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3 years ago

Write the expression with fewer terms. 10x-2x

Mathematics

2 answers:

andreyandreev [35.5K]3 years ago

6 0

Answer:

It would be 8x

Step-by-step explanation:

Since 10x and -2x are like terms, you can subtract -2x from 10x to get 8x.

10x - 2x = 8x

Ivanshal [37]3 years ago

5 0

Answer:

Step-by-step explanation:

Collect like terms by subtracting their coefficients.

(10 - 2)x = 8x

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3 years ago

On the River current a canoe traveled 30 km in 3 hours and 20 min, against the current the canoe traveled 28 km in 4 hours. how

mihalych1998 [28]

Answer:

12 km

Step-by-step explanation:

Let

x km/h = speed of the canoe on the lake

y km/h = speed of the current

With the current:

Speed = x + y km/h

Distance = 30 km

Time = 3 hours 20 minutes = $3\dfrac{1}{3}$ hours

Thus,

$30=3\dfrac{1}{3}(x+y)\\ \\30=\dfrac{10}{3}(x+y)\\ \\90=10(x+y)\\ \\x+y=9$

Against the current:

Speed = x - y km/h

Distance = 28 km

Time = 4 hours

Thus,

$28=4(x-y)\\ \\x-y=7$

Add these two equations:

$x+y+x-y=9+7\\ \\2x=16\\ \\x=8\ km/h$

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3 years ago

Please help with this equation: 4.5(8-x)+36=102-2.5(3x+24)

Solnce55 [7]

answer

x=14

Step-by-step explanation:

4.5(8-x)+36=102-2.5(3x+24)

36-4.5x+36=102-7.5x-60

-4.5x=42-7.5x

7.5x-4.5x=42

3x=42

x=42/3

x=14

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3 years ago

Write the expression with fewer terms. 10x-2x​

Write the expression with fewer terms. 10x-2x