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Setler79 [48]
3 years ago
7

( 10 x 4 + 3 x 2 − 5 x + 4 ) + ( 7 x 5 − 5 x 4 + 2 x − 9 ) Add/subtract the polynomial

Mathematics
1 answer:
Allisa [31]3 years ago
6 0

Answer:

78

Step-by-step explanation:

I say 78 because ( 10×4+3×2-5+4)+(7×5-5×4+2×9= 78 there you go hope this helps

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Please help me answer. Thanks in advance.
Aleksandr [31]
  72kg - 54kg
180kg - xkg

cross multiply

72 · x = 180 · 54

72x = 9720    |divide both sides by 72

x = 135

Answer: 135kg.


8 0
3 years ago
Two angles form a
Alex777 [14]

Answer:

45° and 135°

Step-by-step explanation:

A linear pair of angles sum to 180°

let one angle be x , then the other is 3x ( 3 times the other ), thus

x + 3x = 180

4x = 180 ( divide both sides by 4 )

x = 45

Thus the 2 angles are

x = 45° and 3x = 3 × 45° = 135°

5 0
3 years ago
PLEASE HELP FAST <br><br>WILL MARK BRAINLIST
liq [111]

Answer:

1, (c) 2,(c) 3,(a)

Step-by-step explanation:

1, f (x) = 2-x and f(2) = 2-2

for example f(-4) = 2-(-2) = 0

=4

3, 120° - 60° = 60

5 0
2 years ago
Can anyone help with the statements and reasons have been on this for a while :/
Bumek [7]

Answer:

statement: 2. both pairs of parallel lines are congruent

reason: 2. def. of a parallelogram

and that should be all you need

4 0
3 years ago
Verify the identity <br> cos ( x + pi/2) = -sin x
IgorLugansk [536]
Hello 
cos ( x + pi/2) =cos(x)cos(pi/2)-sin(x) sin(pi/2) 
                       = cos(x)×0-sin(x) ×1
                    cos ( x + pi/2)   = - sin(x)
3 0
3 years ago
Read 2 more answers
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