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3 years ago

I Need help for this now like a real answer

Mathematics

2 answers:

motikmotik3 years ago

8 0

B.) is your answer :))

fredd [130]3 years ago

4 0

Answer:

It is either A or B but I think it is B

Step-by-step explanation:

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Find an equation of the plane passing through (0 comma negative 1 comma 1 )that is orthogonal to the planes 3xplus4ynegative 3ze

galben [10]

Answer:

The equation of plane is

$22x -3y+18z = 21$

Step-by-step explanation:

We have to find the equation of plane passing through the point (0,-1,1) and orthogonal to the planes

$n_1:3x + 4y-3z = 0\\n_2:-3x + 2y + 4z = 5$

Thus, we can write:

$n_1:\\n_2:$

We will evaluate:

$n = n_1\times n_2\\\\n = \left[\begin{array}{ccc}i&j&k\\3&4&-3\\-3&2&4\end{array}\right] \\\\n = i(16 + 6)-j(12-9) +k(6+12)\\n = 22i-3j+18k\\n =$

The required plane passes through the point (0,-1,1)

Thus, the equation of plane is

$n.=0\\\Rightarrow .=0\\\Rightarrow 22(x) -3(y+1) + 18(z-1) =0\\\Rightarrow 22x - 3y - 3 + 18z - 18 = 0\\\Rightarrow 22x -3y+18z = 21$

is the required equation of the plane.

7 0

3 years ago

Leah works at an appliance store. She recorded her recent sales. washing machines 3 dishwashers 1 ovens 6 clothes dryers 5 What

Ilia_Sergeevich [38]

Answer:

2/5

Step-by-step explanation:

Add up everything which would be 15, then put the number of ovens their was as the numerator. Then you'd have 6/15 so then just simplify!

3 0

3 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.

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

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

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

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

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

➝ $\sf{12 + 2 * {( - 4)}^{2} + 2}$

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

➝ $\text{12 + 2 * 16 + 2}$

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

➝ $\text{12 + 32 + 2}$

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

$➝ \boxed { \text{46}}$

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

$\text{Best \: regards!}$

~ $\text{TheAnimeGirl}$

7 0

3 years ago

Read 2 more answers

15. Given the side measures, which of the following could form a triangle

alexdok [17]

Answer:

6,8,9

Step-by-step explanation:

6,8,9

any sum of two sides are bigger than the third side

7 0

3 years ago

Does anyone know the answer to both these questions ???

gavmur [86]

answer for 9 is 6cm not sure about 10

5 0

2 years ago