All categories

3 years ago

HELP DUE TODAY PLSSS

Mathematics

1 answer:

pashok25 [27]3 years ago

5 0

Answer:

x=12

Step-by-step explanation:

32/2x = x/9; because the triangles are similar

32 = 2x^2/9

288 = 2x^2

144 = x^2

x = 12 or x = -12, but the latter is nonsensical.

You might be interested in

Use the method in the Example to find the square roots of 1 + √3i

kiruha [24]

Answer:

$\sqrt{1 + \sqrt{3} i}=\pm (1.58+i 0.548)$

Step-by-step explanation:

Given

z = 1 + √3 i

Let $\sqrt{1+\sqrt(3) i}=p+iq$

Squaring both sides

$1+\sqrt(3) i=p^2-q^2+2ipq$

Comparing real and imaginary part

Re(LHS)=Re(RHS)

$1=p^2-q^2$ ...........................(1)

comparing Im(LHS)=Im(RHS)

√3=2pq

$q=\frac{\sqrt{3}}{2p}$

Substitute q in equation (1)

$1=p^2-(\frac{\sqrt{3}}{2p})^2$

$p^4-p^2-0.75=0$

Let $x=p^2$

$x^2-x-0.75=0$

$x=\dfrac{1\pm \sqrt{1^2+4\times 0.75}}{2}$

$x=\frac{1\pm 4}{2}$

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

x=2.5

$p^2=2.5$

thus $p=\pm 1.58$

$q=\pm 0.548$

thus,

$\sqrt{1 + \sqrt{3} i}=\pm (1.58+i 0.548)$

5 0

4 years ago

i need help answering this but also how to do it like step by step. i don’t understand this. (9 + 7x) - 7x

anyanavicka [17]

Answer: 9

Step-by-step explanation: so first you remove the ( ) because they’re useless in this then once you remove then Since two opposites add up to zero, remove them from the expression then you only get left with 9.

7 0

3 years ago

How much did jennie earn if she got $40 for babysitting plus a 15% tip

vazorg [7]

Answer:

$46

Step-by-step explanation:

100% of 40 is 40. 10 percent of 40 is 4. 5% of 40 is 2. 40+4+2=46.

7 0

2 years ago

Why might you complete a 1040 instead of a 1040EZ?

Katyanochek1 [597]

<span>Your taxable income must be less than $100,000 and only come in the form of wages</span>

6 0

3 years ago

Use place-value patterns to complete the table. 100 is ten times as much as 1/10 of?

Eva8 [605]

100 is ten times as much as 1/10 of a hundred

ur multiplying n then dividing by ten so they cancel each other out

theres no table so idk if this is what u wanted but that's the answer
hope it helps

3 0

4 years ago