All categories

3 years ago

HELP PICTURE IS SHOWN

Mathematics

1 answer:

Scrat [10]3 years ago

8 0

The chord is 7 units, provided that the radius intersects it in its midpoint. The length of AB is 7.

You might be interested in

suppose a compact car uses 1 gallon of fuel for every 27 miles traveled. how would the graph for the compact car compare to the

VikaD [51]

We dont have enough information to answer the question i need the picture to compare my answer to bc (im assuming) its asking to compare how much gas the car in the equation uses vs the one in the graph

4 0

3 years ago

To decrease the impact on the environment, factory chimneys must be high enough to allow pollutants to dissipate over a larger a

Komok [63]

Answer:

The probability hat the sample mean height for the 40 chimneys is greater than 102 meters is 0.1469.

Step-by-step explanation:

Let the random variable X be defined as the height of chimneys in factories.

The mean height is, μ = 100 meters.

The standard deviation of heights is, σ = 12 meters.

It is provided that a random sample of n = 40 chimney heights is obtained.

According to the Central Limit Theorem if we have an unknown population with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from the population with replacement, then the distribution of the sample means will be approximately normally distributed.

Then, the mean of the distribution of sample means is given by,

$\mu_{\bar x}=\mu$

And the standard deviation of the distribution of sample means is given by,

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}$

Since the sample selected is quite large, i.e. n = 40 > 30, the central limit theorem can be used to approximate the sampling distribution of sample mean heights of chimneys.

$\bar X\sim N(\mu_{\bar x},\ \sigma^{2}_{\bar x})$

Compute the probability hat the sample mean height for the 40 chimneys is greater than 102 meters as follows:

$P(\bar X>102)=P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}})>\frac{102-100}{12/\sqrt{40}})$

$=P(Z>1.05)\\=1-P(Z$

*Use a z-table fr the probability.

Thus, the probability hat the sample mean height for the 40 chimneys is greater than 102 meters is 0.1469.

8 0

2 years ago

Factor the expression below 36a2-25b2 which binomial is factor of the expression

Serhud [2]

Answer: (6a + 5b) • (6a - 5b)

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "b2" was replaced by "b^2". 1 more similar replacement(s).

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(36 • (a2)) - 52b2

Step 2 :

Equation at the end of step 2 :

(22•32a2) - 52b2

Step 3 :

Trying to factor as a Difference of Squares :

3.1 Factoring: 36a2-25b2

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : 36 is the square of 6

Check : 25 is the square of 5

Check : a2 is the square of a1

Check : b2 is the square of b1

Factorization is : (6a + 5b) • (6a - 5b)

Final result :

(6a + 5b) • (6a - 5b)

brainly would epic!

7 0

3 years ago

Read 2 more answers

Change 2y-3+18 to the distributive property

Alexxandr [17]

2(y-3) +18

That’s what it looks like

6 0

2 years ago

3 15/16 divided by 2 5/8Ask your question here

Alexeev081 [22]

$\frac{3 \frac{15}{16} }{2 \frac{5}{8}} \\ \\ \frac{ \frac{63}{16} }{ \frac{21}{8} } \\ \\ \frac{63}{16}*\frac{8}{21} \\ \\ \frac{63*8}{16*21} \\ \\ \frac{504}{336} \\ \\ 1 \frac{168}{336} \\ \\ 1 \frac{168:168}{336:336} \\ \\ 1 \frac{1}{2}$

3 0

2 years ago