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Tju [1.3M]
3 years ago
15

What is the area of this triangle?Enter your answer in the boxUnits:​

Mathematics
1 answer:
JulsSmile [24]3 years ago
3 0
The answer is 12 units
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1609<br> A<br> C<br> B.<br> What is the mZABC ?
Free_Kalibri [48]

Answer:

< ABC = 80

Step-by-step explanation:

Inscribed Angle = 1/2 Intercepted Arc

< ABC = 1/2 ( 160)

< ABC = 80

3 0
2 years ago
What repeated addition equals to 3/4<br><br><br><br><br> Good luck シ
Marina86 [1]

Answer:

1/4 x 3 or 1/4+1/4+1/4

Step-by-step explanation:

1/4 + 1/4 + 1/4

2/4+1/4

3/4

3 0
2 years ago
Read 2 more answers
Simplify the expression -(-7y + 12)
Natali5045456 [20]
-(-7y+12)
=-(-7y)-(12)
=7y-12
4 0
3 years ago
A sample of size 100 is selected from a population with p = .40.
zhuklara [117]

Answer:

(a) 0.40

(b) 0.049

(c) \bar p\sim N(0.40,0.049^{2})

(d) Explained below

Step-by-step explanation:

According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

 E(\bar p)=p

The standard deviation of this sampling distribution of sample proportion is:

 SE(\bar p)=\sqrt{\frac{p(1-p)}{n}}

Given:

n = 100

p = 0.40

As <em>n</em> = 100 > 30 the Central limit theorem is applicable.

(a)

Compute the expected value of \bar p as follows:

E(\bar p)=p=0.40

The expected value of \bar p is 0.40.

(b)

Compute the standard error of \bar p as follows:

SE(\bar p)=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.40(1-0.40)}{100}}=0.049

The standard error of \bar p is 0.049.

(c)

The sampling distribution of \bar p is:

\bar p\sim N(0.40,0.049^{2})

(d)

The sampling distribution of p show that as the sample size is increasing the distribution is approximated by the normal distribution.

3 0
3 years ago
Use parentheses to show two ways of grouping the numbers in 12 • 8 • 25. Tell which expression you think would be easier to simp
Natalija [7]

Step-by-step explanation:

First no. is 12

Second no. is 8

Third no. of 25

Way 1 of grouping the numbers,

(12×8)×25

We can use associative law of multiplication as follows :

(a×b)×c = a×(b×c)

(12×8)×25 = (96) × 25

= 2400

Way 2,

12×(8×25) = 12 × 200

= 2400

Way 2 is easier to simplify because when we multiply 8 and 25, we get 200. It is very easy to multiply any number with a number that have zeroes. As a result we easily get the answer i.e. 2400.

5 0
2 years ago
Read 2 more answers
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