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storchak [24]
3 years ago
10

What is the solution of the equation z +8 = 21?

Mathematics
2 answers:
Anit [1.1K]3 years ago
8 0

Answer: 13

Explanation:

21-8=13

Mumz [18]3 years ago
4 0
13. Subtract 8 from each side.
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Please help!!! Only need help with number 4
Harman [31]
With the symbols given us the symbol for ten and use the symbol for zero 3 times
5 0
3 years ago
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What is the solution to |x + 2| < 1?
Katyanochek1 [597]

Answer:

-3 <x <-1

Step-by-step explanation:

|x + 2| < 1

There are two solutions, one positive and one negative ( remember to flip the inequality for the negative)

x+2 <1    and  x+2 > -1

Subtract 2 from each side

x+2-2 < 1-2  and  x+2-2 > -1-2

x < -1      and       x >-3

-3 <x <-1

8 0
3 years ago
Rationalize the expression. Write it in simplest form.<br><br> 9x/√-2x-11
GenaCL600 [577]
This appears to be just an expression we are simplifying, not an equation we are solving.  I THINK you are saying that the expression looks like this:
\frac{9x}{ \sqrt{-2x-11} }
If you rationalize the denominator, you would get this expression:
\frac{9x}{ \sqrt{-2x-11} } * \frac{ \sqrt{-2x-11} }{ \sqrt{-2x-11} }
which, after simplifying, looks like this:
\frac{9x \sqrt{-2x-11} }{-2x-11}
and that's as simple as I can see that one getting.  You can't factor anything out of the denominator to cancel with the numerator, so I think you're as simple as you can get there!
3 0
3 years ago
I need help I’m having so much trouble with this
sergeinik [125]

Answer: Decimal Form:   4.47213595 …

3 0
3 years ago
Solve for (y)(x)<br> x-y=1<br> 1/2x+y=5
TEA [102]
Using addition

x-y+1/2x+y=1+5
x+1/2x+0y=6
3/2x=6
\frac{3}{2}x=6
3x=12
x=4

Using the value of x
x-y=1
4-y=1
y=3

With x as 4 and y as 3, their product is 12
And can be written as (4,3)
6 0
3 years ago
Read 2 more answers
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