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IrinaVladis [17]
3 years ago
6

Solve x for -2x- 1 = -7

Mathematics
2 answers:
Deffense [45]3 years ago
8 0

-2x -1 = -7

add the "-1" on both sides, -2x -1 +1 = -7 +1

-2x = -6

divide "-2" on both sides, -2x/-2 = -6/-2

x = 3

Lesechka [4]3 years ago
6 0

Answer:

x = 3

Step-by-step explanation:

Add 1 on both sides.

We get:

-2x = -6

Now divide -6 by -2...

-6/-2 = 3

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Julian is using a biking app that compares his position to a simulated biker traveling Julian's target speed. When Julian is beh
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Answer:

\large \boxed{\text{11 km/h}}

Step-by-step explanation:

1. The situation after 15 min:

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15 min =¼ h  

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Julian is 2¼ km behind  the biker. The distance he has travelled is (5 - 2¼) km

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Julian has travelled 2¾ km in ¼ h.

2. Julian's average speed

\text{Speed} = \dfrac{\text{Distance}}{\text{Time}} = \dfrac{2\frac{3}{4}\text{ km}}{\frac{1}{4}\text{ h}} =\dfrac{11}{4}\text{ km}\times \dfrac{4}{\text{1 h}} = \textbf{11 km/h}\\\\\text{Julian's average speed is $\large \boxed{\textbf{11 km/h}}$}

7 0
3 years ago
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