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3 years ago

How do you solve this equation?

Mathematics

2 answers:

Ivenika [448]3 years ago

7 0

To solve this question, what you would need to do is add 30 to both sides of the equation and then divide by 9, to find the solution.

You can check if it is correct by substituting the same value back into the original equation and seeing if the left hand side is equal to the right hand side.

Debora [2.8K]3 years ago

4 0

9x - 30 = 10080
You want to get the X alone, start out easy and move -30 to the other side of equal sign.
9x -30 +30 = 10080 + 30
Combine Like Terms
9x = 10110
Now divide both sides by 9, 9x divided by 9 is X
X = 1123 1/3

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Can someone help me figure this out? -2(x+8)=6x+8

Lemur [1.5K]

Answer:

x = -3

Step-by-step explanation:

First, distribute:

-2x - 16 = 6x + 8

Then, switch the numbers to one side, and switch the variables to another:

-2x - 6x = 8 + 16

Then, simplify:

-8x = 24

Finally, divide -8 on both sides:

We got x = -3

And we're done!

4 0

4 years ago

3. Put the following decimals in order from least to greatest. Explain the method that you used. 3.7, 3.017, 3.17, 3.07, 3.71, 3

Sonbull [250]

Answer:

3.017, 3.07, 3.1, 3.107, 3.17, 3.7, 3.71 This will be the order of numbers from least to greatest

Step-by-step explanation:

We have to put the numbers 3.7, 3.017, 3.17, 3.07, 3.71, 3.107, 3.1 in order from least to greatest

Here 1st digit means before decimal 3 is same in all numbers

The numbers which has smallest digit after decimal will be smallest number.

So the smallest number will be 3.017 after that 3.07

The order will be 3.017, 3.07, 3.1, 3.107, 3.17, 3.7, 3.71

This will be the order of numbers from least to greatest

6 0

4 years ago

Find the average value of the function ()=3 on the interval [−3,3] and determine a number in this interval for which () is equal

shutvik [7]

The average value of the function f(x) = 3x^2 is 3 on the inetrval [-3, 3].

According to the given question.

We have a function.

F(x) = 3x^2

Since, we know that " the average value of a function is found by taking the integral of the function over the interval and dividing by the length of the interval".

Here, the given interval is [-3, 3]

Therefore, the length of the interval = 3 - (-3) = 3 + 3 = 6

Now, the average value of the given function f(x)

$=\frac{1}{6} \int\limits^3_{-3} {3x^{2} } \, dx$

$= \frac{1}{6} [\frac{x^{3} }{3} ]_{3} ^{-3}$

$= \frac{1}{6} \frac{(3)^{3} -(-3)^{3} }{3}$

$= \frac{1}{18} (27 + 27)$

= 2(27)/18

= 27/9

= 3

Hence, the average value of the function f(x) = 3x^2 is 3 on the inetrval [-3, 3].

Find out more information about average value of a function here:

brainly.com/question/22155666

#SPJ4

3 0

1 year ago

Which is the best approximation for the solution of the system of equations?

SpyIntel [72]

Answer:

(0.88, 0,65)

Step-by-step explanation:

what do we have to do ? I assume we need to find the crossing point between the 2 lines.

when looking at the graphic, we can already rule out the first, third and fourth option.

none of the coordinates of that point is larger than 1 in any direction or smaller than 0.5.

so, just by looking at things I immediately "bet" on answer option 2 (0.88, 0.65).

but let's check.

y = -2x/5 + 1

y = 3x - 2

for the crossing point both functions must produce the same functional value.

-2x/5 + 1 = 3x - 2

-2x/5 + 5/5 = 15x/5 - 10/5

-2x + 5 = 15x - 10

15 = 17x

x = 15/17 = 0.88...

y = 3×0.88... -2 = 0.65...

hurray, our original observation and "suspicion" is confirmed.

5 0

3 years ago

A certain forest covers an area of 3600km^2. Suppose that each year this area decreases by 6%. What will the area be after 8 yea

timama [110]

Answer:

= 1728km2

Step-by-step explanation:

From the formula A = PRT/100%

Where; A is final

P is initial

T is time taken

R is the rate

Therefore A = 3600 × (6/100) × 8

= 1728km2

6 0

3 years ago