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2 years ago

13 more than a number

Mathematics

2 answers:

liberstina [14]2 years ago

7 0

Answer:

x+13

Step-by-step explanation:

x +13

x: the number

mezya [45]2 years ago

3 0

Answer and step-by-step explanation:

If we called the unknown number is: x

We are given that: 13 more than x so the equation would be:

x and 13 more than it

= x + 13

Hope this helped :3

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use elimination to solve. For a production of sweeney Todd in Las Vegas, orchestra seats cost $42 and mezzanine seats cost $25.

lidiya [134]

They bought 8 orchestra seats and 6 mezzanine seats.

Step-by-step explanation:

Cost of one orchestra seat = $42

Cost of one mezzanine seat = $25

No. of people = 14

Amount spent = $486

Let,

x be the number of orchestra seats

y be the number of mezzanine seats

According to given statement;

x+y=14 Eqn 1

42x+25y=486 Eqn 2

Multiplying Eqn 1 by 25;

$25(x+y=14)\\25x+25y=350\ \ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2 to eliminate y;

$(42x+25y)-(25x+25y)=486-350\\42x+25y-25x-25y=136\\17x=136$

Dividing both sides by 17

$\frac{17x}{17}=\frac{136}{17}\\x=8$

Putting x=8 in Eqn 1

$8+y=14\\y=14-8\\y=6$

They bought 8 orchestra seats and 6 mezzanine seats.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

5 0

2 years ago

Two regular pentagons have areas of 20 mm² and x² - x mm². What values of x make the pentagons congruent?

Aleksandr-060686 [28]

Answer

5 and -4

Explanation

If the two triangle are congruent then they have the same area.

20 = x² - x

x² - x - 20 = 0

x² - x + (1/2)² = 20 + (1/2)²

(x - 1/2)² = 20.25

x - 1/2 = √20.25

x - 1/2 = 4.5 or x - 1/2 = - 4.5

x = 4 1/2 + 1/2 x = -4 1/2 + 1/2

= 5 = -4

The values of x are 5 and -4.

8 0

2 years ago

Find the volume of the figure

Karolina [17]

Answer:

v=LxBxH

v=3x75

v=105cm^3

3 0

2 years ago

in 2014 the attendance at jefferson schools fall festival was 600 in 2015 the attendance was 575 what was the percent change in

pantera1 [17]

$600 - 575 = 25$

$\dfrac{25}{600} \times 100\% = 4.17\%$

Answer : 4.17%

Hope this helps. - M

8 0

2 years ago

Find center and radius of this circle: <img src="https://tex.z-dn.net/?f=%28x-9%29%5E2%2B%28y%2B4%29%5E2%3D25" id="TexFormul

Masja [62]

Answer:

Center: (9,-4)

Radius: 5

Step-by-step explanation:

Equation for a circle:

$(x-h)^2+(y-k)^2=r^2$

h=9

k=-4

r=5

center is (h,k)

to find the radius, get square root of 25

8 0

1 year ago

Read 2 more answers

13 more than a number​

13 more than a number