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2 years ago

What is the value of the expression

Mathematics

1 answer:

Lilit [14]2 years ago

7 0

Answer:

B 1/3

Step-by-step explanation:

3^-3 * 3^8

----------------------

3^6

We know that a^b * a^c = a^(b+c)

3^(-3+8)

----------------------

3^6

3^(5)

----------------------

3^6

We know that a^b divide by a^c = a^(b-c)

3^(5-6)

3^-1

A negative exponent means it goes in the denominator of the fraction

1/3^1

1/3

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Please help and show your work ( no links or files) plz

mr_godi [17]

Answer:

Step-by-step explanation:

Use the formula for the area of a triangle,

Area of a triangle = $\frac{1}{2}(\text{Base})(\text{Height})$

7). Area of the triangle = $\frac{1}{2}(20)(7.4)$

= 74 km²

8). Area of the triangle = $\frac{1}{2}(4)(15.4)$

= 30.8 cm²

9). Area of the triangle = $\frac{1}{2}(16)(7)$

= 56 m²

10). Area of the triangle = $\frac{1}{2}(11)(7.7)$

= 42.35 km²

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2 years ago

A phone company charges a flat rate of $15 to make phone calls for a month.they charge $0.10 per minute for each call made.if th

Ne4ueva [31]

Answer:

450 minutes

Step-by-step explanation:

15 + 0.1x = 60

15 - 15 + 0.1x = 60 - 15

0.1x = 45

$\frac{0.1x}{0.1} = \frac{45}{0.1}$

x = 450

5 0

2 years ago

Read 2 more answers

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Law Incorporation [45]

Answer:

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2 years ago

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The graph of a line passes through the points (0, -2) and (6.0). What is

9966 [12]

Answer:

$y=\frac{1}{3}x-2$

Step-by-step explanation:

The equation of a line is given in the form $y=mx+b$

Where

m is the slope with formula $m=\frac{y_2-y_1}{x_2-x_1}$

and

b is the y-intercept [y axis cutting point of line]

Given the two points (0, -2) and (6,0),

x_1 = 0

y_1 = -2

x_2 = 6

y_2 = 0

Now, we find m using formula:

$m=\frac{0+2}{6-0}=\frac{1}{3}$

Now we have

$y=\frac{1}{3}x+b$

Finding b, we plug in any (x,y) point. Lets put (6,0) and find b:

$y=\frac{1}{3}x+b\\0=\frac{1}{3}(6)+b\\0=2+b\\b=-2$

Thus,

equation of line = $y=\frac{1}{3}x-2$

5 0

2 years ago

HELP HELP HELP!!!!!!!

erma4kov [3.2K]

Answer:

b = 77

Step-by-step explanation:

a² + b² = c²

36² + b² = 85²

1296 + b² = 7225

b² = 7225 - 1296

b² = 5929

$\sqrt{b^2} =\sqrt{5929}$

b = 77

3 0

2 years ago