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amm1812
2 years ago
11

Suppose a railroad rail is 4 kilometers and it expands on a hot day by 15 centimeters in length. Approximately how many meters w

ould the center of the rail rise above the​ ground?
Mathematics
1 answer:
dsp732 years ago
3 0
Ddjdudjdjdjddjdjdjdc
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Karin wants to use the distributive property to find the value of 19·42+19·58 mentally. Which expression can she use?
katrin2010 [14]
19 * 42 + 19 * 58 =
19(42 + 58) =
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1900
7 0
3 years ago
Can you please help me on this question 8(4-x)=7x+2
kati45 [8]

Answer:

2=x

Step-by-step explanation:

8(4-x)=7x+2

Distribute

32 - 8x = 7x+2

Add 8x to each side

32 - 8x+8x = 7x+8x+2

32 = 15x+2

Subtract 2 from each side

32-2 = 15x+2-2

30 = 15x

Divide each side by 15

30/15 = 15x/15

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6 0
2 years ago
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If f(x)=8x+5, what is f(x)^-1?
Molodets [167]
F(8x+5)^-1=0.2

(8+5)^-1=0.077
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8x^-1=0.125
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3 years ago
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