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Free_Kalibri [48]

3 years ago

13

8x + y = 17 5x + 5y = –20

2 answers:

Diano4ka-milaya [45]3 years ago

8 0

Answer:

X=3 Y=-7

Step-by-step explanation:

You can solve a system of equations a number of ways. Substitution makes the most sense in this case. Take the top equation and set it equal to y making it: y=17-8x

Then substitute y in the bottom equation for the y solved in the top. So,

5x + 5(17-8x) = -20

Then solve for x

x=3

Now that we know x, plug it back into the equation for y

y = 17 - 8(3)

y = -7

So your solution is (3, -7)

frozen [14]3 years ago

3 0

Answer:

Step-by-step explanation:

40x + 5y = 85

-5x - 5y = 20

35x = 105

x= 3

15 + 5y = -20

5y = -35

y = -7

(3, -7)

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The product of eight minus a number and seven equals forty when decreased by five. Which equation represents the sentence?

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Ghella [55]

Functions can be represented by equations and graphs

There are 2 million users online at 9 am
The domain is [0,23], while the range is [2, $\infty$ )

<h3>The number of users at 9am</h3>

The function is given as:

$g(x) = \frac 14\sqrt[3]{x - 3} + 2$

At 9am, x = 9.

So, we have:

$g(x) = \frac 14\sqrt[3]{9 - 3} + 2$

Evaluate the difference

$g(x) = \frac 14\sqrt[3]{6} + 2$

Evaluate the exponent

$g(x) = \frac 14 * 1.8 + 2$

$g(x) = 0.45 + 2$

Evaluate the sum

$g(x) = 2.45$

Approximate

$g(x) = 2$

Hence, there are 2 million users online at 9 am

<h3>The function transformation</h3>

We have:

$g(x) = \frac 14\sqrt[3]{x - 3} + 2$

The parent function is:

$f(x) = \sqrt[3]{x}$

So, the transformations applied to the parent function are:

Vertical compression by a scale factor of 4
Horizontal shift to the right by 3 units
Vertical shift up by 2 units

<h3>The domain and the range</h3>

The domain is the possible input values, and the range are the possible output values.

There are 24 hours in a day.

So, the domain is:

Domain = [0,23]

While the range is [2, $\infty$ )

Read more about function transformation at:

brainly.com/question/1548871

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Step-by-step explanation:

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