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3 years ago

6 more than 3 times what number squares is 81

1 answer:

6 0

When you write that equation, you get 3x^2+6=81.

Solving for x:

Subtract by 6 on both sides of the equation to get 3x^2=75.

Then, divide by 3 on both sides of the equation to get x^2=25.

Finally, do the square root on both sides of the equation to get x=5.

The number is 5.

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Combine Like Terms

Mazyrski [523]

Answer:

-2g-12

Step-by-step explanation:

5 0

2 years ago

Find the measured of the numbered angles in the rectangle. Geometry Chapter 7.4

stira [4]

Answer:

∠3 = 18°

∠4 = 144°

∠2 = 36°

∠1 = 72°

Step-by-step explanation:

From the concept of alternate interior angles,

∠3 = 18°

Since the diagonal divides the rectangle into 4 parts with 2 of the rectangles being similar.

Then, the triangle with ∠3 & ∠4 is an Isosceles triangle and as such;

∠4 = 180 - 2(∠3)

∠4 = 180 - 2(18)

∠4 = 180 - 36

∠4 = 144°

∠2 = 180 - ∠4 (because sum of angles on a straight line is 180°)

∠2 = 180 - 144

∠2 = 36°

Like it was done for angle ∠4 above;

∠1 = (180 - 36)/2

∠1 = 144/2

∠1 = 72°

8 0

3 years ago

2. Find the value of x. Then, find the measure of each angle. H 3X-2 <br>I 4x-9 <br>J 3x-9

Alisiya [41]

The correct answer js 7 i think

7 0

3 years ago

Read 2 more answers

What is the slope of the line

ELEN [110]

Answer:

The slope = 2

Step-by-step explanation:

Slope is rise over run.

The line rises 2 units up for every 1 unit it moves right.

Thus, the slope would be 2/1, which is the same as 2.

5 0

2 years ago

Find the MAD for this set of data.

Nostrana [21]

Answer:

Hence MAD=0.8

Step-by-step explanation:

MAD is also known as Mean Absolute Deviation.

We find MAD by the following steps:

Firstly we find the mean of the data
Then we subtract each entry from the mean to obtain the deviation
Then find the absolute value of the deviation which is also known as absolute deviation.
Finally we find the mean of the absolute deviation.

Now we are given a table of the absolute deviation we just need to calculate the mean of the absolute deviation.

The absolute deviation is given as:

1 3 1 0 0 1 0 0 1 1

The mean of this is calculated as:

$\dfrac{1+3+1+0+0+1+0+0+1+1}{10}=\dfrac{8}{10}=0.8$

Hence, MAD=0.8

7 0

3 years ago

Read 2 more answers