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4 years ago

A guppy was swimming 8 feet below the surface of the river. It swam down 6 more feet

Mathematics

2 answers:

viva [34]4 years ago

8 0

Answer:

Step-by-step explanation:

The answer should of been -14

Mashutka [201]4 years ago

5 0

Answer:

-8 feet

Step-by-step explanation:

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Determine the 16th term of the sequence 9, 18, 36.... r________?

raketka [301]

Answer:

$a = 9 \\ d = 9 \\ a_{16} = a + 15d = 9 + 15 \times 9 = 9 + 135 \\ = > a_{16} = 144 \\ = = = = = = = = = =$

HOPE U UNDERSTOOD

PLEASE COMMENT

THANKS..

4 0

3 years ago

Dividing polynomials simplify 10c+6÷2

blsea [12.9K]

Answer: 5c+3

Step-by-step explanation: divide regularly. Just keep the C after the 10. I'm not good at explain math sorry.

7 0

4 years ago

What does y + x > 2 equal too? Solve for y

Contact [7]

Y equals 4 hope i could help

4 0

4 years ago

Taking a test i don’t know anything about please help

PilotLPTM [1.2K]

Answer:

See below for answers and explanations

Step-by-step explanation:

Problem 4:

The line of regression is $\hat y = a+bx$ where:

$a=\overline y-b \overline x$

$b=\frac{r*s_y}{s_x}$

We are given that $\overline y=75$ , $s_y=8$ , $\overline x=280$ , $s_x=30$ , and $r=0.60$ , therefore our slope, $b$ , is:

$b=\frac{r*s_y}{s_x}$

$b=\frac{(0.60)(8)}{30}$

$b=0.16$

Therefore, the slope of the regression line is 0.16, which can be used along with the values of $\overline y$ and $\overline x$ to find the constant $a$ :

$a=\overline y-b \overline x$

$a=75-(0.16)(280)$

$a=30.2$

This means our final regression line is $\hat y = 30.2 + 0.16x$

Problem 5:

The slope, $b=0.16$ , means that for every 1 point earned for a student's pre-exam total, their final exam score will increase by 0.16 points for each point they earned on the pre-exam.

Problem 6:

The y-intercept (or constant), $a=30.2$ , means that if a student's pre-exam total were 0, then they would expect to get a 30.2 on the final exam.

Problem 7:

$R^{2}=(0.60)^{2}=0.36=36\%$

Problem 8:

The fraction of variability (aka. coefficient of determination), $R^2$ , means that a certain proportion (or percentage) of the variance in the response variable can be explained by the explanatory variable. In context, this means that 36% of the variance in final exam scores can be explained by the pre-exam scores.

6 0

3 years ago

Simplify the expression. Explain each step. 6(2b)

8_murik_8 [283]

Answer:12b

Step-by-step explanation:

Here,

We have only one variable

So we can multiply it with number

=6×2b

=12b

Hope it helps you

Plz mark me brainliest.

3 0

3 years ago

Read 2 more answers