What is seven eighth divided by seven negative four

Convert 5.764764764 … to a rational expression in the form of , where b ≠ 0

Lina20 [59]

$x=5.764764\ldots=5.\overline{764}$
$1000x=5764.\overline{764}$

$1000x-x=5764.\overline{764}-5.\overline{764}$
$999x=5759$
$x=\dfrac{5759}{999}$

7 0

4 years ago

Plz guys cmonnnnn there's gonna be more. WILL GIVE BRAINLIEST

Brums [2.3K]

Answer:

$6.3 \le p \le 8.1$

The third reading must be between 6.3 and 8.1 inclusive.

Step-by-step explanation:

To find the average of three numbers, add the three numbers and divide by 3.

Let the third reading = p.

The average of the three readings is

$\dfrac{7.4 + 7.9 + p}{3}$

This average must be between 7.2 and 7.8 inclusive. "Inclusive" means that the values 7.2 and 7.8 are allowed. That means the average must be greater than or equal to 7.2 and less than or equal to 7.8. We can write this as the following inequality.

$7.2 \le \dfrac{7.4 + 7.9 + p}{3} \le 7.8$

Simplify the numerator.

$7.2 \le \dfrac{15.3 + p}{3} \le 7.8$

Multiply the three sides by 3.

$21.6 \le 15.3 + p \le 23.4$

Subtract 15.3 from the three sides.

$6.3 \le p \le 8.1$

Answer: The third reading must be between 6.3 and 8.1 inclusive.

7 0

3 years ago

Written as a rate, 32 miles in 8 hours would be ____ miles per hour.

Andre45 [30]

The answer to your question would be 4 miles an hour

6 0

3 years ago

A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 449 gram setting. It is

stealth61 [152]

Answer:

We accetp H₀

Step-by-step explanation:

Information:

Normal distribution

Population mean = μ₀ = 449

Population standard deviation σ unknown

Sample size n = 23 n < 30 we use t-student test

so n = 23 degree of fredom df = n - 1 df = 23- 1 df = 22

Sample mean μ = 448

Sample standard deviation s = 20

Significance level α = 0,05

1.-Hypothesis Test

Null hypothesis H₀ μ₀ = 449

Alternative hypothesis Hₐ μ₀ ≠ 449

Problem statement ask for determine decision rule for rejecting the null hypothesis. For rejecting the null hypothesis we have to get an statistic parameter wich implies that μ is bigger or smaller than μ₀

2.-Significance level α = 0,05 ; as we have a two tail test

α/2 = 0,025

Then from t - student table for df = 22 and 0,025 (two tail-test)

t(c) = ± 2.074

3.- Compute t(s)

t(s) = ( μ - μ₀ ) / s /√n

plugging in values

t(s) = (448 - 449) / 20 /√23 ⇒ t(s) = - 1*√23 /20

t(s) = - 0.2398

4.-Compare t(c) and t(s)

t(s) < t(c) - 0.2398 < - 2.074

Therefore t(s) in inside acceptance region. We accept H₀

7 0

4 years ago

Evaluate the following expression if x = 3. x2

PtichkaEL [24]

Answer:

6

Step-by-step explanation:

x2

x=3

sub 3 into x

(3)2

=6

4 0

3 years ago