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Alexxx [7]
2 years ago
14

Solve for x. Please helppp

Mathematics
2 answers:
tankabanditka [31]2 years ago
4 0

Answer:

x = 23

Step-by-step explanation:

2x + 19 + 5x = 180

I say this because it is an angle that is equivalent to the one adjacent to 2x+19, which is on a straight line. That means it is equal to 180.

7x + 19 = 180

180 - 19 = 7x

161/7 = x

x = 23

RSB [31]2 years ago
3 0

Step-by-step explanation:

5x+2x+19=180

7x+19=180

7x=180-19

7x=161

x=161/7

x=23

if u want more ans

5x

5×23

115

2x+19

2×23+19

65

hope it helps

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babunello [35]

Answer:

-7

Step-by-step explanation:

77 ÷ (-11) = -7

5 0
3 years ago
Help asap..............
MatroZZZ [7]

The common denominator for 25 and 20 would be 100

25 x 4 = 100

20 x 5 = 100

Rewrite 14/25 as 14 x 4 / 25 x 4 = 56/100

Rewrite 11/20 as 11 x 5 / 20 x 5 = 55/100

14/25 is greater than 11/20

14/25 > 11/20

3 0
3 years ago
One sign lights up every 10 seconds. One sign lights up every 12 seconds. If they have just lit up at the same time, how many se
andrew11 [14]

Answer:

It will take 60 seconds for the signs to light up at the same time again.

Step-by-step explanation:

Given:

One sign lights up every 10 seconds

One sign lights up every 12 seconds

They have just lit up at the same time.

To find in how many seconds will it take for the signs to light up at the same time again.

Solution:

In order to find the time in seconds will it take for the signs to light up at the same time again, we need to find the least common multiple of the the times for which the given signs light up.

The numbers are 10 and 12.

To find the LCM, we will list the multiples of each and check the least common multiple.

The multiples of 10 and 12 are :

10\rightarrow 10,20,30,40,50,60,70

12\rightarrow 12,24,36,48,60

thus, we can see that 60 is the least common multiple.

Thus, the signs will light up at the same time time after every 60 seconds.

7 0
3 years ago
ABCDEFGHIJ is a regular decagon and the measure of <D is 144º. What is the measure of <A?
AnnyKZ [126]

Answer:

1. 144⁰

2. 60⁰

Step-by-step explanation:

The formula to find the measure of the interior angles of a regular polygon is:

m< = (n - 2) • 180/n where n = the number of sides

For a decagon, there are 10 sides.

m< = (10-2) • 180/10 = 144°

A regular polygon/equilateral triangle is defined as having equal sides and angles.

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3 years ago
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