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3 years ago

PLEASE HELP if you can

Mathematics

1 answer:

avanturin [10]3 years ago

5 0

The equation y--4=-2(x--1)

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I need help for algebra 2 for simplify form for example (3x-2i)(3x+2i)

grandymaker [24]

Let's start...

$(3x-2i)*(3x+2i)$

$3x*3x+3x*2i-2i*3x-2i*2i$

$9x^2+6xi-6xi-4i^2$

$9x^2-4i^2$

we don't finish it yet...

$i^2=-1$

Let's replace it

$9x^2-4*(-1)$

$\boxed{\boxed{9x^2+4}}$

6 0

3 years ago

Read 2 more answers

Find the cost of papering the four walls of a room 16m long ,12m broad and 8 metres high with paper 2 metres wide at Rs 50 per m

daser333 [38]

If it's $50 a meter, then the answer is:
x is the cost per meter
16x + 12x + 8x + 2x

But that answer is 5,075,020,100 and that is a ridiculously high number. I hope this helps even if it doesn't answer the question.

4 0

3 years ago

If 2x2+13x-7=0 then x could be equal to which of the following

ddd [48]

Answer:

x = - 7, x = $\frac{1}{2}$

Step-by-step explanation:

Given

2x² + 13x - 7 = 0

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × - 7 = - 14 and sum = + 13

The factors are + 14 and - 1

Use these factors to split the x- term

2x² + 14x - x - 7 = 0 ( factor the first/second and third/fourth terms )

2x(x + 7) - 1(x + 7) = 0 ← factor out (x + 7) from each term

(x + 7)(2x - 1) = 0

Equate each factor to zero and solve for x

x + 7 = 0 ⇒ x = - 7

2x - 1 = 0 ⇒ 2x = 1 ⇒ x = $\frac{1}{2}$

7 0

3 years ago

Quadrilateral ABCD is similar to quadrilateral A'B'C'D'. Write 2 equations that could be used to solve for missing lengths?

deff fn [24]

Answer:

Rectangle, trapezoid, quadrilateral

Step-by-step explanation:

The quadrilateral is a parallelogram with perpendicular diagonals

7 0

3 years ago

Solve for x 7 x − 4 = 6 Give your answer as an improper fraction in its simplest form.

ArbitrLikvidat [17]

Answer:

10\7

Step-by-step explanation:

7x-4=6

7x=6+4

7x=10

7x\7=10\7

x=10\7

4 0

3 years ago