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faltersainse [42]
3 years ago
13

BRAINLY TO WHOEVER HELPS ASAP

Mathematics
1 answer:
Dafna1 [17]3 years ago
5 0

Answer:

l=-5,-2

m=-3,-3

n=-6,-6

Step-by-step explanation:

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Find the value of x.<br> (3x+20) º<br> 12°
PolarNik [594]

Answer:

x=32°

Step-by-step explanation:

2x+3x+20=180 co interior angle

5x=180-20

x=160/5=32°

7 0
3 years ago
Read 2 more answers
A cube has a side length of 5xcm. What is the volume of the cube?<br>no links please.​
finlep [7]

Answer:

125 cm

Step-by-step explanation:

V=lwh

all cube has the same length, width, height

5 * 5 * 5 = 125

Hope this helps

7 0
3 years ago
Consider the following polynomial functions.<br> f(a) = (2a - 7 + a?) and g(a) = (5 – a).
mote1985 [20]

Answer:

1 false

2 true

3 true

4 false

5 true

Step-by-step explanation:

f(a) = (2a - 7 + a^2) and g(a) = (5 – a).

1 false f(a) is a second degree polynomial and g(a) is a first degree polynomial

When added together, they will be a second degree polynomial

2. true  When we add and subtract polynomials, we still get a polynomial, so it is closed under addition and subtraction

3.  true  f(a) + g(a) = (2a - 7 + a^2) + (5 – a)

Combining like terms = a^2 +a -2

4.  false   f(a) - g(a) = (2a - 7 + a^2) - (5 – a)

Distributing the minus sign (2a - 7 + a^2) - 5 + a

Combining like terms  a^2 +3a -12

5.  true  f(a)* g(a)  = (2a - 7 + a^2)  (5 – a).

Distribute

                       (2a - 7 + a^2)  (5)  – (2a - 7 + a^2)  (a)

                        10a -35a +5a^2 -2a^2 -7a +a^3

Combining like term

-a^3 + 3 a^2 + 17 a - 35

4 0
3 years ago
Read 2 more answers
I need help!!!
BaLLatris [955]

(1) -6 x + 8 x = -46 Answer = -23

(2) w + 3/4 = w - 2/2 Answer = {}

(3) 2 x + 16 = 3(x - 9) Answer = 43

(4) Answer D)

(5) -3 x + 4 = -8 Answer x = 4

(6) C)

(7) B)

(8) C)

(9) x + 3/5=2 Answer x = 7/5

(10) 4 - 2 x = 10 Answer x=  = -3

If something is wrong apologize, I hope it helps.


6 0
4 years ago
What is the missing term (10-4x^2)-(7x+?) =3x-6x^2
Yuliya22 [10]
Hello,

(10-4x²)-(7x+?)=3x-6x²
==>10-4x²-7x-3x+6x²=?
==>?=2x²-10x+10

8 0
4 years ago
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