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ddd [48]
3 years ago
7

I need help ASAP it's being timed oh and I need you to show your work! I'll give brainliest!!!

Mathematics
2 answers:
xxMikexx [17]3 years ago
7 0

47

124

Step-by-step explanation:

WITCHER [35]3 years ago
6 0
A line is 180 degrees. Right? Okay.
Although there is a line between them, both angles will sum up to 180 degrees.
So the equation will be: 3x-20+x=180
You need to isolate the variable.
First add like terms: 3x+x=4x
So then the equation is 4x-20=180
After that you add 20 to both sides because the opposite of -20 is +20, and Denver what you do on one side needs to be reappeared to the other side
4x-20=180
+20 +20
4x= 200
Dived both by 4
4x=200
/4. /4
X=50

Angles:
X=50
3(50)-20=130(angle)

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What is the solution of y-4=-2(x+3)
il63 [147K]

Answer:

Step-by-step explanation:

First distribute. -2•x and -2•3

This will give you y-4=-2x+-6

(You could also write it y-4=-2x-6)

Then add 4 to both sides.

y=-2x-2

6 0
3 years ago
Find the value of x and z
Andrew [12]

Answer:

z+150=180

z=30

then again

x+x+20+30=180

2x=180-50

2x=130

x=130/2

x=65

Step-by-step explanation:

x

7 0
3 years ago
2cos^2x = 1 <br><br> Solve for 0-360 degrees
Tems11 [23]

Answer:

45,135,315,225

Step-by-step explanation:

2cos^2x = 1

Divide each side by 2

cos^2x = 1/2

Take the square root of each side

sqrt( cos^2 x) = ±sqrt (1/2)

cos x  =±sqrt (1/2)

Make into two separate equations

cos x  =sqrt (1/2)    cos x = - sqrt(1/2)

Take the inverse cos of each side

cos ^-1 cos (x) = cos ^-1 (sqrt (1/2))   cos ^-1 cos (x) = cos ^-1 (-sqrt (1/2))

x = cos ^-1 (sqrt (1/2))   x = cos ^-1 (-sqrt (1/2))

x = 45  +360 n              x = 135+ 360n

x = 315+360 n               x =225+360n

Between 0 and 360

45,135,315,225

5 0
2 years ago
Read 2 more answers
Which two operations are needed to write the expression that represents "eight more than the product of a number and two"?
sp2606 [1]

For this case we must represent the following expression algebraically:

"eight more than the product of a number and two"

Let "x" be the variable that represents the unknown number

We have to:

the product of a number and two is represented as: 2x

Then, the full expression will be:

2x + 8

Thus, we use multiplication and addition.

ANswer:

Option C

3 0
3 years ago
Read 2 more answers
Kathleen had a bag of candy-coated chocolates. Of the 60 candies in the bag, 20% were red, 30% were orange, 30% were green, and
adelina 88 [10]
1.2 of the blue candies were damaged. Out of the 60 candies, 18 were orange (0.3 x 60) and 18 were green (0.3 x 60). 12 of the candies were red (0.2 x 60) and 12 were blue (0.2 x 60). 1.2 of these 12 blue candies were damaged (0.1 x 12).
8 0
3 years ago
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