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Sidana [21]
2 years ago
5

What basic math skills should I know for grade 9 math

Mathematics
2 answers:
Mariulka [41]2 years ago
6 0
You should known several math skills, everything you have learned is going to the next level in High School so you should know most math skills
UkoKoshka [18]2 years ago
4 0
Most likely rates, percents and ratios at a higher level. Also, multiplication and division of fractions at a higher level.
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What is the measure of angle 1?<br><br> A. 90<br> B. 45<br> C. Not enough info<br> D. 180
Anettt [7]

Answer:

C ig.

Step-by-step explanation:

well, it's not a right angle (90 degrees), it's not a 45 degree angle, and it's not a straight angle (180 degrees), so it's not enough info

3 0
3 years ago
Read 2 more answers
X+4 divided by x^2+16<br><br> Why can't it be simplified?
KonstantinChe [14]
Let's try to simplify x^2 + 16. It's a sum of two squares:

x^2 + 16 = 0

x^2 = -16

The problem is, we can't take a square root of a negative. This is where imaginary numbers come in.

Remember that square roots have a plus or minus symbol outside:

±√-16 = ±4i

Our two roots are 4i and -4i. Therefore, the trinomial simplifies to:

(x + 4i)(x - 4i)

If we attempt to divide x + 4 by these two binomials, we will find that 4 and 4i are not like terms. Therefore, we can't simplify this expression.
8 0
2 years ago
Which of the following expressions is equivalent to the expression x - (-3) ?
kolezko [41]
X + 3 because in math two negatives equal a positive
6 0
2 years ago
select the expression that represents the following problem: a glass hold 1/4 sliter of liquid. how many glasses of liquid are i
Alex777 [14]

Answer:

20 glasses

Step-by-step explanation:

A glass holds 1/4 liter of water so if you have 4 cups you will have 1 liter of water. If you need 5 liters than you just multiply the number of cups per liter by the number of liters

4 x 5 = 20

5 0
3 years ago
What is the solution to -18-6k=6(1+3k)?
Alexxandr [17]
I'm pretty sure that it's k = -1
3 0
2 years ago
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