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babymother [125]
2 years ago
14

[Choose} PLEEASE HELP

Mathematics
2 answers:
matrenka [14]2 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]2 years ago
4 0

Answer:

i think the second one

Step-by-step explanation:

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Emerson is making costumes for the
Elis [28]

9514 1404 393

Answer:

  13 costumes

Step-by-step explanation:

The amount of fabric used is the product of the amount per costume and the number of costumes.

  A = na . . . . . A = total area; n = number of costumes; 'a' = area per costume

  46 2/3 = n(3 1/2)

  n = (46 2/3)/(3 1/2) = (140/3)/(7/2) = (140/3)(2/7) = 40/3 = 13 1/3

Apparently there is some waste, as Emerson used more fabric than necessary to make 13 costumes.

6 0
2 years ago
Explain what Event-Driven Programs are (Use all of the following words in your description: Call-back function, on-events, algor
ASHA 777 [7]

Answer:

Step-by-step explanation:

An event driven programs are process of programming by which an algorithm is written by programming on a UI element, placing an event listener such that it handled when triggered by calling a call-back function.

E.g is a click event on a button which is a UI element. An event listener example, mouse down can placed on it, and if a user mouse down on it, it is handled by calling a call-back function which might be to open a new page on website.

4 0
3 years ago
The quotient of four times a number and nine in an algebraic expression
amid [387]

Answer:

4x/9

Step-by-step explanation:

3 0
3 years ago
What is 2+2-5×6? ill mark brainliest​
andrey2020 [161]

Answer:

-26

Step-by-step explanation:

2+2−(5)(6)=

-26

7 0
3 years ago
Read 2 more answers
I am having trouble with question 7 onwards to q10 anyone mind helping/teach me?
zaharov [31]
~7)~
(3×4×5)
=1.585 + 2 + 2.322
=5.907
~8)
(3÷2÷5)
=1.585 - 1 - 2.322
=-1.737
9)3log7(2) -2log7(3) + 4log7(3) -2log7(2)
=0.356+2(0.565)
=1.486
9)x(x+2)=8
x=2
10)x/(2x+3)=1/9
9x=2x+3
x=3/7

Hope this helps
8 0
3 years ago
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