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stealth61 [152]
3 years ago
6

Solve -6x+3-12x-8=31

Mathematics
2 answers:
Gwar [14]3 years ago
6 0
X = -2

Combine terms to get:

-18x - 5 = 31

Add 5 to both sides

-18x = 36

Divide by -18

x = -2
baherus [9]3 years ago
5 0

Answer: x=-6

Step-by-step explanation:

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A cone has a volume of 5 cubic inches. What is the volume of a cylinder that the cone fits exactly inside of?
Pie

Answer:

15 in^{3}

Step-by-step explanation:

Given:

Volume of Cone= 5 inch ^{3}

Solution:

Formula:

Volume of Cone =\frac{1}{3} \pi r^{2} h

Volume of Cylinder= \pi r^{2} h

\therefore We can say that

Volume of Cone = \frac{1}{3} \times Volume of Cylinder

\therefore Volume of cylinder = 3 \times Volume of Cone

Now Substituting given data we get

Volume of Cylinder= 3\times5

Volume of Cylinder= 15 in^3

3 0
3 years ago
A 90-inch length of ribbon is to be cut into three pieces. The longest piece is to be 30 inches longer than the shortest piece,
Free_Kalibri [48]
Lets name the shortest piece a, the medium b and the longest c

Together they are 90inches
a + b + c = 90
The longest is 30 inches longer than the shortest
c = a + 30
The third piece is half the lenght of the longest
b =  \frac{c}{2}

So if you place c=a+30 in the other 2 equasions you get

a + b + (a + 30) = 90 = 2a + b + 30
And
b =  \frac{30 + a}{2}
Now if you put this 2 toghether u get
2a +  \frac{30 + a}{2}  + 30 = 90
Multyplied by 2
4a + 30 + a + 60 = 180
5a = 90
Meaning that a=18inches

Now that we have the lenght of a we put it in the previous equasion

b =  \frac{30 + 18}{2}
So b=48/2 which means b=24inches

And together they must be 90 so

18 + 24 + c = 90

C=48inches







6 0
4 years ago
Brian spends 3 5 of his wages on rent and 1 3 on food. If he makes £735 per week, how much money does he have left?
Margarita [4]

Answer :

Brian has $49 left.

Step by step explanation :

Step 1 : Find how much money Brian spends on rent and food.

First question we should be asking is what is 3/5 of 735?

Let's find that.

\frac{3}{5} * \frac{735}{1}

= \frac{(3)(735)}{(5)(1)}

= \frac{2205}{5}

= 441

We know Brian spends $441 on rent. Now we find how much he spends on food.

\frac{1}{3} * \frac{735}{1}

= \frac{(1)(735)}{(3)(1)}

= \frac{735}{3}

= 245

Brian spends $245 on food.

Step 2 : Add what he spends on rent and food together.

$441 + $245 = $686

Step 3 : To find out how much money Brian has left, we subtract $686 from $735.

$735 - $686 = $49

Conclusion : Brian has $49 left.

Hope this helps, please mark brainliest if possible. Have a nice day.

3 0
3 years ago
Find the vertices and foci of the hyperbola with equation x squared over nine minus y squared over sixteen = 1.
Arisa [49]
<em>Standard equation of hyperbola is </em>\frac{x^{2} }{ a^{2} } -  \frac{ y^{2} }{ b^{2} } = 1.

<em>Comparing given info with standard equation, we get 
</em>a(vertices)= +3 and -3
foci = \sqrt{ a^{2} + b^{2} } =  \sqrt{9+16} =  \sqrt{25} =5.
7 0
3 years ago
Which equations are true?
ohaa [14]

The correct answer from the task content is; Choice C; None of the above.

<h3>Which of the equations are true?</h3>

The equations can be evaluated as follows;

A) -x + (-x) =0

-x -x = -2x......Not True

B) x -(-x) = 0

x + x = 2x .....Not True.

On this note, it follows that none of the equations is true.

Read more on equations;

brainly.com/question/2972832

#SPJ1

3 0
2 years ago
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