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3 years ago

What is the follow button for here on BRAINLY????

Mathematics

1 answer:

kotegsom [21]3 years ago

4 0

Answer:

you go to a person page you want to follow and than click on little person with + sing.

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I need help with this

zepelin [54]

Answer:

Step-by-step explanation:

A for apple....

Dwuhhhhhhhhhhhhh

Isss ezeewer dan anytwing

4 0

3 years ago

Write the exact value of the area of a square with a side length of √30 square units? *

liberstina [14]

Answer:

$A=30u^2$

Step-by-step explanation:

Information that we know about the square:

side length: $l=\sqrt{30u^2}$ which can asol be expressed as: $l=\sqrt{30}u$

we can use this information to calculate the area by the formula for the area of a square:

$A=l^2$

we subtitute the side length:

$A=(\sqrt{30}u )^2$

the square root and the squared exponent cancel each other out (because they are opposite operations) and since this is an area it must have squared units:

$A=30u^2$

The exact value of the area of the square is $30u^2$

6 0

3 years ago

A sample of 8 buttons is randomly selected and the following diameters are measured in inches. Give a point estimate for the pop

kenny6666 [7]

Answer:

$\bar X= \frac{1.83+1.85+1.79+1.73+1.69+1.74+1.76+1.70}{8}= 1.76125$

Now we can estimate the population variance with the sample variance given by:

$s^2 = \frac{\sum_{i=1}^n (x_i -\bar X)^2}{n-1}$

And replacing we got:

$s^2 = 0.0033839$

And the estimator for the population deviation $\sigma$ is given by :

$\hat \sigma = \sqrt{s^2}= \sqrt{0.0033839}= 0.058172$

Step-by-step explanation:

For this case we have the following data given:

1.83,1.85,1.79,1.73,1.69,1.74,1.76,1.70

First we need to calculate the mean with the following formula:

$\bar X= \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X= \frac{1.83+1.85+1.79+1.73+1.69+1.74+1.76+1.70}{8}= 1.76125$

Now we can estimate the population variance with the sample variance given by:

$s^2 = \frac{\sum_{i=1}^n (x_i -\bar X)^2}{n-1}$

And replacing we got:

$s^2 = 0.0033839$

And the estimator for the population deviation $\sigma$ is given by :

$\hat \sigma = \sqrt{s^2}= \sqrt{0.0033839}= 0.058172$

7 0

4 years ago

Solve the equation. - 1/3m – 7 = 5 A. –4 B. –15 C. –36 D. 6

velikii [3]

−1/3‌m−7=5Add 7 to both sides.‌−1/3‌m−7+7=5+7
‌−1/3‌m=12Multiply both sides by 3/(-1).(‌3/−1‌)*(‌−1/3‌m)=(‌3/−1‌)*(12)m=−36Answer:m=−36

7 0

4 years ago

What is negative 6x squared take away 586 =84x take away 4

olchik [2.2K]

Answer:

This equation has no real roots

Step-by-step explanation:

We want to solve

$- 6 {x}^{2} - 586 = 84x - 4$

We group all terms on the left:

$- 6 {x}^{2} - 84x - 586 + 4 = 0$

$- 6 {x}^{2} - 84x - 582= 0$

Divide through by -6

${x}^{2} + 14x + 97 = 0$

The discriminant is

${14}^{2} - 4 \times 1 \times 97 = - 192$

This means the given equation has no real solution, since the discriminant is less than 0

6 0

3 years ago