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natima [27]
3 years ago
9

An auditorium has 50 rows of seats. The first row has 20 seats, the second row has 21 seats, the third row has 22 seats, and so

on, each row having one more seat than the previous row. How many seats are there altogether?
Mathematics
1 answer:
Vikentia [17]3 years ago
4 0

Answer:

1050

Step-by-step explanation:

I'm pretty positive it would be 1050 by multiplying 50 and 20 and adding 50

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emmasim [6.3K]

Answer:

x ≤ - \frac{1}{3}

Step-by-step explanation:

Given

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8 0
3 years ago
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A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a​ single-strand electric
otez555 [7]

Answer:

dimension are 350 m and 350 m  and

area is 122500 m²

Step-by-step explanation:

Given data

perimeter is 700 m

to find out

the largest area and its​ dimensions

solution

we consider x and y are the sides

so area is xy

perimeter is 2x+ y = 700

so we can say y = 700 -2x

so area will be = x (700 - 2x)

area = 700x - 2x²

we take derivative here and equal to zero

dA/dt = 700x - 2x²

700 - 4x = 0

x = 700/4

x = 175

so will be

y = 700 -2x

y = 700 -2(175)

y = 350

so dimension are 350 m and 350m

area is 122500 m²

3 0
3 years ago
What’s the answer to #12? and why
Elena L [17]
Remark
If there are 5 distinct zeros that means either that the x axis is crossed the x axis 5 different places or touched the x axis in 1 place out the 5. Touching in one place means that an even number of roots are the same. 

So let's go through all of them to get an answer of 5.

A has 4 x intercepts. It is not the right answer. We need 5.
B has 4 x intercepts. It is not the right answer. We need 5.
C has 6 x intercepts. Not the one we want.
D has 5 x distinct zeros. The wording is a bit tricky. It does not matter than one of them just touches the x axis. There could be an even number of distinct zeros there, but it only counts as one root.

An example of such a graph is f(x)=\left(\frac{1}{10}(x+2)(x+1.5)(x+1)(x-2)^4(x-3)\right)
 
Answer D <<<<<


6 0
3 years ago
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erma4kov [3.2K]
Square root of 25 is 5 because 5x5=25
5 0
3 years ago
Which number set has only irrational numbers? A) {-7.4, 0, 3.14} B) { 8 , 9 , 10 } C) {- 5 6 , 7 8 , π 2 } D) { 2 , 5 , π}
melomori [17]
Im doing it right now and my best choice is going to have to be D Sorry if im wrong but i noticed that no one answered and i decided to give a shot again im sorry if it's wrong. Have a nice day! :3
7 0
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