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2 years ago

Can someone tell me if this is right

Mathematics

1 answer:

Ivan2 years ago

3 0

No you have to right

2:1

4:2

6:3

8:4

These are correct

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GIVING BRANLIEST

ivann1987 [24]

Complementary and adjacent

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3 years ago

What is the simplified form of this expression, written in scientific notation? (3.276×105)×400,000÷(3.9×106)

vlada-n [284]

(343.98)x400,000/(413.4)
137,592,000/413.4
332,830.188679

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3 years ago

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Ivan has 15 yards of green felt and 12yards of blue felt to make 3 quiltsif ivan uses the same total number of yards for each qu

Juliette [100K]

ivan used 5 yards of green for each quilt and 4 yards of blue for each quilt.

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2 years ago

An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n

kramer

Answer:

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 232 V

Sample mean, $\bar{x}$ = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 232\\H_A: \mu \neq 232$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{231.5- 232}{\frac{2.19}{\sqrt{66}} } = -1.8548$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = \pm 1.9971$

Since,

$|t_{stat}| > |t_{critical}|$

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

4 0

2 years ago

I will give brainliest

mars1129 [50]

Answer:

5^2 or 25

Step-by-step explanation:

5^6/5^4 = 5^2

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3 years ago

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