buys 3 bags of potato chips and 4 candy bars for 375 cents. Jo
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3x+4y = 375
6x+ 4y= 600
-------------------
6x-3x  = 600 - 375

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3 0
3 years ago
Nitric acid (specific gravity 1.42) costs $51.95 per liter. A student spills 5.112 kg of nitric acid in the laboratory, what is
Leno4ka [110]

Answer:

The cost of wasted nitric acid is $187.02

Step-by-step explanation:

Since it is given that specific gravity of Nitric Acid is 1.42 Thus the density of nitric acid is

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\rho =\frac{Mass}{Volume}\\\\\therefore Volume=\frac{Mass}{\rho }

Since the mass of the nitric acid is given to be 5.112 kg = 5112 grams

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Now we know that 1000 cubic centimeters euals 1 litrer

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Thus the cost of acid spilled  equals

Cost=3.6\times 51.95=187.02

5 0
3 years ago
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