<img src="https://tex.z-dn.net/?f=y%3D-2x%5E2-16z" id="TexFormula1" title="y=-2x^2-16z" alt="y=-2x^2-16z" align="absmiddle" clas

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nordsb [41]

3 years ago

s="latex-formula">

Mathematics

1 answer:

Elina [12.6K]3 years ago

5 0

Answer:

math

Step-by-step explanation:

have got a question which is as follow: Determine x,y,z∈R such that 2x2+y2+2z2−8x+2y−2xy+2xz−16z+35=0. This is a quite filthy looking equation

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To eliminate 6X you would Transform 2x by multiplying what number ?

NARA [144]

Answer:

-3

Step-by-step explanation:

to eliminate 6x we need the same no. 6x but that should be negative. so

2X × -3 = -6X

and

6X+(-6X)=0

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4 years ago

How many ways can you select pants, a shirt, and shoes if you have 5 pants, 7 shirts, and 3 pairs of shoes to choose from

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5*7*3
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4 years ago

Find the following ratios. Write each answer as a fraction and as a decimal rounded to four decimal places.

Alona [7]

Answer:

$y = 56.6208$

Step-by-step explanation:

Given

The attached triangle

Required

Find y

To find y, we make use of the relationship between sides lengths 44 & y and angle 39

The relationship is:

$cos(39) = \frac{44}{y}$

i.e.

$cos(\theta) = \frac{Adjacent}{Hypotenuse}$

Make y the subject

$y = \frac{44}{cos(39)}$

$y = \frac{44}{0.7771}$

$y = 56.6208$ -- approximated

5 0

3 years ago

100%

mel-nik [20]

Answer:

Step-by-step explanation:

2.2 IS GREATER THAN 2.01

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3 years ago

7. Assume two people, Swanson and Suzie, are standing 35 feet apart and are watching a boat

kolbaska11 [484]

Answer:

78.4 ft

Step-by-step explanation:

Part I:

Missing angle = 180° - (130 + 30) (sum of angles in a triangle)

= 180° - 160°

Missing angle = 20°

Part II: distance (d) from Swanson to the boat

Law of Sines is given as:

$\frac{a}{sin(A)} = \frac{b}{sin(B)}$

Where,

a = d

A = 130°

b = 35 ft

B = 20°

Plug in the values and solve for d

$\frac{d}{sin(130)} = \frac{35}{sin(20)}$

Multiply both sides by sin(130) to make d the subject of the formula

$\frac{d}{sin(130)}*sin(130) = \frac{35}{sin(20)}*sin(130)$

$d = \frac{35*sin(130)}{sin(20)}$

$d = 78.4 ft$

7 0

3 years ago

Read 2 more answers