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3 years ago

Evaluate x+y+z for x=2, y=-3, Z= 4.

Mathematics

1 answer:

tamaranim1 [39]3 years ago

4 0

Answer:

Step-by-step explanation:

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Please help me! x + 6 ≤ 8

ANEK [815]

Your goal is to isolate the x variable, so all you have to do here is subtract 6 on both sides.

Your final answer is x ≤ 2.

Hope this helps a lot! :)

6 0

3 years ago

Read 2 more answers

Which expression is a cube root of -1+i√3?

Tpy6a [65]

Answer:

The correct option is C.

Step-by-step explanation:

Root Of Complex Numbers

If a complex number is expressed in polar form as

$Z=(r,\theta)$

Then the cubic roots of Z are

$\displaystyle Z_1=\left(\sqrt[3]{r},\frac{\theta}{3}\right)$

$\displaystyle Z_2=\left(\sqrt[3]{r},\frac{\theta}{3}+120^o\right)$

$\displaystyle Z_3=\left(\sqrt[3]{r},\frac{\theta}{3}+240^o\right)$

We are given the complex number in rectangular components

$Z=-1+i\sqrt{3}$

Converting to polar form

$r=\sqrt{(-1)^2+(\sqrt{3})^2}=2$

$\displaystyle tan\theta=\frac{\sqrt{3}}{-1}=-\sqrt{3}$

It's located in the second quadrant, so

$\theta=120^o$

The number if polar form is

$Z=(2,120^o)$

Its cubic roots are

$\displaystyle Z_1=\left(\sqrt[3]{2},\frac{120^o}{3}\right)=\left(\sqrt[3]{2},40^o\right)$

$\displaystyle Z_2=\left(\sqrt[3]{2},40^o+120^o\right)=\left(\sqrt[3]{2},160^o\right)$

$\displaystyle Z_3=\left(\sqrt[3]{2},40^o+240^o\right)=\left(\sqrt[3]{2},280^o\right)$

Converting the first solution to rectangular coordinates

$z_1=\sqrt[3]{2}(\ cos40^o+i\ sin40^o)$

The correct option is C.

8 0

3 years ago

sal is making bracalets for a fundraser he uses 6 inches of yarn per bracalet how many bracalets can sal make with 5 ft of yarn

Iteru [2.4K]

Answer:

10 bracelets

Step-by-step explanation:

we need to convert 5 ft to inches

1 ft = 12 inches

multiply by 5

5 ft = 60 inches

60 inches of yarn, 6 inches per bracelet

60/6 = 10

10 bracelets

6 0

4 years ago

I will mark brainliest for best answer!

UNO [17]

Answer:

a) 8 b)9 c)1 d) 3

Step-by-step explanation:

5 0

3 years ago

isaiah is making a mosaic using different pieces of tile . The tiles shown at the right are similar . If the perimeter of the la

pentagon [3]

the complete question in the attached figure

if the tiles are similar

then

the ratio r= PQ/NM=(5.8/4.64)=1.25

let

P1 ------------- > perimeter of the smaller tile

P2------------- > perimeter of the larger tile

P2= 23 cm

P2=r*P1---------- > P1=P2/r=23/1.25=18.4 cm

the answer is 18.4 cm

5 0

3 years ago