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fiasKO [112]
3 years ago
14

PLEASE HELP ME ima dumb and really bad at math :(((( !!

Mathematics
2 answers:
Oksanka [162]3 years ago
8 0

Answer:

-27,0

Step-by-step explanation:

I think, not entirely sure tho.

son4ous [18]3 years ago
3 0
-27 is the answer ...... i might be wrong
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(6x2 - 4x – 5) – (3x2 – 7x + 2)
galben [10]

Answer: 3x2 + 3x - 7

Step-by-step explanation: The first term is,  3x2  its coefficient is 3

The middle term is, +3x  its coefficient is 3

The last term, the constant, is  -7

1.Multiply the coefficient of the first term by the constant   3 times -7 = -21

2. Find two factors of  -21  whose sum equals the coefficient of the middle term, which is 3

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3 years ago
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Find the diameter of a sphere with a surface area of 196π square centimeters
aleksandr82 [10.1K]

\textit{surface area of a sphere}\\\\ SA=4\pi r^2 ~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ SA=196\pi \end{cases}\implies \begin{array}{llll} 196\pi =4\pi r^2\implies \cfrac{196\pi }{4\pi }=r^2 \implies 49=r^2 \\\\\\ \sqrt{49}=r\implies 7=r~\hfill \underset{diameter}{\stackrel{2(7)}{14}} \end{array}

7 0
2 years ago
Recall the following study: Over a 17-year period researchers studied a sample of 707 individuals from a single community. They
IgorC [24]

Answer:

Hence the answer is option c ; poverty and neighborhood conditions

Step-by-step explanation:

From the research, it is well known that both the dependent variable and independent variable will be taken into consideration before arriving at a conclusion.

A dependent variable is the variable that is been studied or measured i.e the results of a scientific research.

An independent variable is a variable that is been altered or controlled for and whose effects are compared to the results of the dependent variable, as such the results of  a dependent variable is dependent on the alteration of the parameters of an independent variable.

From the question ; the dependent variable is sample of 707 individuals from a single community while the independent variable ; the number of hours each individual spent watching television during adolescence and early adulthood.

The word confound in statistics implies a variable which has a greater effects on both the dependent and the independent variable.

Hence the answer is option c ; poverty and neighborhood conditions

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4 years ago
Please help me please thank you so much in advance
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Step-by-step explanation:

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Answer:its 7

Step-by-step explanation:

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