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2 years ago

Which of these is a correct expansion of (4x - 2)(2x2 + 3)?

Mathematics

1 answer:

Neporo4naja [7]2 years ago

5 0

Answer:

a correct expansion is B

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Simplify the polynomial 3x5-2x+4-x5+x2

MariettaO [177]

Answer:

-65 is answer if we will solve it then it will be answer

4 0

2 years ago

48% of 30 is ABOUT. What number. This is a estimation with percent

drek231 [11]

14.4 rounds to about 14 as a percentage that is 14%

3 0

3 years ago

5c + 16.5 = 13.5 + 10c c =

olga55 [171]

Answer:

3/5 or 0.6

Step-by-step explanation:

− 5 c + 16.5 = 13.5

− 5 c = − 3

c=3/5

c=0.6

4 0

3 years ago

Given the trinomial 2x2 + 4x + 4, predict the type of solutions.

rodikova [14]

Trinomial 2x² + 4x + 4.

It's of the form ax²+bx+c and it's discriminant is Δ=b² - 4.a.c

(in our case Δ = 4² - (4)(2)(4) → Δ = - 32

We know that: x' = -1 + i and x" = -1 - i

If Δ > 0 we have 2 rational solutions x' and x"

If Δ = 0 we have1 rational solution x' = x"

If Δ < 0 we have 2 complex solutions x' and x", that are conjugate

In our example we have Δ = - 16 then <0 so we have 2 complex solutions

That are x'= [-b+√Δ]/2.a and x" = [-b-√Δ]/2.a

x' =

4 0

3 years ago

Read 2 more answers

What is the Value of x+y ? PLZ Help ASAP

Natalija [7]

ANSWER

$x + y = 60$

EXPLANATION

Method 1

Vertically opposite angles are equal, therefore

$3x + 55 = 85$

This implies that,

$3x = 85 - 55$

We simplify to get,

$3x = 30$

Dividing through by 3 gives,

$x = 10$

Also,

$2y - 5 = 95$

This implies that,

$2x = 95 + 5$

We simplify the right hand side to get,

$2x = 100$

We divide both sides both sides by 2 to get,

$x = 50$

$x + y = 50 + 10$

$x + y = 60$

Method 2

Angles on straight line sums to 180°.

$2y-5+85=180$

This implies that,

$2y+80=180$

$2y=180-80$

$2y=100$

$y=50$

Also,

$3x+55+95=180$

$3x+150=180$

$3x=180-150$

$3x=30$

$x=10$

$x+y=50+10$

$x+y=60$

7 0

2 years ago

Read 2 more answers