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MrMuchimi
2 years ago
15

2a2 + cb; a = 5, b = 11, and c = 3

Mathematics
1 answer:
devlian [24]2 years ago
6 0
Answer
53

Explanation

Calculate the product
20+3•11

Multiply the numbers
20+30

Add the numbers
53
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I don't know what's it asking me. what should I do?
Anton [14]
n - a number
n^2 - its square
n+n^2 - the sum
\leq - less than or equal
negative three - I don't have to explain this one, do I?

n+n^2\leq-3 - the sum of a number and its square is less than or equal negative three



6 0
2 years ago
Read 2 more answers
(x+3)^2 + 16/(x+3)^2 = 92 <br><br> x + 1/(x+3) = ??
Irina-Kira [14]
One
Remark

This is very complicate unless you pick the right method. It's very handy o know about substitutions.

Method
Let z = (k + 2)^2

Now the problem becomes
z + 16/z = 92           Multiply through by z 

Solution
z^2 + 16 = 92z
That does not look very promising. If you know the quadratic formula, this mess can be solved. If you do not know what the quadratic formula is, then what I've written is the answer. 

Worse yet, you have to know what complex numbers are. Is this something you know about? The z form of this equation is fine. It gives answers that are rational. The problem is that both are negative and so in your next step, you will be forced to take the square root of a negative number.

Maybe the answer is just
(x + 3)^ + 16 = 92(x + 3)^2
If all you have to do is expand this then you get
x^2 + 6x + 9  + 16 = 92(x^2 + 6x + 9) Remove the brackets.
x^2 + 6x + 25 = 92x^2 + 552x + 828  Put the left over to the right.
0 = 92x^2 - x^2 + 552x - 6x + 828 - 25
0 = 91x^1 + 546x + 803


It looks that way from the second question. If I'm wrong about that, put a comment down below.

Two
 Put over a common denominator and expand
\frac{(x + 3)^2 + 1}{(x + 3)^2}  =  \frac{x^2 + 6x + 9 + 1}{x^2 + 6x + 9} =  \frac{x^2 + 6x + 10}{x^2 + 6x + 9}
3 0
2 years ago
What is the answer to -3x - 6 + (-1)?​
Free_Kalibri [48]

Answer:

-3x - 7 is the furthest it can be simplified

6 0
2 years ago
Please answer with steps
Natali [406]
1a. 21/3+32/5
((2*3)+1)/3+((3*5)+2)/5
7/3+17/5
(7*5+17*3)/15
86/15 1b. 2/3+3/5+2/5 (2*5+3*3+2*3)/15 (10+9+6)/15 25/15 5/3 2a. 57/10-22/5 (5*10+7)/10-(2*5+2)/5 57/10-12/5 (57*1-2*12)/10 33/10 2b. 5/12-1/4 (5*1-1*3)/12 2/12 1/6 3 say she has x stamps,she gave 2/9 and 1/5 to her frends so she is left with X-2x/9-x/5 (9*5x-5*2x-9*1x)/45 (45x-10x-9x)/45 26x/45 4. 7/10+1/5 (1*7+2*1)/10 9/10 5. Brick 21/3kg Stone (2*3+1)/3-(1*10+1)/10 7/3-11/10 (7*10-3*11)/30 (70-33)/30 37/30
7 0
3 years ago
Slope is -5 and y-intercept is 12
monitta

Answer:

y=-5x+12

Step-by-step explanation:

8 0
3 years ago
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