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3 years ago

Thank you!!!!!!!!!!!!!

Mathematics

1 answer:

SashulF [63]3 years ago

4 0

Answer:

$y=\frac{4}{3}x+7$

Step-by-step explanation:

$y=-\frac{3}{4}x+1$

Points: (12, 9)

Slope (m⊥): $\frac{4}{3}$

$y=\frac{4}{3}x+b$

$9 = \frac{4}{3}(12)+b$

$9 = 16 + b$

$b = 7$

$y=\frac{4}{3}x+7$

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Find the value of y...

soldier1979 [14.2K]

Answer:

y=0

Step-by-step explanation:

Rewrite Evaluate Powers:

3 $3^{2y-1}+3^{-1}+2*3^{y}*3^{-1}=1$

Calculate:

$(3^{y})^{2}*\frac{1}{3} +2*3^{y}*\frac{1}{3}=1$

Solve using substitution:

$(3^{y})^{2}*\frac{1}{3} +\frac{2}{3} *3^{y}=1$ $t=3^{y}$

Solve the equation for t:

$t^{2}*\frac{1}{3}+\frac{2}{3}t=1$

t=-3

t=1

Substitute back to t=3^y

3^y=-3

3^y=1

y∉R

$3^{y}=1$

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3 years ago

The diameter of a circle is 6 centimeters. What is the circle's area? Use 3.14 for pi

Lynna [10]

Step-by-step explanation:

diameter=

$2 \times\pi \times r = 6 \\ r = \frac{6}{2 \times 3.14} = 0.955 \\ area = \pi \times {r}^{2} = 3.14 \times {0.955}^{2} \\ = 2.87\: {cm}^{2}$

7 0

3 years ago

Read 2 more answers

As a lifeguard, sara earns a base pay of $80 per day. if her day involves swim instruction, sara earns an additional 9t dollars,

zhuklara [117]

Answer:

Step-by-step explanation:

Sara's base pay is $80

(a) The 9t represents the additional amount of money that she earns if she gives instruction for t hours. 9 stands for $9 per hour

b)The term in the expression is t which stands for the number of hours that she instructs. The coefficient is 9 which stands for the hourly rate

c) The expression for 7 hours would be

We will substitute t into 80 + 9t. It becomes

80 + 9×7

d) in all, she will earn

80 + 9×7 = $143

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3 years ago

At its highest point, the elevation of a county is 5,764 feet above sea level. At its lowest point, the elevation of the count

Feliz [49]

Answer:

$Difference = 5757\ feet$

Step-by-step explanation:

Given

$Highest\ Point = 5764\ feet$

$Lowest\ Point = 7\ feet$

Required

Determine the difference between the points

The difference is calculated as follows:

$Difference = Highest - Lowest$

$Difference = 5764\ feet - 7\ feet$

$Difference = 5757\ feet$

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3 years ago

Which property can be used to expand the expression -2(3/4x+7)

geniusboy [140]

Answer:

B. the distributive property

Step-by-step explanation:

Distributive property can be used to expand the expression -2(3/4x+7).

When that property is used, we need to distrubute the monomial to the binomial which is the two terms.

$- 2( \frac{3}{4} x + 7) \\ \Longrightarrow \boxed{- 2( \frac{3}{4} x) + - 2(7)}$

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3 years ago