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Vinvika [58]
3 years ago
9

1. The interior angles of a triangle have measures of 55°, 25°, and x What is x?

Mathematics
1 answer:
Ivanshal [37]3 years ago
3 0
X=100 hope this helps
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zalisa [80]

Answer:

10

Step-by-step explanation:

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2 years ago
How do you pass algebra class
Kamila [148]

Take notes and pay attention since just slacking off for only 10 minutes can get you behind and struggling.

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3 years ago
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Fantom [35]
1) (-7,2)
y=2, -x+4=11, -x=11-4=7, x=-7

2) (-3,4)
-x+2y=11
y=4, -x+8=11, -x=3, x=-3

3) (1,6)
-x+2y=11
y=6, -x+12=11,-x=-1, x=1
4 0
3 years ago
If f(x) = -x + 5 and g(x) = x^2, what is (g*f)(-1)
sasho [114]

Answer:

6

Step-by-step explanation:

(g × f)(x) = g(x) × f(x) = x²(- x + 5)

To evaluate (g × f)(- 1) substitute x = - 1 into the product

x²(- x + 5)

= (- 1)²(- (- 1) + 5)

= 1(1 + 5)

= 1 × 6 = 6

5 0
3 years ago
Find the standard deviation of 21, 31, 26, 24, 28, 26
Vesnalui [34]

Given the dataset

x = \{21,\ 31,\ 26,\ 24,\ 28,\ 26\}

We start by computing the average:

\overline{x} = \dfrac{21+31+26+24+28+26}{6}=\dfrac{156}{6}=26

We compute the difference bewteen each element and the average:

x-\overline{x} = \{-6,\ 5,\ 0,\ -2,\ 2,\ 0\}

We square those differences:

(x-\overline{x})^2 = \{36,\ 25,\ 0,\ 4,\ 4,\ 0\}

And take the average of those squared differences: we sum them

\displaystyle \sum_{i=1}^n (x-\overline{x})^2=36+25+4+4+0+0=69

And we divide by the number of elements:

\displaystyle \sigma^2=\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n} = \dfrac{69}{6} = 11.5

Finally, we take the square root of this quantity and we have the standard deviation:

\displaystyle\sigma = \sqrt{\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n}} = \sqrt{11.5}\approx 3.39

8 0
3 years ago
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