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konstantin123 [22]
3 years ago
6

mrs. kelly asked her students to plot the number of books they read over summer. Using the dot plot, how many students answered

the question?

Mathematics
1 answer:
il63 [147K]3 years ago
8 0

Answer:

18

Step-by-step explanation:

Add all the dots. 2+1+3+2+6+3+1=18

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Please help me with this faster pleaseeeeeee
elena55 [62]

The answer is D

1) Add all the hours to get 32.9

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4 0
3 years ago
The population of a species is modeled by the equation p(t)=-t^4+72t^2+225, where t is the number of years. find the approximate
Shtirlitz [24]

Answer:

The approximate number of years until the species is extinct will be 9 years

Step-by-step explanation:

We are given

The population of a species is modeled by the equation

p(t)=-t^4+72t^2+225

where

t is the number of years

we have to find time when species extinct

we know that any species will be extinct only if population of that species becomes 0

so, we can set P(t)=0

and then we can solve for t

p(t)=-t^4+72t^2+225=0

we can factor it

(t^2+3)(t^2-75)=0

(t^2+3)=0

we get t value as imaginary for this equation

(t^2-75)=0

t=\sqrt{75}

t=8.660

So,

the approximate number of years until the species is extinct will be 9 years

8 0
4 years ago
When the sum of a number and 3 is subtracted from 10 the result is 5 solve om algebraic equation?
german

Answer:

y = 2

Step-by-step explanation:

Algebraic Equation is an equation where alphabets are used to represent numbers.

Solving the above question,

Let the number = y

Therefore,

Sum of the number = y + 3

If it's subtracted from 10 it becomes

10 - ( y + 3 )

The result : 10 - y - 3 = 5

- y = 5 - 10 + 3

- y = -2

Therefore,

y = 2

5 0
2 years ago
How would i get the letter in 42n alone?
larisa86 [58]
42n, you can't take the "n" away. The "n" means times a number, so I I write n=2, then the expression will be 42 x 2, substitute the n with a 2
4 0
4 years ago
Read 2 more answers
What is the slope of the straight line through points (2,10) and (5,8)
weeeeeb [17]
The slope is m= -2/3.
mark brainiest plz 
4 0
4 years ago
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