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s2008m [1.1K]
3 years ago
12

What is the value of y???

Mathematics
2 answers:
ycow [4]3 years ago
5 0
Y=5

Step By Step:
180-75-75
30
4y+10=30
4y=20
y=5

Since this is an isosceles, you know that angle B is congruent to angle C (they’re both 75°).
agasfer [191]3 years ago
3 0

Answer:

y = 5

Step-by-step explanation:

ok so we dont really need to know what x is unless they ask for it but ill do it anyways

B angle and C angle are equal so...

B = 75

75 = (3x)

75 / 3 = 25

x = 25

a triangles angles equals 180 degrees

75 + 75 = 150

180 = 150 + ?

180 - 150 = 30

A = 30 degrees

4y + 10 = 30

get the y on it's own side

4y + 10 - 10 = 4y

30 - 10 = 20

4y = 20

4y / 4 = y

20 / 4 = 5

y = 5

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7nadin3 [17]

Answer:

10635

Step-by-step explanation:

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5 0
3 years ago
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If the 1st and 10th terms of geometric sequence are 4 and 100, find the nth term of the sequence
Masja [62]

a = 4 first term, r = ?, T10 = 100.

Tn = ar^n - 1 formula for g.p

T10 = 4r^ 10 - 1

100 = 4r^9

Divide both side by 4

100/4 = 4/4r^9

25 = r^9 take the 9th root of both side

9√25 = 9√r^9

r = 9√25

To find the nth term

Since Tn = ar^n - 1

7 0
3 years ago
Find the solution of the system of equations. 3x-8y = 19<br>3x + 5y = -46<br>​
sattari [20]

(-7,-5)

Step-by-step explanation:

3x-8y = 19

minus

3x + 5y = -46

0x - 13y = 65

- 13y = 65

÷-13

y = - 5

Substitute y = - 5 into one of the functions:

3x-8y = 19

-8 x - 5 = 40

3x + 40 =19

-40

3x. = - 21

÷3

x= - 7

Solution is (-7,-5)

Hope this helps!

4 0
2 years ago
During a sale the price of a digital camera is reduced by $63 from the original price of 180 by what percentage is the price of
notka56 [123]

Answer:

63/180 = 0.35 = 35%

Step-by-step explanation:

^

4 0
2 years ago
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Anybody ? Need help.
forsale [732]
Idk what you mean ? Uh
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3 years ago
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