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3 years ago

Simplify -2(3 +1) + 5

Mathematics

2 answers:

Serga [27]3 years ago

8 0

Answer:

-3

Step-by-step explanation:

-2(4)+5 = -8+5= -3

Hope this helps :D

salantis [7]3 years ago

6 0

Answer:

-3 can i pplzz have brainliest

Step-by-step explanation:

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Thank you now help please

swat32

If it is #17 this:

the class sold 45 sandwiches and collected $150.75, all you need to do is divide.

150.75/45
= 3.35

$3.35 per sandwitch

4 0

3 years ago

The population of rabbits on an island is growing exponentially. In the year 1991, the population of rabbits was 9100, and by 19

lisabon 2012 [21]

Answer:

$39,223\ rabbits$

Step-by-step explanation:

we know that

The equation of a exponential growth function is given by

$y=a(1+r)^x$

where

y is the population of rabbits

x is the number of years since 1991

a is the initial value

r is the rate of change

we have

$a=9,100$

substitute

$y=9,100(1+r)^x$

For the year 1998

the number of years is equal to

x=1998-1991=7 years

we have the ordered pair (7,18,000)

substitute in the exponential equation and solve for r

$18,000=9,100(1+r)^7$

$(18,000/9,100)=(1+r)^7$

elevated both sides to 1/7

$(1+r)=1.1023$

$r=0.1023$

therefore

$y=9,100(1+0.1023)^x$

$y=9,100(1.1023)^x$

Predict the population of rabbits in the year 2006

Find the value of x

x=2006-1991=15 years

substitute the value of x in the equation

$y=9,100(1.1023)^{15}$

$y=39,223\ rabbits$

6 0

3 years ago

A Simple Random Sample reflects that ________ individual in the population has an ________ chance of being selected.

monitta

Answer:

any, equal

Step-by-step explanation:

A Simple Random Sample reflects that any individual in the population has an equal chance of being selected.

7 0

3 years ago

(5x-6) + (2x-6)add the polynomials

Thepotemich [5.8K]

In this question, let's add those polynomials

(5x-6) + (2x-6)

5x -6 +2x -6 <em>Combine like terms</em>

7x -12

Since this is not an equation, no further step can be done.

8 0

1 year ago

65%of 186 = show how you did it so i can learn how to do it please

Natali [406]

It is pretty simple
All you have to do is multiply 186 times .65 which you get 120.9
So that's all you have to do

6 0

3 years ago

Read 2 more answers