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Nana76 [90]
2 years ago
11

PLEASE HELP I DONT UNDERSTAND!!

Mathematics
2 answers:
slega [8]2 years ago
7 0

Answer:

see explanation

Step-by-step explanation:

3x and 144 are adjacent angles on a straight line and sum to 180°

3x + 144 = 180 ( subtract 144 from both sides )

3x = 36 ← value of 3x

divide both sides by 3

x = 12

and

2y - 5 and 95 are vertically opposite angles and are congruent, so

2y - 5 = 95 ← value of 2y - 5

add 5 to both sides

2y = 100 ( divide both sides by 2 )

y = 50

Then

x + y = 12 + 50 = 62

choli [55]2 years ago
4 0

Answer:

3x = 36; 2y - 5 = 95; x + y = 62

Step-by-step explanation:

Supplementary angles add up to 180

180 = 3x + 144

36 = 3x

x = 12

Vertically opposite angles are equal

95 = 2y - 5

100 = 2y

y = 50

x + y = 12 + 50 = 62

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fgiga [73]
360 g plain flour
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4 0
3 years ago
there are 360 students in a school 162 of them are girls find the percent of girls find the percent of boys​
Ronch [10]

Answer:

Total number of students = 360

Total number of girls = 120

Total number of boys = x / ?

120/240= 1/2

50%

Step-by-step explanation: To find out the percent of the boys you first

subtract the whole amount of students which is 360 students in total to the number of girls (120) resulting 240. 240 in ratio is 1/2. 1/2 is 50%.

(Not sure, if this helps or not. I try my best to answer questions to make the asker to understand! Sorry, I tried. :c)

7 0
2 years ago
The base of a parallelogram is 18 inches longer than three times the height. The area of the parallelogram is 216 square inches.
nordsb [41]

Answer:

12 inches

Step-by-step explanation:

Let b represent the base

h represents the height

area of the parallelogram = base * height = 216 square inches

From the question'

b = 18 + 3h

Slot in the value of b

216 = (18 + 3h) * h

expand

216 = 18h + 3h^2

subtract 216 from both sides

0 = 18h + 3h^2 - 216

rearrange

3h^2 + 18h - 216 = 0

divide through by 3

h^2 + 6h - 72 = 0

Now, lets solve!

h^2 + 6h - 12h - 72 = 0

h( h + 6 ) - 12(h + 6) = 0

(h - 12) (h + 6) = 0

h - 12 = 0

h = 12

and

h + 6 = 0

h = - 6

Taking the positive value of h

Hence, the height is 12 inches

Lets check

when h = 12 inches

Area of the parallelogram = 18* 12 = 216 square inches     .... correct

when h = -6inches

A = 18 * -6 ≠  216 square inches

So height is 12 inches

5 0
3 years ago
I need help wt this pls do it asap
viktelen [127]

Answer:

7/4

Step-by-step explanation:

its d because 4/7 =7/4

6 0
3 years ago
The radius of the base of the cone is 5 cm.
makkiz [27]

4/2 3.14
or something
4 0
2 years ago
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