3 years ago

[Choose} PLEEASE HELP

Mathematics

2 answers:

matrenka [14]3 years ago

4 0

Answer:

experimental study

Step-by-step explanation:

observational study: no variable is controlled by researchers

experimental study: a variable is controlled by researchers

survey: a survey is similar to a poll

Mumz [18]3 years ago

4 0

Answer:

i think the second one

Step-by-step explanation:

You might be interested in

This holiday season, Ms. Bastarache organized to give each 9th grader a $10 Dunkin Donuts gift card. Because she bought a lot of

Mila [183]

Answer:

1. $950

2. 80

Step-by-step explanation:

8 0

3 years ago

In the year 2005, a total of 750 fish were introduced into a manmade lake. The fish population was expected to grow at a rate of

tangare [24]

The population of the fish is given by P(t) = 750(1 + 0.083)^t; where t is the number of years after 2005.
Here, t = 2050 - 2005 = 45

Population in 2050 = 750(1.083)^45 = 750(36.16) = 27,123

8 0

3 years ago

Read 2 more answers

Find the sum of 2xSquared+3x-4,8-3x, and -5x squared+2

Tomtit [17]

2x^2 +3x -4 + 8 - 3x -5x^2 +2
answer is

-3x^2 +6

hope that helps

8 0

3 years ago

John has a job selling souvenirs on a football stadium. He earns $10 per game plus $0.25 dollars for each souvenir he sells. How

Ahat [919]

Answer:

He needs to sell 100 souvenirs

Step-by-step explanation:

We want to know the number of souveniers John has to sell

Let the number of souveniers he sold at the game be s

At a rate of $0.25 per souvenier, the amount earned on souveniers for s souveniers will be:

$0.25 \times s =0.25s$

Now, if we added this to the amount he earns per game, we will have the total $35 earned for working at one game.

Thus, mathematically:

$0.25s + 10 = 35 \\ 0.25s = 35 - 10 \\ 0.25s = 25 \\ s = \frac{25}{0.25} \\ s = 100$

7 0

2 years ago

What is the answer to this -11 - (-3)

BaLLatris [955]

Answer:

-8

Step-by-step explanation:

-11 - (-3) =

(-11) + 3

-8

5 0

2 years ago

Read 2 more answers