I need help with this can you plz help me plz help me badly I need your help plz help me ASAP

Mathematics

1 answer:

Reika [66]2 years ago

5 0

Answer:

A 20.8 cm

Step-by-step explanation:

The perimeter of a rectangle is

P = 2(l+w)

We know the length is 8cm and the width is 24mm

The need to be the same units to add them together

Change 24 mm * 1cm/10 mm = 2.4 cm

Substitute 8 cm for l and 2.4 cm for w

P = 2(8+2.4)

P = 2 (10.4)

P = 20.8 cm

You might be interested in

-1/2x+3=-4x+7

borishaifa [10]

Like a first step bc. there is a denominator this will be more usefully eliminate it so what you can make it multiplied both sides by 2
- so will get

-2/2x +2*3/2 = 2(-4x+7)/2

(-2x +6)/2 = 2(-4x+7)/2 common denominator the 2 so make the numerators equal and solve for x

-2x+6=-8x+14

6x=8

hope helped

5 0

2 years ago

Please answer it now

Sergeeva-Olga [200]

Answer:

s= 15 (nearest integer), 14.8 (to nearest 10ths)

Step-by-step explanation:

here you need to apply the cosine rule,

${s}^{2} = {u}^{2} + {t}^{2} - 2ut \cos(s)$