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3 years ago

Simplify the expression: (4 − 7i) + (1 − 2i). 3 − 9i 3 − 5i 5 − 9i 5 − 5i

Mathematics

1 answer:

motikmotik3 years ago

6 0

Answer:

5-9i

Step-by-step explanation:

If you add the 4 and 1 you get 5, and if you add -7i and -2i since they are both negative, they stay negative, so you get -9i. So the answer is 5-9i.

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What is the answer so pwease help

bezimeni [28]

U see I would help but just because u said “pwease” I’m not :)

4 0

3 years ago

Divide 17/28 by 2/3 input your answer as a reduced fraction. HELP ASAP

vovangra [49]

Answer:

51/56

Step-by-step explanation:

Keep/Change/Flip

keepthe first fraction the same

change the division sign into a multiplication sign

flip the seond fraction upside down (in this case it would become 3/2)

6 0

3 years ago

Subtract: 6/2x^+8x - x/4x^+12x-16 = 6/2x(x+4) - x/4(x+4)(x-1) = 6•2(x-1)/2x(x+4)•2(x-1) - x•x/4(x+4)(x-1)•x

ss7ja [257]

Answer:

$\frac{-x^2+12x-12}{4x(x+4)(x-1)}$

Step-by-step explanation:

$\frac{6}{2x(x+4)}- \frac{x}{4(x+4)(x-1)}$

$\frac{6\cdot2(x-1)}{2x(x+4)\cdot2(x-1)}- \frac{x\cdot x}{4(x+4)(x-1)x}$

$\frac{12(x-1)}{4x(x+4)(x-1)}- \frac{x^2}{4x(x+4)(x-1)}$

$\frac{12(x-1)-x^2}{4x(x+4)(x-1)}$

$\frac{-x^2+12x-12}{4x(x+4)(x-1)}$

5 0

3 years ago

What is the answer of the above question in the diagram

natulia [17]

Answer: 1

Order of operations:
add first (2 + 2)
Multiply ( 2 x (4))
Divide ( 8/(8))
= 1

6 0

2 years ago

SAT question <br> Can someone explain to me what this is asking

frozen [14]

Answer:

Step-by-step explanation:

The vertex is the turning point of the parabola.

First find the zeros by equating y to zero, that is

(x - 6)(x + 12) = 0

Equate each factor to zero and solve for x

x - 6 = 0 ⇒ x = 6

x + 12 = 0 ⇒ x = - 12

The vertex lies on the axis of symmetry which is situated at the midpoint of the zeros, thus

$x_{vertex}$ = $\frac{6-12}{2}$ = $\frac{-6}{2}$ = - 3

Thus the x- coordinate of the vertex is x = - 3 → B

6 0

3 years ago