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Olegator [25]
3 years ago
9

Two lines intersect to form a linear pair with equal measures. One angle had the measure 2x and the other angle had the measure

(20y-10) find the value of x and y
Mathematics
1 answer:
rosijanka [135]3 years ago
4 0

Answer:

x = 45, y = 5

Step-by-step explanation:

It is given that two lines form a linear pair with equal measures. Therefore, the angle between the two lines will be 90. Now, according to the question,

2x + 20y - 10 =90

2x+20y = 100

x + 10y = 50

And

2x = 20y-10

x = 10y -5

x - 10 y = -5

Now, adding x + 10y = 50 and x - 10y =-5, the value of x can be found. The required value will be:

x + 10y =50

x - 10y = -5

------------------

x = 45

Therefore, the value of y after substitution of the value of x in one of the equations will be:

90 = 20y - 10

20 y = 100

y = 5

Hence, the required value of x and y are 45 and 5 respectively.

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In a certain school, students can choose whether to eat in the school’s cafeteria. A reporter working for the school’s newspaper
rosijanka [135]

Answer:

The statement that is true is B. Because students self-selected whether to eat in the cafeteria, the sampling method might be biased and the sample might not be representative of all students in the school.

Step-by-step explanation:

Because of students can decide if they eat in the cafeteria or not, the sample obtained by the reporter can be extrapolated only to the population of students that actually eat in the cafeteria, not to all students population. To make a conclusion of the degree of conformity of all students population, the poll should have been conducted in a hallway of the school (to get the opinion of all students, not only the ones that go to the cafeteria). In other way, the reporter are loosing the opinion of those students that are not happy with the new menu, and decide not going to the cafeteria.  

4 0
3 years ago
I need an answer asap thank you
AysviL [449]

Answer:

the second one is youre answer

Step-by-step explanation:

6 0
2 years ago
if 24000 bricks of the same shape and size are required to build a wall of dimensions 15m*6m*20cm ,find the volume of each brick
zepelin [54]

1800m cube to the power of 3 ans

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7 0
2 years ago
The diagram shows a 5 cm x 5 cm x 5 cm cube.
Nitella [24]

Answer:

8.7 cm

Step-by-step explanation:

The question is a 2-two-step Pythagoras theorem. (c^2 = a^2 + b^2)

Consider as such, If I were to draw a diagonal line along the base of the cube what is the length of the diagonal line. To find out that we use the theorem. We can substitute a for 5 and b for 5 as well. So

a^2 +b^2 = c^2

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Then since the line side of the cube is on a 3d angle we need to do the same process again but now using the imaginary diagonal line that we just calculated and the height (5).

a^2 +b^2 = c^2

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<em>when rounded to 1 d.p.</em>

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Line AB is 8.7 cm long.

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3 years ago
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Answer:

-75°

Step-by-step explanation:

-30°+-30°+-15°

Im one brainliest away from a rank up!

3 0
2 years ago
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