4 years ago

Which pair of points has a negative slope?

1 answer:

3 0

A negative slope means that while the x value is increasing, the y value is decreasing. This means that answer A is correct; the x value increases by five units, but the y value decreases by 25 units.

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For what value of a does (1/9)^a+1 =81^a+1 x 27^2-a ? -4 -2 2 6

EastWind [94]

Answer:

- 4

Step-by-step explanation:

Using the rule of exponents

• $a^{m}$ × $a^{n}$ ⇔ $a^{(m+n)}$

• $a^{-m}$ ⇔ $\frac{1}{a^{m} }$

$(\frac{1}{9}) ^{a+1}$ = $9^{-(a+1)}$ = $3^{-2(a+1)}$

and right side

= $3^{4(a+1)}$ × $3^{3(2-a)}$

Hence

$3^{-2a-2}$ = $3^{4a+4}$ × $3^{6-3a}$

$3^{-2a-2}$ = $3^{a+10}$

Equating exponents on both sides gives

a + 10 = - 2a - 2 ( add 2a to both sides )

3a + 10 = - 2 (subtract 10 from both sides )

3a = - 12 ( divide both sides by 3 )

a = - 4

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3 years ago

What is the answer to 25% of 50

a_sh-v [17]

Answer:

12.5

Step-by-step explanation:

.25 x 50= 12.5

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2 years ago

Two rectangles have the same width. The length of one is 2 feet longer than the width. The length of the other is 4 feet longer

qaws [65]

Area of smaller=4*5=20 sq ft
Area of larger=4*6=24 sq ft
Larger is 4 more than smaller

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A package of 8 pencils costs $0.96. What

fenix001 [56]

Answer:

Step-by-step explanation:

0.96/8=0.12

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