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slava [35]
3 years ago
6

Please help me on thiss

Mathematics
2 answers:
Hitman42 [59]3 years ago
6 0

Answer:

-1.2

Step-by-step explanation:

3n + 5 = 1/2(11n + 16)

3n + 5 = 5.5n + 8

5 = 2.5n + 8

-3 = 2.5n

-3/2.5 = n

-1.2 = n

Hope this helps!

ludmilkaskok [199]3 years ago
5 0

Answer:

n=-1.2

Step-by-step explanation:

First, solve both sides of the equation:

3n+5=\frac{1}{2} (11n+16)

3n+5=(\frac{1}{2} )(11n)+(\frac{1}{2} )(16) (Distribute)

3n+5=\frac{11}{2} n+8

Then, subtract 11/2 n from both sides:

3n+5-\frac{11}{2}n=\frac{11}{2} n+8-\frac{11}{2} n

\frac{-5}{2}n+5=8

Now, subtract 5 from both the sides:

\frac{-5}{2} +5-5=8-5

\frac{-5}{2} n=3

For the last step, multiply both the sides by 2 / -5

(\frac{2}{-5} )*(\frac{-5}{2} )=(\frac{2}{-5} )*(3)

n=\frac{-6}{5}

Convert it to decimal:

n=-1.2

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How many terms are in this equation <br> 8y-6y^2/7^3
vlada-n [284]

Answer:

2

Step-by-step explanation:

You count terms that are seperated by - and + signs. Any type of fraction is considered one term.

So you count 8y as one term and the rest is a whole fraction so you also count that as one term.

You add all the terms together and you have 2 terms in this equation.

Hope this helped :)

4 0
3 years ago
The side length of a cube is √7 cm.
Genrish500 [490]
<span>The answer is The total area of the top and bottom squares. s = √7 cm is irrational value and we need rational value. Let's check all choices: A. The volume. V = (s)^3. If s = √7, V = (√7)^3 = 7√7 - irrational value. B. The perimeter of the front square. P = 4 * s = 4 * √7 = 4√7 - irrational value. C. The diagonal of the back square. d = s√2 = √7 * √2 = √(7*2) = √14 - irrational value. D. The total area of the top and bottom squares. A = 2 * s^2 = 2 * (√7)^2 = 2 * 7 = 14 - rational value.</span>
6 0
3 years ago
Try to answer the following question without running the code in Python:
zloy xaker [14]

The value of x is an int with value 1.

The correct option is (A).

<h3>What is / in python?</h3>

Divides the value on the left by the one on the right.

<h3>What is // in python?</h3>

Divides and returns the integer value of the quotient.

x= 8/4//2

x= 2//2

x=1

Learn more about operators in python here:

brainly.com/question/14531969

#SPJ1

5 0
2 years ago
1.
nika2105 [10]

If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent.

Value of X is  9 and  Angle 6 is  79°

If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent.

If two parallel lines are cut by a transversal, then the pairs of alternate interior angles are congruent.

If two parallel lines are cut by a transversal, then the pairs of alternate exterior angles are congruent.

Since, angle 1 and angle 4 are vertically opposite angles . Hence, these are equal.

∠1 = ∠4 = 11x + 2

Similarly, ∠6 and ∠7 are vertically opposite angles.

Thus,  ∠6 = ∠7 = 8x + 7

If two parallel lines are cut by a transversal, then the sum of interior angles on one side is equal to 180 degree.

Therefore,   ∠4 + ∠6 = 180

                 11x + 2 + 8x + 7 = 180

                  19x + 9 = 180

                  19x = 171

                   x = 9

Value of angle 6 = value of angle 7

                           = 8x + 7

                        = 8 (9) + 7

                        = 79 Degree

Learn more:

brainly.com/question/19670823

3 0
2 years ago
Cos(2x) + sin^2(x) = 0
zloy xaker [14]

cos(2<em>θ</em>) + sin²(<em>θ</em>) = 0

Half-angle identity:

cos(2<em>θ</em>) + (1 - cos(2<em>θ</em>))/2 = 0

Simplify:

2 cos(2<em>θ</em>) + 1 - cos(2<em>θ</em>) = 0

cos(2<em>θ</em>) = -1

Solve for <em>θ</em> :

2<em>θ</em> = arccos(-1) + 2<em>nπ</em>

2<em>θ</em> = <em>π</em> + 2<em>nπ</em>

<em>θ</em> = <em>π</em>/2 + <em>nπ</em>

where <em>n</em> is any integer.

7 0
3 years ago
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