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3 years ago

3 + x = 18 please help!!!!!!!!!!

Mathematics

2 answers:

vovangra [49]3 years ago

8 0

Step-by-step explanation:

3 + x = 18

x=18-3

x=15

Hope this helps

Ierofanga [76]3 years ago

6 0

Answer:

X=15

all you have to do is subtract 3 from 18 to get x

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Please help me out with this :)

Misha Larkins [42]

Answer:

x = 1

Step-by-step explanation:

Given that y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 12 when x = - 2, then

k = $\frac{y}{x}$ = $\frac{12}{-2}$ = - 6, thus

y = - 6x ← equation of variation

When y = - 6, then

- 6 = - 6x ( divide both sides by - 6 )

x = 1

8 0

4 years ago

An arithmetic sequence has this recursive formula: (a^1 =8, a^n= a^n-1 -6

eduard

Answer:

$a_n = 8 + (n - 1) (-6)$

Step-by-step explanation:

Given

$a_1 = 8$

Recursive: $a_{n} = a_{n-1} - 6$

Required

Determine the formula

Substitute 2 for n to determine $a_2$

$a_{2} = a_{2-1} - 6$

$a_{2} = a_{1} - 6$

Substitute $a_1 = 8$

$a_2 = 8 - 6$

$a_2 = 2$

Next is to determine the common difference, d;

$d = a_2 - a_1$

$d = 2 - 8$

$d = -6$

The nth term of an arithmetic sequence is calculated as

$a_n = a_1 + (n - 1)d$

Substitute $a_1 = 8$ and $d = -6$

$a_n = a_1 + (n - 1)d$

$a_n = 8 + (n - 1) (-6)$

Hence, the nth term of the sequence can be calculated using $a_n = 8 + (n - 1) (-6)$

3 0

3 years ago

(b) What is 0.36 (Six is Repeating) expressed as a fraction in simplest form?

Ugo [173]

A = 0.366666 ... = 0.3(6)

10a = 3.(6)
100 a = 36.(6)
100a - 10a = 36.(6) - 3.(6)
90a = 33
a=33/90=11/30
oh wait lol i didnt notice it was from 2017

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3 years ago

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Jlenok [28]

two pairs of parallel sides are equal

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3 years ago

Originally, each face of the pyramid shown to the right was a triangle with the

Bas_tet [7]

Answer:

im not sure

Step-by-step explanation:

7 0

2 years ago