Test Section07SolvingEqTest

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Problem 1.

(1 point)

Solve

-5x^2+4y^2=5

,

-6x+4y=0

for

.

x =

(If your answer has several parts, enter them separated by commas.)

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Problem 2.

(1 point)

Solve

2x-(xz+yz)+2yz=0

for

.

z =

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Problem 3.

(1 point)

Solve

4(d-2)+3(1-d)=2d-5

for

.

d =

(Enter your answer without any functions like sine, ln, etc.)

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Problem 4.

(1 point)

Solve $\sqrt{r^2+24}=7$ for

.

r =

(If your answer has several parts, enter them separated by commas.)

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Problem 5.

(1 point)

Solve

155(0.95)^t = 20+35(0.95)^t

for

.

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Problem 6.

(1 point)

Solve

u^3=u^2+6u

for

(if there is more than one solution, enter your answers separated by semicolons).

(If your answer has several parts, enter them separated by commas.)

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Problem 7.

(1 point)

Solve

t^2+6t+8=2(t^2+8)

for

(if there is more than one solution, enter your answers separated by semicolons).

(If your answer has several parts, enter them separated by commas.)

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Problem 8.

(1 point)

Solve

y^2+4y-2=0

for

.

y =

(If your answer has several parts, enter them separated by commas.)

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Problem 9.

(1 point)

Solve $1+10^{-x}=4.3$ for

.

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Problem 10.

(1 point)

Solve $10=\sqrt{v\over7\pi}$ for

.

v =

(If your answer has several parts, enter them separated by commas.)

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