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3 years ago

Need help please help its imporant

Mathematics

2 answers:

sertanlavr [38]3 years ago

4 0

X=20 is the answer.........

Anestetic [448]3 years ago

3 0

Answer:

x = 20

Step-by-step explanation:

Let's look at the first parallel lines (the ones with one arrow).

Because both these lines are parallel, we can say that (3x + 2) and (4x - 18) are equal due to the alternate interior angles theorem.

So we have to make both of these expression equal to each other, and then solve:

3x + 2 = 4x - 18

-x = - 20

x = 20 < --- this is your answer

Hope this helps!

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PLSSSSSSSSSSSSS HELP

Fittoniya [83]

Answer:

A=146

Step-by-step explanation:

0.15*146=21.9

28.1+21.9=50

3 0

3 years ago

Trudy is starting a comic book collection. Let Cn represent the number of comic books that Trudy has after n weeks. The recursiv

vitfil [10]

Answer:

(A)

$C_n=3+2n$

(B)

$C_1_0=23$

Step-by-step explanation:

(A)

we are given

$C_n_+_1=C_n+2$

$C_1=5$

Firstly, we will find few terms

$C_2=C_1+2$

$C_2=5+2$

$C_2=7$

$C_3=C_2+2$

$C_3=7+2$

$C_3=9$

$C_4=C_3+2$

$C_4=9+2$

$C_4=11$

so, we will get terms as

5, 7 , 9 , 11

we can see that this is arithematic sequence

First term =5

common difference =d=7-5=2

now, we can use nth term formula

$C_n=C_1+(n-1)d$

now, we can plug values

$C_n=5+2(n-1)$

$C_n=5+2n-2$

$C_n=3+2n$

(B)

we can plug n=10

$C_1_0=3+2\times 10$

$C_1_0=23$

8 0

3 years ago

What is -14n+1=rt-4n, solving for n

Korvikt [17]

Answer: n = -rt/10 + 1/10

Explanation: isolate the variable by dividing each side with the factors that don’t contain n, then isolate n to get this answer.

Hope this helps!

4 0

3 years ago

Which set of ordered pairs could represent a function? (2, 3), (2, 2), (2, 4), (2, 9), (2, –2) (1, 5), (2, 6), (1, 6), (4, 5), (

Ratling [72]

Given:

The set of ordered pairs in the options:

(a) (2, 3), (2, 2), (2, 4), (2, 9), (2, –2)

(b) (1, 5), (2, 6), (1, 6), (4, 5), (1, 4)

(d) (5, 1), (7, 3), (9, 5), (11, 7), (13, 9)

To find:

The set of ordered pairs that could represent a function.

Solution:

A set of ordered pairs represent a function, if there exist unique output (y-value) for each input (x-value).

In option (a) we have, five output values y=3,2,4,9,-2 for single input x=2. So, it is not a function.

In option (b) we have, three output values y=5,6,4 for single input x=1. So, it is not a function.

In option (c) we have, two output values y=0,3 for single input x=1. So, it is not a function.

In option (d), all inputs has unique output.

Therefore, the correct option is (d).

4 0

3 years ago

Read 2 more answers

A real-estate company appraised the market value of 36 homes in Lyttelton and found that the sample mean and standard deviation

pantera1 [17]

Solution :

Sample size Sample mean Sample S.D.

Sample 1 $n_1=36$ $\bar{x}_1=150,000$ $s_1=17,000$

Sample 2 $n_2=45$ $\bar{x}_2=100,000$ $s_2=12,000$

$df = \frac{\left(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}\right)^2}{\frac{1}{n_1-1}\left(\frac{s_1^2}{n_1}\right)^2+\frac{1}{n_2-1}\left(\frac{s_2^2}{n_2}\right)^2}$