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3 years ago

What happens when you multiply 2 negative numbers?

Mathematics

2 answers:

dalvyx [7]3 years ago

3 0

1) either you'll get a negative number
Or
2) You'll get a positive Number..
But I'm guess you'll get a positive number

kari74 [83]3 years ago

3 0

The result is a positive number. Negative times negative is a postive

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Hell meeeeeeeeeeee please

DiKsa [7]

Answer:

OOOOOOOOHHH SHUTE BROTHER SORRY WISHED I COULD HELP but im blonde so sowwy

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2 years ago

Which expression correctly determines PR in triangle PQR?

Kobotan [32]

What are the expressions?? is there suppose to be options or diagrams??

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2 years ago

AYY HELP I WANNA PASS MATH CLASS LOL

stepladder [879]

Answer:

Points on the graph:

(0, 0)

(1, 4)

(2, 8)

Step-by-step explanation:

Just input the first 4 values for x:

(0, y)

y = 4x

y = 4(0)

y = 0

(1, y)

y = 4x

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3 years ago

A chemist examines 15 geological samples for potassium chloride concentration. The mean potassium chloride concentration for the

Lelu [443]

Answer:

95% Confidence interval: (0.375,0.377)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = 0.376 cc/cubic meter

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation, s = 0.0012

Degree of freedom =

$=n-1\\=15-1\\=14$

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.145$

$0.376 \pm 2.145(\dfrac{0.0012}{\sqrt{15}} )\\\\ = 0.376 \pm 0.0006\\\\ = (0.3754,0.3766)\approx (0.375,0.377)$

(0.375,0.377) is the required 95% confidence interval for the population mean potassium chloride concentration.

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2 years ago

What is KN + IK?<br> !it’s not 1!

sergiy2304 [10]

The answer is 6, K-N is 4, and I-K is 2, and as we all know, 4+2=6

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2 years ago