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2 years ago

PLEASE HELP!!! PLEASE HELP!!!

Mathematics

2 answers:

Nostrana [21]2 years ago

5 0

A. x - 6

hope that helps

vodomira [7]2 years ago

5 0

Answer:

Step-by-step explanation:

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3 years ago

The radio is of a circle is 3 millimeters what is the circles circumference

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2 years ago

a jar contains nickels and pennies. there are 56 coins in the jar in all. the total value of the coins is 1.52. how many pennies

nevsk [136]

1 penny is just 1c
one nickel is 5 pennies or 5c

alrite...

p = amount of pennies in the jar
n = amount of nickels in the jar

we know there are 56 coins in the jar, thus whatever "p" and "n" are,

p + n = 56

we also know, the total value of all pennies and nickels is one buck and 52 cents, or 1.52.. that's 152 pennies.

now, we know there are 5 pennies in one nickel, so in "n" nickels, there are 5*n pennies, or 5n, thus

p + 5n = 152

$\bf \begin{cases}
p+n=56\implies \boxed{n}=56-p\\
p+5n=152\\
----------\\
p+5\left( \boxed{56-p} \right)=152
\end{cases}$

solve for "p", to see how many penny coins are there.

what about the nickels? well, n = 56 - p.

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3 years ago

what are the two major advantages of experimental research over correlational studies? multiple select question. experiments are

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The experimental research has two key advantages over correlational studies.

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Correlational studies merely examine the data that already exists, whereas experimental studies give the researcher the opportunity to influence the study's factors. Researchers can make inferences about how changes in one variable affect changes in another through the use of experimental investigations.

The factors in a correlation study are out of the control of the researcher or research team. The researcher merely measures the information she discovers in the outside world. She can then determine whether changes in one are related to changes in the other, or if the two variables are correlated. In such a study, experimenters gather existing data and use statistical methods to examine it, such as economic statistics from governments. The findings of correlation studies can lead to hypotheses that can be verified through a more focused experimental one.

To learn more about correlational research visit:

brainly.com/question/14375687

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2 years ago