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fgiga [73]
1 year ago
6

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

Mathematics
1 answer:
never [62]1 year ago
7 0

Answer:

 the answer is D 1+ /19;

Step-by-step explanation:

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Marian buys a dress that costs $32.00. She pays 10%
never [62]

Answer:

B, $35.20

Step-by-step explanation:

32 increase 10% =

32 × (1 + 10%) = 32 × (1 + 0.1) = 35.2

4 0
2 years ago
Read 2 more answers
What are the steps to solve an inequality like: |n + 8| > 3 ??????
SCORPION-xisa [38]

|n+8|>3\iff n+8>3\ \vee\ n+8-5\ \vee\ n

6 0
3 years ago
How can you use place value and period names to read and write 324,904 in word form
N76 [4]
The number is read as three-hundred twenty four thousand nine-hundred four
5 0
3 years ago
Y=sin(1/2x) what would this look like on a 2pi graph
Andrew [12]
Just plot it and you get something like this ...

6 0
2 years ago
Solve the system by substitution math help. Please show every step.
Arlecino [84]
The idea here is to combine the equations into one in only one variable. The last equation is in only x and z so lets sub out y in the second.

-x - y - z = -8
8 - x - z = y

Substitute y with (8 - x - z) into the next equation.
-4x + 4(8 - x - z) + 5z = 7
-4x + 32 - 4x - 4z + 5z = 7
-8x + 32 + z = 7
 The variable z is easiest to get alone; use that as substitution in the last equation.
z = 7 + 8x - 32
z = 8x - 25

Substitute z with (8x - 25)
2x + 2(8x - 25) = 4
2x + 16x - 50 = 4
18x = 4 + 50
18x = 54
x = 3

So use x = 3 in that  last equation to find z.

2(3) + 2z = 4
6 + 2z = 4
2z = 4 - 6
2z = -2
z = -1

Now, use both x = 3 and z = -1 to find the final variable y.

-3 - y - (-1) = -8
-3 - y + 1 = -8
-2 - y = -8
-y = -8 + 2
-y = -6
y = 6

Solutions x,y,z = ( 3, 6, -1)


5 0
3 years ago
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