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4 years ago

Help...anyone plzzzzzzzzz

Mathematics

2 answers:

earnstyle [38]4 years ago

7 0

It needs to be at least conjunction because I'm dumb and don't how to do math cause I'm dumb so the answer is -45 (idk)

Arte-miy333 [17]4 years ago

4 0

Can you please take another picture that is closer to the diagram, it's quite blurry.

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What is the next term of the arithmetic sequence? 7,11,15,19,7,11,15,19

natima [27]

Answer:

Step-by-step explanation:

4 times at an addition of 4, then a subtraction of 12

8 0

3 years ago

A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The pr

STatiana [176]

2/20 since the red and he blue section adds up to 18/20. So what is left would be green (2/20).

8 0

3 years ago

Find The slope of the line described<br> by x+2y=8

Harman [31]

Answer:

$Slope = m = \frac{-1}{2}$

Step-by-step explanation:

The equation of a line in slope-intercept form is.

$y = mx + b$ ----->(eq 1)

∴ m is slope

$x+2y=8$

subtract x from both sides.

$x - x +2y= - x + 8$

$2y= - x + 8$

divide - 2 on both sides

$\frac{2y}{2} = \frac{ - x + 8}{2}$

$y = \frac{ - x}{2} + \frac{8}{2}$

$y = \frac{ - 1}{2}x + 4$ ----->(eq 2)

By comparing (eq 1) and (eq 2)

$m = \frac{-1}{2}$

$Slope = m = \frac{-1}{2}$

7 0

3 years ago

(2 1/2)× -8=what is 2 1/2 * -8 equal to

Jlenok [28]

It is -20. try doing it on a calculator!

3 0

3 years ago

Read 2 more answers

The article "Occurrence and Distribution of Ammonium in Iowa Groundwater" (K. Schilling, Water Environment Research, 2002:177–18

Papessa [141]

Answer: 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

Step-by-step explanation:

Since we have given that

Number of alluvial wells = 349

Number of quaternary wells = 143

Number of alluvial wells that had concentrations above 0.1 = 182

Number of quaternary wells that had concentrations above 0.1 = 112

Average of alluvial wells = 0.27

Standard deviation = 0.4

Average of quaternary wells = 1.62

Standard deviation =1.70

So, 95% confidence interval gives

alpha = 5% level of significance.

$\dfrac{\alpha}{2}=2.5\%\\\\z_{\frac{\alpha}{2}}=1.96$

So, 95% confidence interval becomes,

$(1.62-0.27)\pm 1.96\sqrt{\dfrac{0.4^2}{349}+\dfrac{1.7^2}{143}}\\\\=1.35\pm 1.96\times 0.020\\\\=(1.35-0.040,1.35+0.040)\\\\=(1.31,1.39)$

Hence, 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

6 0

3 years ago