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Firdavs [7]
3 years ago
14

Find x and y. Please help this is on a test!!!

Mathematics
2 answers:
Helen [10]3 years ago
8 0

Answer:

y = 12 degrees

x = 40 degrees

Step-by-step explanation:

Triangle BDE: 3y + 54 + 90 = 180

3y + 144 = 180

3y = 36

y = 12

Line AC: angles on a straight line = 180

116 + 54 = 170

so, angle EBC = 10

Triangle BCE: 10 + 90 + 2x = 180

100 + 2x = 180

2x = 80

x = 40

ozzi3 years ago
6 0

To find the x-intercepts algebraically, we let y = 0 y=0 y=0 in the equation and then solve for values of x. In the same manner, to find for y-intercepts algebraically, we let x = 0 x=0 x=0 in the equation and then solve for y.

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A line of best fit predicts that when x equals 28, y will equal 27.255, but y actually equals 26. What is the residual in this c
zlopas [31]

Answer:

C) -1.255

Step-by-step explanation:

We are tasked to solve for the residual value given that when x equals 29, y will be equals to 27.255. But, when it is tested, y actual value is 26. The formula in solving residual is shown below:

Residual value = Observed value - predicted value

Residual value =  26 - 27.255

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The answer is -1.255 for residual value.

5 0
2 years ago
(MATH) (6) ((PHOTO))<br>label is sq yd​
Annette [7]

Answer:

<em>20 sq yd</em>

Step-by-step explanation:

To find the total amount of sq yd's of paint needed, you have to find the area.

The area of a triangle is: A = 1/2 bh

We know:

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Plug in and solve:

A = 1/2 (8) (5)

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5 0
3 years ago
Find the 23rd term of this sequence -25,-15,-5,5....
notsponge [240]

Answer:

195

Step-by-step explanation:

To find the 23rd term of this sequence, we can use the arithmetic sequence formula a_{n} =a_{1} +(n-1)d where,

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8 0
3 years ago
The average annual snowfall in king salmon, Alaska is 45.9 inches. The snow season last about 7 months of a year. About how much
Gelneren [198K]
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7 0
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Determine by inspection (i.e., without performing any calculations) whether a linear system with the given augmented matrix has
devlian [24]

Answer:

Infinitely Many Solutions

Step-by-step explanation:

Given

\left[\begin{array}{cccccc}1&2&3&4&5&6\\7&6&5&4&3&2\\8&8&8&8&8&8\end{array}\right]

Required

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When the number of variables is more than the number of non-zero rows, then such system has infinitely many solutions

i.e.

Variables > Non\ zero\ rows

5 > 3

8 0
3 years ago
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