Step-by-step explanation: first you have to find the common denominator between 2 1/8 and 1 2/3. The least common denominator would be 24. The fractions turn into 2 3/24 and 1 16/24. Now you add them together which makes 3 19/24

5 0

3 years ago

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Plzzzz help me ppl maths

erica [24]

$(m + 7)(m + 3) \\ m(m + 3) + 7(m + 3) \\ m {}^{2} + 3m + 7m + 21 \\ m {}^{2} + 10m + 21$

4 0

2 years ago

The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your an

xz_007 [3.2K]

9514 1404 393

Answer:

(a) 8 km

Step-by-step explanation:

Let m represent the distance (in kilometers) Michelle has walked. Then Janet walked a distance of (m-2). These distances are at right angles, so the distance between them can be found using the Pythagorean theorem.

m² +(m -2)² = 10²

m² +m² -4m +4 = 100

2m² -4m = 96 . . . . . . subtract 4, collect terms

m² -2m +1 = 49 . . . . . divide by 2 and add 1

(m -1)² = 7² . . . . . . .write as squares

m -1 = 7 . . . . . . positive square root

m = 8

Michelle walked 8 km.

5 0

3 years ago