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RideAnS [48]
3 years ago
10

Simplify 21x² + 3x - 15x^2 + 9

Mathematics
1 answer:
frosja888 [35]3 years ago
8 0
6x^2+3x+9. (combine the two X^2 then the other two don’t have pairs)
You might be interested in
Josh is hiking Glacier National Park. He has now hiked a total of 17 km and is 2 km short of being half of the way done with thi
poizon [28]
Hello!

What we know so far is that Josh has hiked 17km. He is 2km short of being half way done with the hike.

To solve this, we must add 17 and 2 (to find the kilometers that he has hiked and the kilometers that he needs to hike to reach half way.)
17+2= 19

Now we know that 19km is exactly halfway in Josh's hike.
To find the total amount of km in Josh's hike, we must multiply 19 by two. (Half way times two = total amount)

19x2= 38

The total amount of kilometers in Josh's hike is 38km.

I hope this helps you!!
8 0
3 years ago
15 POINTS
tensa zangetsu [6.8K]

To find the answer, all we need to do is plug in the slope and point they gave us into the Point Slope Formula!

The point slope formula is ...

y - y_{1} = m ( x - x_{1} )

So lets put them in!

y - 4    =    2/3     (x - (-3))

Tip: remember when you subtract a negative number, it turns into adding !

So our final answer is probably D (I think you may have put a <u>typo</u>)

y - 4 = \frac{2}{3} (x + 3)

3 0
3 years ago
Pleaseee I need help on this one too
erastova [34]
I can't exactly see if the 10 at the end is negative, but I'm going to assume that it is.
10x - 6y = 8
5x - 10y = -10
= (2, 2)
} I hope this helped! {
5 0
3 years ago
Which expression can be used to check the answer to 56 divided by (negative 14) = n?
Natalka [10]

For this case we have the following expression:

\frac {56} {- 14} = n

To verify the answer we have:

Multiplying both sides of the equation by -14:

- (14) * \frac {56} {- 14} = n * (- 14)\\56 = n * (- 14)

Thus, the answer can be verified with:

56 = n * (- 14)

Answer:

56 = n * (- 14)

6 0
3 years ago
Read 2 more answers
Aramirez8989<br>...........................
inessss [21]

Answer:

yay

Step-by-step explanation:

7 0
3 years ago
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