Please help!!! Me !!!

Mathematics

1 answer:

marissa [1.9K]1 year ago

8 0

(a) Continuous

(b) 75.5 KM H

(d)

(i) 89.875 KM H

(ii) 90.4

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Find the slope between these two points!

Citrus2011 [14]

Answer:

$m = \frac{d - b}{c - a} \: where \: c \ne \: a$

Step-by-step explanation:

We use the slope formula:

$m = \frac{y_2-y_1}{x_2-x_1}$

The slope or gradient is not very difficult to calculate.

The given points are:

A(a,b) and B(c,d)

We substitute these points into the formula to get:

$m = \frac{d - b}{c - a} \: where \: c \ne \: a$

Note that this is also the same as:

$m = \frac{b - d}{a- c} \: where \: c \ne \: a$

4 0

2 years ago

Please help and good night

lana66690 [7]

Answer:

(7) n = ⁴/₃

(8) x = -5

(9) d = ³/₂

(10) v = -20

Step-by-step explanation:

(7) $n-\frac{8}{9} = \frac{4}{9}$

$n-\frac{8}{9} = \frac{4}{9} \\\\Collect \ similar \ terms \ together\\\\n = \frac{4}{9} + \frac{8}{9} \\\\n = \frac{4+8}{9} \\\\n = \frac{12}{9} \\\\n = \frac{4}{3}$

(8)

$\frac{3}{2} + \ x = -\frac{7}{2}\\\\collect \ similar \ terms \ together\\\\x = -\frac{7}{2} -\frac{3}{2} \\\\x = \frac{-7-3}{2} \\\\x = \frac{-10}{2} \\\\x = -5$

(9)

$\frac{6}{5} = \frac{d}{(\frac{5}{4} )} \\\\cross \ and \ multiply\\\\5d = 6(\frac{5}{4} )\\\\5d = \frac{30}{4} \\\\d = \frac{30}{4\times 5} \\\\d = \frac{30}{20} \\\\d = \frac{3}{2} \\\\d = 1\frac{1}{2}$