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boyakko [2]
2 years ago
14

HELP FOR BRAINLIEST PLS!

Mathematics
1 answer:
julia-pushkina [17]2 years ago
6 0
I think the answer is 146.8 because two angles in a triangle should always add up to 180 therefore you solve the equation:
180 = 3x + 4 + 2x + 10

combine like terms.
180 = 5x + 14

get rid of the variable (14)
180 -14 = 5x + 14 - 14
166 = 5x

the divide to get x
166/5x = 33.2
33.2 = x

then you’re going to subtract your answer from 180 to get the angle measurement of the third angle, the answer you should get it 146.8

hope this helps!!
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Could somebody please help me graph this function?? 40 points <3
Verdich [7]

Answer:

root (0,0)

domain x= all reall numbers

range y= all real numbers

Vertical intercept (0,0)

4 0
4 years ago
Suppose a large shipment of compact discs contained 19% defectives. If a sample of size 343 is selected, what is the probability
Yuri [45]

Answer:

The value is  P( | \^p - p | <  0.04) = 0.9408

Step-by-step explanation:

From the question we are told that

    The population proportion is p =  0.19

   The sample size is n = 343

 Generally given that the ample size is large enough , i.e  n > 30 then the mean of this sampling distribution is mathematically represent

      \mu_{x} = p = 0.19

 Generally the standard deviation is mathematically represented as

      \sigma   =\sqrt{\frac{p(1- p)}{n} }

=>   \sigma   =\sqrt{\frac{0.19 (1- 0.19 )}{343 } }  

=>   \sigma   = 0.0212

Generally the the probability that the sample proportion will differ from the population proportion by less than 4% is mathematically represented as

        P( | \^p - p | <  0.04) = P( \frac{|\^ p - p |}{ \sigma_p } <  \frac{0.04}{0.0212 }  )

\frac{|\^ p - p |}{\sigma }  =  |Z| (The  \ standardized \  value\  of  \ |\^ p - p | )

     P( | \^p - p | <  0.04) = P( |Z| <  1.887   )

=>  P( | \^p - p | <  0.04) = P( Z <  1.887   )- P( Z <  -1.887   )

From the z table  the area under the normal curve to the left corresponding to  1.887  and  - 1.887  is

      P( Z <  1.887   )= 0.97042

and  

     P( Z <  -1.887   )= 0.02958

So

     P( | \^p - p | <  0.04) = 0.97042 - 0.02958

=>   P( | \^p - p | <  0.04) = 0.9408

3 0
3 years ago
5(3m+4)<br> Simplify the expression
KIM [24]

Answer:

15m+20

Step-by-step explanation:

5(3m+4)

5*3m, 5*4

15m+20

7 0
4 years ago
Read 2 more answers
An=5-6n fifth term and sum of first three terms
Korolek [52]

Answer:

5th term is -25

and sum of first three terms is -21

Step-by-step explanation:

We are given the sequence:

\displaystyle \large{a_n = 5 - 6n}

To find 5th term, substitute n = 5.

\displaystyle \large{a_5 = 5 - 6(5)} \\  \displaystyle \large{a_5 = 5 - 30} \\  \displaystyle \large{a_5 =  - 25}

Therefore, fifth term is 25.

Next, to find the sum of first three terms, we will introduce sigma.

\displaystyle \large{a_1 + a_2 + a_3 + ... + a_n =  \sum_{k = 1}^{n}  a_k}

Our ak is 5-6k

Since we want to find sum of first three terms:-

\displaystyle \large{ \sum_{k = 1}^{3}(  5 - 6k)}

Expand Sigma in.

\displaystyle \large{ \sum_{k = 1}^{3} 5  + \sum_{k = 1}^{3}- 6k}

<u>P</u><u>r</u><u>o</u><u>p</u><u>e</u><u>r</u><u>t</u><u>y</u><u> </u><u>o</u><u>f</u><u> </u><u>S</u><u>u</u><u>m</u><u>m</u><u>a</u><u>t</u><u>i</u><u>o</u><u>n</u>

\displaystyle \large{ \sum_{k = 1}^{n} m = m \times n \:  \:  \:  \sf{(m \:  \: is \:  \: constant})} \\  \displaystyle \large{\sum_{k = 1}^{n}(a_k + b_k) = \sum_{k = 1}^{n}a_k + \sum_{k = 1}^{n}b_k} \\  \displaystyle \large{\sum_{k = 1}^{n}ma_k =m\sum_{k = 1}^{n} a_k \:  \:  \:  \sf{(m \:  \: is \:  \: constant})}

Therefore:-

\displaystyle \large{ \sum_{k = 1}^{3} 5  + \sum_{k = 1}^{3}- 6k} \\ \displaystyle \large{ (5 \times 3) - 6\sum_{k = 1}^{3}k} \\ \displaystyle \large{ 15 - 6\sum_{k = 1}^{3}k}

<u>S</u><u>u</u><u>m</u><u>m</u><u>a</u><u>t</u><u>i</u><u>o</u><u>n</u><u> </u><u>F</u><u>o</u><u>r</u><u>m</u><u>u</u><u>l</u><u>a</u>

\displaystyle \large{ \sum_{k = 1}^{n}k =  \frac{1}{2} n(n + 1) }

Thus:-

\displaystyle \large{ 15 - 6\sum_{k = 1}^{3}k} \\  \displaystyle \large{ 15 - 6( \frac{1}{2}(3)(3 + 1) } \\ \displaystyle \large{ 15 - 6( \frac{1}{2}(3)(4)) } \\\displaystyle \large{ 15 - 6(3)(2 )} \\\displaystyle \large{ 15 - 6(6)}  \\ \displaystyle \large{ 15 -36 = - 21 }

7 0
3 years ago
Sarah wants to solve the equation 2/5 (10x-15y) +4x.What is the first step that Sarah has to take?
ValentinkaMS [17]
She would distribute the 2/5. So you would multiply both the 10x and the 15y by 2/5
8 0
3 years ago
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