3 years ago

8^_/8^-4=8^9 I hate school btw

1 answer:

6 0

So 8 to the blank power divided by 8 to the negative 4 power=8 to the 9th power so

simplify
8^-4 means a reciprocal so 8^-4 means 1/(8^4) or 1/4096

8^9 is 134217728

so (8^x)/(1/4096)=134217728
multiply both sides by 1/4096
8^x=134217728/4096=32768
32768= 2^15 or 2*2*2*2*2*2*2*2*2*2*2*2*2*2*2 or since we know that 8=2*2*2 we can group the 2's this way (2*2*2)(2*2*2)(2*2*2)(2*2*2)(2*2*2) we notice that there are 5 groups so 8^5 is the answer so x=5

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4 drivers/ 30 square miles is they want to offer service to country of 75 square miles, how many must they have

dmitriy555 [2]

By proportion:-

4 / 30 = x / 75 where x is number needed for the '75' country

30x = 300

x = 10

They need 10 drivers.

3 0

3 years ago

Use the table to answer the question. X y -21-1 -1 -1 1 0 3 1 5 2 7 Which equation represents the relationship between x and y s

horsena [70]

Answer:

D. y = 2x + 3

Step-by-step explanation:

Use the table to answer the question.

x:-2 -1 0 1 2

y: -1 1 3 5 7

Which equation represents the relationship between x and y shown in the table.

Solution:

The table shows a linear relationship between x and y.

A linear equation is in the form y = mx + b, where y is a dependent variable, x is an independent variable, m is the rate of change (slope) and b is the value of y when x = 0.

The table (x, y) has the points (-2, -1) and (0, 3). The equation is given by:

$y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-(-1)= \frac{3-(-1)}{0-(-2)} (x-(-2))\\\\y+1=2(x+2)\\\\y+1=2x+4\\\\y=2x+3$