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2 years ago

Someone plz help me with number 13 on this document

Mathematics

1 answer:

alukav5142 [94]2 years ago

3 0

The answer will be -1
(4,-1)

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Find any 5 rational numbers between; a) -1 and 2 b) −3 8 −5 14

kap26 [50]

Answer:

Step-by-step explanation:

Hello,

You can list the following ones which are correct for a), b) and c)

$\boxed{\sf \bf \ \ 1, \dfrac{1}{2}, \dfrac{1}{3},\dfrac{1}{4},\dfrac{1}{5} \ \ }$

Thanks

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2 years ago

Find an equation of the plane that contains (3, 4, −9) and is parallel to x + y − 5z = 1. (Use x, y, and z for coordinates.)

emmainna [20.7K]

Answer:

x + y - 5z = 52

Step-by-step explanation:

Given data:

Point on the plane (3,4,-9)

parallel to x + y -5z = 1

Finding the normal vector

(1 , 1 , -5)(x, y , z) = 1

the normal vector is (1 , 1 , -5)

formula for finding equation the plane given the normal vector (a,b,c) and point (m,n,o) is as

a(x - m) + b(y - n) + c(z-o)=0

Substituting the data we have

1(x-3) + 1( y- 4) - 5(z+9) =0

x-3 +y -4 -5z -45 = 0

x + y - 5z = 45 +4 +3

x + y - 5z = 52

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2 years ago

Given that Triangle ABC such that a=8cm, b=7cm and c=9cm tem and c= 9cm find Cos B

charle [14.2K]

Answer:

We use cosine rule also called cosine law which states

c^2=a^2+b^2-2abcosC

given

a=8cm, b=7cm, c=9cm cos C?

9^2=8^+7^2-2*8*7 cos C

expand

81=64+49-112 cos C

like terms together

81-113=-112 cos C

-32=-112cos C

multiply both sides by -1

32=112cos C

divide both sides by 112

32/112=cos C

cosC=0.2857

find cos inverse of 0.2857

angle C= 73.40

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2 years ago

Graph a line that is perpendicular to the line y=-3x + 2 and has a y-intercept of -6.

Fiesta28 [93]

Answer:

Step-by-step explanation:

the line's equation would be

y = 1/3x -6

so just graph a line using this equation

hope this helps <3

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2 years ago

How many temperature in Biratnagar

MariettaO [177]

Answer:

Step-by-step explanation:

do you mean "what is the temperature in birantnager?"

if as of 11 am june 21 2019 it is 93° with a low of 78° fahrenheit

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2 years ago