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3 years ago

Kx - c = 9 solve for x

Mathematics

2 answers:

Gennadij [26K]3 years ago

8 0

Answer:

x = $\frac{9+c}{k}$

Step-by-step explanation:

Given

kx - c = 9 ( add c to both sides )

kx = 9 + c ( isolate x by dividing both sides by k )

x = $\frac{9+c}{k}$

Lesechka [4]3 years ago

3 0

You start by isolating the variable by dividing each side by factors that don’t contain the variables
therefore your answer would be x = 9/k + c/k

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Which of the following numbers is irrational?<br> Select all that apply.

MAXImum [283]

The square root of 15 and 3 are irrational because they are decimals and is not a whole number

4 0

2 years ago

Calculate an estimate of a square root of 119 + 120i

uysha [10]

Answer:

Step-by-step explanation:

Given

z=119+120 i

Let $\sqrt{119+120 i}=p+iq$

Squaring both sides

$119+120 i=p^2-q^2+2ipq$

Comparing real and imaginary part

Re(LHS)=Re(RHS)

$119=p^2-q^2$ -----------1

comparing Im(LHS)=Im(RHS)

120=2pq

$q=\frac{60}{p}$

Substitute q in 1

$119=p^2-(\frac{60}{p})^2$

$p^4-119p^2-(68)^2=0$

Let $x=p^2$

$x^2-119x-4624=0$

$x=frac{119\pm \sqrt{119^2+4\times 4624}}{2}$

$x=\frac{119\pm 180.71}{2}$

we take only Positive value because $p^2=x$

x=149.85

$p^2=149.85$

thus $p=\pm 12.24$

$q=\mp 4.90$

thus $\sqrt{119+120 i}=\pm (12.24+i 4.90)$

6 0

4 years ago

Helpppppppppp please and thank uuuuuuuu

kari74 [83]

Answer:

U, D, L

Step-by-step explanation:

E: 22 × 1.3 = 28.6, Up.

F: 7.25 × 6.5 = 47.13 (Rounded), Down.

G: 212 × 0.99 = 209.88, Left.

Up, Down, Left = U, D, L

Do you like my drawing? (Although I didn't color it in...)

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3 years ago

I have a Math Quiz for You Mathmatizers !!! I have a 72" 2x4 with 2 cuts/3 pieces The 2nd piece is twice as long as the 1st piec

olya-2409 [2.1K]

Answer:

the answer is 4

Step-by-step explanation:

let x= length of the first piece.

second piece is 2x, right

third piece x+5, right

Total, in x-talk, is x + 2x + x+5 and that equals 21 feet, right.

Combine like terms: 4x + 5 = 21. Still with me?

So 4x = 16 (do you see why?)

So, what x must x be is 4

8 0

4 years ago

The answer is 4.8feet in delta math

abruzzese [7]

Answer:

4.8 feet

Step-by-step explanation:

6 0

3 years ago