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attashe74 [19]
3 years ago
12

A number added to itself twelve times is five more than twice the number what is the number

Mathematics
1 answer:
viva [34]3 years ago
3 0
a+12a-5=2a \\ \\ 13a-5=2a \\ \\ 13a-2a=5 \\ \\ 11a=5 \\ \\ \boxed{a=\frac{5}{11}}
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Help please with these questions
sergeinik [125]

Answer:

1. There is a <u><em>1/5</em></u> chance you will get a blue one from both bags.

2. There is a <u><em>3/32</em></u> chance you will get a 1 and then a 2.

3. There is a <u><em>5/12</em></u> chance of rolling a factor of 12 and then an odd number.

Step-by-step explanation:

<u><em>Question 1</em></u>

Add all the marbles together.

3 + 2 = 5

4 + 2 = 6

Make a fraction.

blue/all

Use it on the numbers.

3/5

2/6

Multiply them together.

6/30

Simplify.

1/5

There is a <u><em>1/5</em></u> chance you will get a blue one from both bags.

<u><em>Question 2</em></u>

Add all the numbers together.

There are 8.

Make the two crucial fractions.

ones/all

twos/all

Use them.

3/8

2/8

Multiply them together.

6/64

Simplify.

3/32

There is a <u><em>3/32</em></u> chance you will get a 1 and then a 2.

<u><em>Question 3</em></u>

Find the factors of 12.

1, 2, 3, 4, 6

Make a fraction.

factors/all

Use the fraction.

5/6

Find the odd numbers.

1, 3, 5

Make a fraction.

odd/all

Use the fraction.

3/6

Multiply them together.

15/36

Simplify.

5/12

There is a <u><em>5/12</em></u> chance of rolling a factor of 12 and then an odd number.

8 0
2 years ago
Solve by the linear combination method (with or without multiplication).
iris [78.8K]
I hope this helps you

8 0
2 years ago
The claim is that for the population of adult​ males, the mean platelet count is μ&gt;217. The sample size is n=50 and the test
Deffense [45]

Step-by-step explanation:

First, find the degrees of freedom:

df = n − 1

df = 49

To find the p-value manually, use a t-score table.  Find the row corresponding to 49 degrees of freedom.  Then find the α column that corresponds to a t-score of 1.421.  You'll find it's between α = 0.10 (t = 1.299) and α = 0.05 (t = 1.677).  Interpolating, we get an approximate p-value of 0.084.  For a more accurate answer, you'll need to use a calculator.

5 0
3 years ago
Need help with inscribed angles If M
Bogdan [553]

Given:

In the given circle O, BC is diameter, OA is radius, DC is a chord parallel to chord BA and m\angle BCD=30^\circ.

To find:

The m\angle AOB.

Solution:

If a transversal line intersect two parallel lines, then the alternate interior angles are congruent.

We have, DC is parallel to BA and BC is the transversal line.

\angle OBA\cong \angle BCD        [Alternate interior angles]

m\angle OBA=m\angle BCD

m\angle OBA=30^\circ

In triangle AOB, OA and OB are radii of the circle O. It means OA=OB and triangle AOB is an isosceles triangle.

We know that base angles of an isosceles triangle are congruent.

\angle OAB\cong \angle OBA      [Base angles of an isosceles triangle]

m\angle OAB=m\angle OBA

m\angle OAB=30^\circ

In triangle AOB,

m\angle OAB+m\angle OBA+m\angle AOB=180^\circ

30^\circ+30^\circ+m\angle AOB=180^\circ

60^\circ+m\angle AOB=180^\circ

m\angle AOB=180^\circ-60^\circ

m\angle AOB=120^\circ

Therefore, the measure of angle AOB is 120 degrees.

6 0
2 years ago
Solve Ax-By=c for y how do you solve this
Rainbow [258]

Answer:

y = - c/B + Ax/B

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

5 0
3 years ago
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