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il63 [147K]
3 years ago
7

Find the value of x.

Mathematics
2 answers:
PIT_PIT [208]3 years ago
7 0

Answer:

x = 55

Step-by-step explanation:

We know that triangles add up to 180 degrees, so let's start with that. Keep in mind that "y" will be the third degree of the triangle.

21+34+y = 180

55+y = 180

y = 125

Okay, now we know that the third degree is 125. Also, the line that 125 and x are on is a straight line. All straight lines are 180 degrees. Subtract 180 and 125 to get your answer.

180-125 = 55

So your final answer will be x=55, hope this helped!

Nimfa-mama [501]3 years ago
4 0

Answer:

x=55

Step-by-step explanation:

you have to add the three angles to get 180 first. 180- 21-34=125.

then take the missing angle inside the triangle (125) and subtract by 180.

180-125=55

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The area of the trapezium is four times the area of the parallelogram. Work out the value of x
Rina8888 [55]

Answer:

2.5cm

Step-by-step explanation:

area of trapezium = 4 * area of parallelogram

1/2(a+b)*h=4* bh

1/2(5+11)*4= 4* 3.2x

8*4=4*3.2x

8/3.2=x

2.5cm=x

3 0
3 years ago
PLEASE HELP!! It's due tomorrow.
Delicious77 [7]

Answer:

Step-by-step explanation:

A. Directrix: y = 4-6 = -2

:::::

B. Axis of symmetry: x = 6

Axis of symmetry intersects directrix at (6,-2)

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C . Vertex is halfway between focus and directrix, at (6,1)

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D. The focus lies above the directrix, so the parabola opens upwards.

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E. Focal length p = 1/(4×0.5)

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F. p = 0.5

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7 0
2 years ago
Please help me idk this ???
nydimaria [60]

Answer:

64

Step-by-step explanation:

16/100 = x / 400

Cross multiply:-

100x = 16*400

x = 6400 / 100

= 64

7 0
3 years ago
Read 2 more answers
1/3 of students at a school are boys. If there are 600 students at the school, how many are girls?
Temka [501]

Answer:

200 students are boys and rest of 400 are girls

Step-by-step explanation:

Given that:

Total students = 300

1/3 students of total are boys

so.

Boys = 1/3(600)

Boys = 200

For finding number of girls:

Girls = total - boys

Girls = 600 - 200

Girls = 400

i hope it will help you!

8 0
3 years ago
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Calculate the average mass of 100 marbles that weigh 824g
Lina20 [59]

Answer:

8.24 grams/marble

Step-by-step explanation:

Average mass = (total mass)/(number of marbles)

Here, that would be:

824 g

-------------------  =  8.24 grams/marble

100 marbles

7 0
3 years ago
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