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mrs_skeptik [129]
3 years ago
6

Help im stupid plzzzzz

Mathematics
1 answer:
Marianna [84]3 years ago
4 0

Answer:

the third option: x + 2(2x - 4) = 10

Step-by-step explanation:

the question tells you that y = 2x - 4.

so, instead of writing y in the equation, just replace it with 2x - 4.

x - 2y = 10

becomes

x - 2(2x-4) = 10

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Will give u brainlist
dusya [7]
The value of x equals 30.

Step by Step explanation:

All sides are equal so you know the angle lengths are equal. When you multiple 2x by 3 you get 6x. All angles of a triangle add up to 180 so you divide 180 by 6 and you get 30. Hope This Helps!
5 0
3 years ago
Determine if the ordered pair (6, 4) is a solution to the inequality
kvasek [131]

Answer:

A

Step-by-step explanation:

all we need to do is to plug the point (6,4) in the inequality and see if it satisfies it :

pay attention that here we have x=6  y=4

4<\frac{3}{4} (6) - 3

we simplify we get :

4<4.5-3  

4<1.5  which is incorrect  so (6,4) is not a solution. moreover

notice that 4 is > than 1.5  so the point lies above the line

thus the answer is : A

you can also solve this problem by graphing the line y=\frac{3}{4} x-3  and plotting the point (6,4)  and hence you will notice that the point is above the line

5 0
3 years ago
Read 2 more answers
What is <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B8m%7D%7Bn%7D%20%5E7" id="TexFormula1" title=" \frac{8m}{n} ^7" alt=" \fra
kifflom [539]
\bf \cfrac{8m^7}{n}\implies 8m^7n^{-1}\implies 2^3m^{3+3+1}n^{-1}\implies 2^3m^3m^3m^1n^{-1}&#10;\\\\\\&#10;2^3(m^2)^3mn^{-1}\implies (2m^2)^3mn^{-1}
7 0
3 years ago
Which pair of complex factors results in a real-number product?
Tcecarenko [31]

Answer:

1l

Step-by-step explanation:

5n

6 0
3 years ago
For each of 2 ≤ n ≤ 5, compute c(n, 0) + c(n, 2) + ⋅⋅⋅ + c(n, 2k), where 2k is largest even integer ≤ n, and compute c(n, 1) + c
Ksivusya [100]
Denote C(n,m)=\dbinom nm. Then

n=2\implies\displaystyle\binom20+\binom22=1+1=2
n=3\implies\displaystyle\binom30+\binom32=1+3=4
n=4\implies\displaystyle\binom40+\binom42+\binom44=1+6+1=8
n=5\implies\displaystyle\binom50+\binom52+\binom54=1+10+5=16

In general, it would appear that

\displaystyle\sum_{k=0}^{2\lfloor\frac n2\rfloor}\binom n{2k}=2^{n-1}

On the other hand,

n=2\implies\displaystyle\binom21=2
n=3\implies\displaystyle\binom31+\binom33=3+1=4
n=4\implies\displaystyle\binom41+\binom43=4+4=8
n=5\implies\displaystyle\binom51+\binom53+\binom55=5+10+1=16

so that in general, we also get

\displaystyle\sum_{k=0}^{2\lfloor\frac{n-1}2\rfloor+1}\binom n{2k+1}=2^{n-1}
7 0
3 years ago
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