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Delvig [45]
3 years ago
14

Help me please༼ つ ◕_◕ ༽つ The value of x is ___, and the value of y is ___.

Mathematics
2 answers:
jok3333 [9.3K]3 years ago
5 0

Answer:

I think x is 60 and y is 50.

Step-by-step explanation:

70 + 50 = 120

180 - 120 = 60

x = 60

50 + 50 = 100

70 + 60 = 130

130 + 100 = 230

230 - 180 = 50

y = 50

I hope this helps u! :D

fenix001 [56]3 years ago
3 0

Answer:

x=60 y=50

Step-by-step explanation:

180 is equal to the whole triangle so 50+70=120 and 180-120= 60

the other triangle has a missing value by doing the same thing before we can figure out that the missing value is 70. 70+x which is 60 equals 130. A straight line is equal to 180 so 180-130= 50.

Hope I could help!

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In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi
lana [24]

Answer:

Confidence interval:  (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

\bar{x} = 1858 \text{ kWh}

Population standard deviation =

\sigma = 450 \text{ kilowatt-hours}

Confidence Level = 95%

Significance level = 5% = 0.05

Confidence interval:

\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)

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3 years ago
A standard number die is tossed. Find P(4 or even).
zmey [24]

Answer:

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Step-by-step explanation:

4 0
3 years ago
(x+2)-3(x-4)=6 and x=4
DENIUS [597]

Explanation:

If you plug 4 in for x into the equation, the equation becomes this:

(4+2)-3(4-4)=6

When you simplify the equation;

(6)-3(0)=6

Simplify it further,

6-0=6

That is correct. 6 = 6

Hope that answered the question.

7 0
3 years ago
What is the scintific notation of 4,497,000,000
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2 years ago
Read 2 more answers
PLEASE HELP!! <br><br> -1/3x + 1/6y = 2<br><br> 3/4x + 1/2y = -8<br><br> x = ? <br> y= ?
Alinara [238K]
If you solve this problem using the substitution method then,
X = - 8
Y = - 4
8 0
3 years ago
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