Mathematics High School

In a theater there are 15 chairs in the first row, each row has 3 more chairs than the previous
row, and there are 17 rows. How many chairs are in the theater?​

Answers

Answer 1

Answer:

663.

Step-by-step explanation:

Related Questions

Write an equivalent expression to 3(2x + 4y) + 3x- 6y

Answers

Answer:

9x - 6y

Step-by-step explanation:

3(2x + 4y) + 3x- 6y

6x + 3x - 6y

9x - 6y

Simplify: 5a + 1r + 2a + 4r

Answers

Answer:

7a+5r

Step-by-step explanation:

5a + 1r + 2a + 4r

add like terms

7a+5r

hope that helps

What is 11/2 subtracted by 11/3​

Answers

Answer:

11/6

Step-by-step explanation:

Answer:

1 5/6

First make it a mixed number. 11/2=5 1/2. 11/3=3 2/3. Next, you find the common denominator. 2 and 3 are both multiples of 6. You multiply 11x3=33, 2x3=6, 11x2=22 3x2= 6. Your new numbers are 5 3/6 and 3 4/6. Now you subtract. 5-3=2, but you have to regroup, so you end up with 1. 9/6-4/6=5/6. 1+5/6=1 5/6

Simplify 8x + 4xy - 2y + 5xy - 3x + 7xy

Answers

1 6 x y - 2 y - 3 x

Best answer, best brainliest worth 20 point

Answers

Answer:

Answer choice A

The answer is A hope this helps you !!!

6% of x = 600. Find the value of x.​

Answers

Answer:

x=36

I hope this is correct and I hope that it helps

Answer:

the answer is 10,000

Step-by-step explanation:

to find 1%, 600/6

=100 is 1%

100x100

=10,000

You welcome

Using the slope formula above, find the slope of the line between two points.

Answers

Answer:

Undefined

Step-by-step explanation:

Y2-y1/x2-x1

8-(-2)/5-5

10/0. Slope is undefined

PLEASE HELP ME SOLVE THIS ASAP.
Determine the solution to the System of equations below by using the ELIMINATION METHOD. Show your work

3x+2y=28
x+2y=8

Answers

Answer: (10, -1)

Step-by-step explanation:

Subtract the bottom equation from the top to get:

2x=20

X=10

Plug on for X , y= -1

WILL GIVE BRAINLIEST! PLS HELP!!!
In a model of a house, 1.5cm = 50m. What does the house's length (4.2cm) equal?

Answers

Answer: 140m

Step-by-step explanation:


Use the net to find the total surface area of the rectangular prism.

Answers

Answer:

a. 46m²

Step-by-step explanation:

To find surface area, we must calculate each of the rectangular prism's faces and add them.

1 × 5 = 5

1 × 5 = 5

3 × 5 = 15

3 × 5 = 15

1 × 3 = 3

1 × 3 = 3

5 + 5 + 15 + 15 +3 + 3 = 46

a. 46 m²

solve using the quadratic equationX^2 -4x -3 =0

Answers

Answer:

[tex]x = 2[/tex] ± [tex]\sqrt{7}[/tex]

Step-by-step explanation:

Lets see the quadratic equation :

x = -b ± [tex]\sqrt{b^2 - 4ac}[/tex] / 2a

So now we have our quadratic :

[tex]x^2 - 4x - 3 =0[/tex]

a = ?^2 (Exponent)

b = ?x   (Variable)

c = ?     (Constant)

So replace every variable in the quadratic equation with the ones in the quadratic formula.

x = -(-4) ± (-4)^2 - 4(1)(-3) / 2(1)

(Imagine (-4)^2 - 4(1)(-3) in a square root)

x = 4 ± [tex]\sqrt{16 - - 12}[/tex] / 2

x = 4 ± [tex]\sqrt{28}[/tex] / 2

Of course 28 isn't available for a square root property, so lets break it up :

x = 4 ± [tex]2\sqrt{7}[/tex] / 2

Simplify the radical :

[tex]x = 2[/tex] ± [tex]\sqrt{7}[/tex]

^^^

if eight times a number is increased by 3 the result is 19 more than six times this digit. find the number

Answers

Answer:

8

Step-by-step explanation:

Even though we don't know the number yet, let's name this number "n".

8n + 3 = 6n + 19

8n + 3 - 6n = 6n + 19 - 6n

2n + 3 = 19

2n = 16

n = 16/2

n = 8

Our number is 8.

Note: This answer is 100% correct.  

The rule for reflection over the y-axis is (x, y) --> _ (-x, y) (-x, y) (y, x) (y, x) (x, -y) (x, -y) (-y, x)

Answers

Answer:

see explanation

Step-by-step explanation:

under a reflection in the y- axis

a point (x, y ) → (- x, y )

Answer:

Step-by-step explanation:

(x,y)-->(-x,y)

A banana costs three times as much as an apple. The total cost of 1 banana and 1
apple is $1.60. If a represents the cost of 1 apple, which equation could you use to
find a?

Answers

Answer:

banana cost 1.20 and the apple cost 0.4

Step-by-step explanation:

1.60 divided by 4 = 0.4 and the cost of apples

1.60 - 0.4 = 1.2 and the cost of bananas

since the banana cost three times you divide by two and subtract that number from the total cost to get three times the amount of the apples price. hope this helped sorry for my spelling

Answer:

Step-by-step explanation:

what is the answer 25−12÷[(8−5)×1]

Answers

Answer:

21

Step-by-step explanation:

:)))

Simplify each expression by combining like terms -14w+10w-11+2w

Answers

Answer:

−2 − 11

Hope it helps!!

-2w -11

You need to combine all the terms that have a w and then combine all the terms without a w

i sold 43 pounds of cans and they gave me 23.65 dollars how much would i make if i sell 200 pounds

Answers

Hai!

You would make 110$

Brainliest maybe?

If gh = 31 and hi = 11, then gi

Answers

ANSWER=42

HOPE THIS HELPS YOU :)

Write an integer for the basement floor is 12 feet below the ground?

Answers

Answer:

-12 easy dubs

Step-by-step explanation:

easy

An integer to represent 12 feet below the ground would be -12.

Can someone help please!! Provide workout please!!!

Answers

Answer:

it is 55%

Step-by-step explanation:

I think it is 55 %

60%
12*5= 60
3*8= 24
24/60 = 40
100-40= 60
60%

15q – 4r = 62
5q + 8r = 86

Answers

Answer:

q = 6; r = 7

Step-by-step explanation:

Please help asap!!!

1)
5 - h -18____ = 25

2)
- 15 + 18_ z = - 23

3)
27 + r 2_____ = - 3

4)
26 + n -10______ = 18

5)
19 - b 15_____ = - 17

6)
f - 15 -9_____ = - 13

7)
v + 13 -11_____ = - 20

8)
- 16 - 8d = 10

9)
x - 2 19____ = 21

Answers

Answer:

1 2 3 4 5 6 7 8 9 the answer is 5

Three vertices of parallelogram WZXY are W(-5, 2), X(2, 4) and Z(-7, -3). Find the coordinated of the vertex, Y.

Answers

Answer:

[tex]Y = (4,9)[/tex]

Step-by-step explanation:

Given

[tex]W(x_1,y_1) = (-5, 2)[/tex]

[tex]Z(x_4,y_4) = (-7, -3)[/tex]

[tex]X(x_2,y_2) = (2, 4)[/tex]

Required

Find Y

To do this, we make use of the mid-point formula

i.e.

[tex]M = \frac{1}{2}(x_n+x_m,y_n+y_m})[/tex]

WX and ZY are the diagonals of the parallelogram.

The mid-point of WX is:

[tex]M = \frac{1}{2}(-5+2,2+4)[/tex]

[tex]M = \frac{1}{2}(-3,6)[/tex]

The mid-point of ZY is:

[tex]M = \frac{1}{2}(-7+x,-3+y)[/tex]

Equate both values of M

[tex]\frac{1}{2}(-3,6) = \frac{1}{2}(-7+x,-3+y)[/tex]

Multiply both sides by 2

[tex](-3,6) = (-7+x,-3+y)[/tex]

By comparison:

[tex]-7 + x = -3[/tex]

[tex]-3 + y = 6[/tex]

[tex]-7 + x = -3[/tex]

[tex]x = 7 -3[/tex]

[tex]x = 4[/tex]

[tex]-3 + y = 6[/tex]

[tex]y = 6 +3[/tex]

[tex]y = 9[/tex]

Hence:

[tex]Y = (4,9)[/tex]

what is 4 1/2 times 4 2/3

Answers

Answer:

21

Step-by-step explanation:

Answer:

21 is the answer. hope this helps ✌

could you please help solve 5.a and 5.b

Answers

Answer:

      Step-by-step explanation:

5a = 240.96

5b = 20.08

A student buys
6
music albums and
4
video games. The cost of
1
video game is
$
16
more than the cost of
1
music album.

If the student spends exactly
$
164
, what is the cost of each music album?

Answers

Answer: 10$

Step-by-step explanation:

164 - 4x16 = 100

6 + 4 = 10

100 : 10 = 10

Across which axis the two points are reflections of eachother (2,7) and (-2,7)

Choices :

A: x-axis
B; y-axis

Answers

Y-axis because (2,7) is one the right and (-2,7) is on the left

if 3 people want to share a 50 pound sack of nice equally by weight
, how many pounds of rice will each person get?

A.15 1/3

B. 15 2/3

C. 16 1/3

D. 16 2/3​

Answers

C. 16 1/3 How I got was you need to dived by 3 into 50 that’s how I got 16 and the rest was common sense

Answer:

D . 16 2/3

Step-by-step explanation:

50 will be divided by 3

50/3 = 16 2/3

Can somebody help me?

Answers

Answer:

3rd one

Step-by-step explanation:

the answer is the third one

How do you solve this equation

2x+5y=-2

-2x-7y=6

Answers

Answer: x=4, y=-2

For this system of equations, we can use the elimination method, where two variables from both equations will cancel our (in this case, 2x and -2x.

Adding the equations gives us -2y=4, where solving for y gives us -2.

Plugging -2 into any of the two equations and solving for x will result in x=4.
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