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Murljashka [212]

3 years ago

11

1/4 Luke's marbles are white,

1 answer:

deff fn [24]3 years ago

5 0

Answer:

i dont know the total sum of marbles

Step-by-step explanation:

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If y= x+3/6-x, what is the value of y when x =7i?

djverab [1.8K]

Answer:

Option (2)

Step-by-step explanation:

Given : y = $\frac{x+3}{6-x}$

If x = 7i

y = $\frac{7i+3}{6-7i}$

By simplifying denominator of the given rational expression,

y = $\frac{7i+3}{6-7i}\times \frac{6+7i}{6+7i}$

y = $\frac{(7i+3)(6+7i)}{6^2-(7i)^2}$

y = $\frac{7i(6+7i)+3(6+7i)}{36-49i^2}$

y = $\frac{42i+49i^2+18+21i}{36+49}$ [Since, i² = (-1)]

y = $\frac{63i-49+18}{85}$

y = $\frac{63i-31}{85}$

y = $-\frac{31}{85}+\frac{63}{85}i$

Therefore, Option (2) is the correct option.

3 0

2 years ago

Evaluate the given expression at x= -4<br> -3x + 2x^2 + 2

Mkey [24]

Answer:

$\huge{ \boxed{ \bold{ \text{46}}}}$

Step-by-step explanation:

If the value of variables of algebraic expression are given, the value of the term or expression can easily obtained by replacing the variables with numbers.

$\text{ \underline{ Given}} : \text{x = - 4}$

$\text{ \underline{ To \: find}} : \sf{value \: of \: - 3x + 2 {x}^{2} + 2}$

$\text{ Plug \: the \: value \: of \: x}$

$➝ \: \sf{ - 3 * (- 4 )+ 2 * {( - 4)}^{2} + 2}$

$\text{Remember!} : \text{Multiplying \: a \: negative \: integer \: by \: negative \: integer \: gives \: a \: positive \: integer.}$

➝ $\sf{12 + 2 * {( - 4)}^{2} + 2}$

$\text{Evaluate \: the \: power}$

➝ $\text{12 + 2 * 16 + 2}$

$\text{Multiply \: the \: numbers}$

➝ $\text{12 + 32 + 2}$

$\text{Add \: the \: numbers}$

$➝ \boxed { \text{46}}$

$\text{Hope \: I \: helped!}$

$\text{Best \: regards!}$

~ $\text{TheAnimeGirl}$

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3 years ago

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Work out the surface area of this cylinder.<br> Radius= 12 cm<br> Height= 35 cm

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3543.72 cm^2.

Hopefully it helped ya

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Cierto banco emplea 59 personas en dos sucursales. De esta gente, 27 son universitarios graduados. Si una cuarta parte de las pe

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Step-by-step explanation:

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