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Lilit [14]
2 years ago
9

Find the measure of angle A.(First solve for x, then plug it into 9x+4 to get the final answer!)​

Mathematics
1 answer:
Iteru [2.4K]2 years ago
8 0

Answer:

40 degrees

Step-by-step explanation:

Sum of all angles of triangle is 180 degrees.

So, 80+(9x+4)+(16x-4)=180

80+25x=180

25x=100 -> x=4

So angle A = 9(4)+4= 40 degrees

You might be interested in
What percent is equivalent to 1230? A12% B30% C40% D60%
Reptile [31]
To find the percentage of 12/30 you simply have to divide 12 by 30, and then multiply it by 100

(12/30)100

(0.4)100

40%

C) 40% is your answer

Hope this helps!
6 0
3 years ago
What is the unit rate of 420$ for 12 tickets
AlladinOne [14]

$35 per ticket

the unit rate means the cost of 1 ticket

divide $420 by 12 for unit rate

\frac{420}{12} = $35 per ticket



5 0
3 years ago
The value of a collector’s item is expected to increase exponentially each year. The item is purchased for $500. After 2 years,
Andreyy89
Y = 500(1 + r)^x; where r is the rate and x is the number of years.
500(1 + r)^2 = 551.25
(1 + r)^2 = 551.25/500 = 1.1025
1 + r = sqrt(1.1025) = 1.05

Therefore, the equation that represents y, the value of the item after x years is
y = 500(1.05)^x
7 0
4 years ago
Help, please Ill mark brainliest!
aev [14]

Answer:

the answers are 12.5, 5, 2, 0.8 and 0.32

Step-by-step explanation:

2(0.4)^-2

=2(6.25)

= 12.5

2(0.4)^-1

= 2(2.5)

=5

2(0.4)^0

=2(1)

=2

2(0.4)^1

=2(0.4)

=0.8

2(0.4)^2

=2(0.16)

=0.32

4 0
3 years ago
Make L the subject of the formula T=2π√L\G​ ​
Alinara [238K]

Answer:

L=(\frac{TG}{2\pi })^2

Step-by-step explanation:

T=2\pi \sqrt{L}/G

TG=2\pi \sqrt{L}

\frac{TG}{2\pi } =\sqrt{L}

(\frac{TG}{2\pi })^2 =L

6 0
3 years ago
Read 2 more answers
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