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3 years ago

8

Adding & subtracting decimals word problems

1 answer:

Gennadij [26K]3 years ago

4 0

Answer:

7.17 km

Step-by-step explanation:

please like my answer and brainliest me......huhu

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If AD = 5x - 7 and AB = 2x +11, what is the length of AD

Norma-Jean [14]

Answer:

The length of AD is 6.

Step-by-step explanation:

Solve.

$5x - 7 = 2x + 11 \\ \frac{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: - 2x \: \: \: \: \: \: = - 2x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }{3x - 7 = 11} \\ \frac{ \: \: \: \: \: \: \: \: \: + 7 = + 7}{3x = 18} \\ \\ \frac{3x}{3} = \frac{18}{3} \\ \\ x = 6$

Now plug in:

$5x - 7 \\ 5(6) - 7 \\ 30 - 7 \\ 23$

^Therefore, your result^

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3 years ago

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Step-by-step explanation:

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3 years ago

Solve the system by Substitution

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Step-by-step explanation:

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3 years ago

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2 years ago

Of the following options, what could be a possible first step in solving the equation 8x + 3 = 2x - 15

Basile [38]

The first step can be subtracting 2x from both sides leaving the equation with 6x + 3 = -15

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3 years ago