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2 years ago

5

Write the equation of a line parallel to y=7x+8 and goes through the point (-1,1).

1 answer:

k0ka [10]2 years ago

6 0

A. y=7x+6 is correct.

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2 years ago

If 3 to the power y = x then y = ?

Oksanka [162]

Answer:

$y=\log_3(x)$

Step-by-step explanation:

$3^y=x$

$\ln(3^y)=\ln(x)$

$y\ln(3)=\ln(x)$

$y=\frac{\displaystyle\ln(x)}{\displaystyle\ln(3)}$

but if

$f(x)=\frac{\displaystyle\ln(x)}{\displaystyle\ln(3)}$

then since

$f(3)=\frac{\displaystyle\ln(3)}{\displaystyle\ln(3)}=1$

$f(x)=\log_3(x)$

so

$y=\log_3(x)$

or

$3^y=x$

$\log_3(3^y)=\log_3(x)$

$y\log_3(3)=\log_3(x)$

$\text{but }\,\log_3(3)=1, \text{so,}$

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2 years ago

Find the area of the given polygon.

zimovet [89]

9514 1404 393

Answer:

88 square inches

Step-by-step explanation:

The figure can be divided into two congruent trapezoids, each with bases 7 and 4 inches, and height 8 inches. Then the total area is ...

A = 2(1/2)(b1 +b2)h

A = (7 +4)(8) = 88 . . . . square inches

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