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SOVA2 [1]
3 years ago
14

REALLY NEED HELP IM STUCK. I PUT A PICTURE

Mathematics
1 answer:
azamat3 years ago
5 0
Just look at the x and y variables and their exponents and roots. Ignore the rest.

Start with x.
On the left side you have cubic root of x^c.
On the right side you have x^2.

\sqrt[3]{x^c} = x^2

(x^c)^{\frac{1}{3}} = x^2

\dfrac{c}{3} = 2

c = 6

Now look at y on both sides and the roots and exponents of y.

\sqrt[3]{y^5} = y\sqrt[3]{y^d}

(y^5)^{\frac{1}{3}} = y^1 \times y^{\frac{d}{3}}

y^{\frac{5}{3}} = y^{1 + \frac{d}{3}}

y^{\frac{5}{3}} = y^{\frac{3}{3} + \frac{d}{3}}

y^{\frac{5}{3}} = y^{\frac{d + 3}{3}}

\dfrac{d + 3}{3} = \dfrac{5}{3}

d + 3 = 5

d = 2

Answer: Choice C. c = 6; d = 2
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Simplify (3 + 2i)(7 − 5i).
erma4kov [3.2K]
Rule needed: i^2 = -1
Standard form a + bi

(3 + 2i)(7 - 5i) FOIL
3 * 7 = 21
3 * - 5i = - 15i
2i * 7 = 14i
2i * -5i = - 10i^2 = - 10 * -1 = 10
Putting it all back together.
31 - i
8 0
3 years ago
Read 2 more answers
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madreJ [45]

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6 0
3 years ago
If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
Papessa [141]
5/11 = 18/y
5 y = 18 · 11
5 y = 198
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y = 39.6
3 0
3 years ago
If x varies directly with y and x=6 when y=8, find x when y=18.
andrey2020 [161]

Answer:

x = 13.5

Step-by-step explanation:

direct variation

y = kx

substitute x and y to find k

8 = k*6

divide by 6

8/6 =k

4/3 = k

y = 4/3 x

now put in y =18

18 = 4/3 x

 multiply by 3/4

18 * 3/4 = 3/4 * 4/3 x

54/4 = x

change to a decimal

13.5 =x


6 0
3 years ago
Given the value of the hypotenuse c for a 30°-60°-90° triangle, write the
zlopas [31]

Answer:

a= c/2

b= (c/2)×√3

side b is the side with the 60 degree angle.

side a is the side with the 30 degree angle.

using the theorem that the side with the 60 degree × 2 = length of side c and the side with the 60 degree × √3 = b.

I get the following equations shown above.

6 0
2 years ago
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