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Aneli [31]
3 years ago
9

Simplify the answer 21/10+5/10

Mathematics
1 answer:
Softa [21]3 years ago
3 0
21/10+5/10
Add nominators since denominators are the same.
26/10
Or 2 6/10 as a mixed number.
You might be interested in
Solve each system by elimination> 9x-3y=3: 3x+8y=-17
kkurt [141]
9x-3y=3. |x3| 27x-9y=9
3x+8y=-17. |x9|27x+72y=-153
--------------------------------- -

-81y=162
y=-2


9x-3y=3
9x-3(-2)=3
9x+6=3
9x=3-6
x=-3/9
x=-⅓




x=-⅓
y=-2



7 0
3 years ago
At how many points does the graph of function below intercept the
anastassius [24]

Answer:

C. 0

Step-by-step explanation:

The points of intercection between the graph of a quadratic function of the form ax^{2} +bx+c are given by the discriminant of the quadratic formula.

Remember that the quadratic formula is:

x=\frac{-b(+/-)\sqrt{b^{2}-4ac } }{2a}

The discriminant of he quadratic formula is just the thing inside the radical, in other words:

discriminant=b^{2} -4ac

- If the discriminant is negative, the graph of the quadratic function doesn't intercept the x-axis.

- If the discriminant is positive, the graph of the quadratic function intercept the x-axis at 2 points.

- If the discriminant is 0, the graph of the quadratic function intercept the x-axis at 1 point.

We can infer form our quadratic that a=4, b=-9, and c=9, so let's replace the values in the discriminant:

discriminant=b^{2} -4ac

discriminant=(-9)^{2} -4(4)(9)

discriminant=81-144

discriminant=81-144

discriminant=-63

Since the discriminant is negative, we can conclude that the graph of the quadratic function doesn't intercept the x-axis at any point.

3 0
3 years ago
I have been struggling with this for a while lol​
kogti [31]

Answer:

  f(x) = (3x -2)(2x +1)

Step-by-step explanation:

The procedure for factoring expression of the form ...

  ax² +bx +c

is to look for factors of a·c that have a sum of b.

The product a·c is 6·(-2) = -12. You are looking for factors that have a sum of b = -1. From your familiarity with multiplication tables, you know ...

  -12 = 1(-12) = 2(-6) = 3(-4)

The sums of the factor pairs in this list are -11, -4, -1. So, the last pair of factors, {3, -4} is the one we're looking for.

__

At this point, there are several ways to proceed. Perhaps the simplest is to rewrite the linear term as the sum of terms involving these factors:

  -x = 3x -4x

  f(x) = 6x² +3x -4x -2

Now, the expression can be factored 2 terms at a time:

  f(x) = (6x² +3x) -(4x +2) . . . . . pay attention to signs

  f(x) = 3x(2x +1) -2(2x +1) . . . . factor each pair

  f(x) = (3x -2)(2x +1) . . . . . . . . factor out the common factor of (2x+1)

4 0
2 years ago
Each batch of cookies that mrs. claus makes takes 20 minutes in the oven. If the oven is on for 3 hours ,how many batches of coo
liraira [26]
You would do 3x60=180 since there is 60 minutes in each hour then dives 180 and 20 which gives you 9 batches of cookies. Hope this helps!
4 0
4 years ago
5,7,11,17,25__ find the missing number
Anton [14]
The answer is 35 please rate me the brainlest answer

5 0
3 years ago
Read 2 more answers
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