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3 years ago

Help me plis I don’t know (11 points)

Mathematics

1 answer:

klasskru [66]3 years ago

5 0

Answer:

D and E

Step-by-step explanation:

Both of these answers are still equal to the fraction -2/5.

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If are AC is 122 degrees and arc BC is 192 degrees, what is the measure of angle ACB

Gemiola [76]

ACB = AC + BC

ACB = 122 + 192 = 314

The answer is b. 314 degrees

4 0

3 years ago

According to a poll, 76% of California adults (385 out of 506 surveyed) feel that education is one of the top issues facing Cali

lina2011 [118]

Answer:

The error bound is 3.125%.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

A sample of 506 California adults.. This means that $n = 506$ .

76% of California adults (385 out of 506 surveyed) feel that education is one of the top issues facing California. This means that $\pi = 0.76$

We wish to construct a 90% confidence interval

So $\alpha = 0.10$ , z is the value of Z that has a pvalue of $1 - \frac{0.10}{2} = 0.95$ , so $z = 1.645$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.76 - 1.645\sqrt{\frac{0.76*0.24}{506}} = 0.7288$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.76 + 1.645\sqrt{\frac{0.76*0.24}{506}} = 0.7913$

The error bound of the confidence interval is the division by 2 of the subtraction of the upper limit by the lower limit. So:

$EBM = \frac{0.7913 - 0.7288}{2} = 0.03125$

The error bound is 3.125%.

3 0

3 years ago

A local diner purchased a jukebox for 9400. The business makes a down payment of 1000 and agrees to pay 36 payments of 275 per m

Rina8888 [55]

Answer:

Finance charge = $1500

Step-by-step explanation:

Cost price of jukebox = $9400

Down payment made by a local diner = $1000

Balance amount to be paid = 9400 - 1000 = $8400

In order to pay the balance amount diner agreed upon the installments = $275 per month for 36 months

Total amount to be paid in 36 months = 275 × 36 = $9900

So extra payment done = Total balance amount - Amount paid in 36 installments

= 9900 - 8400

= $1500

Therefore, finance charge paid by the diner was $1500.

7 0

4 years ago

the sales tax in bill's state is 6%. bill bought a scion having a sales tax of $820. what was the cost of the car? round to the

polet [3.4K]

Since there is a sales tax of 6% which was equal to $820

Let the value be = x

6% of x = 820

(6/100)x = 820

0.06x = 820

x = 820/0.06

x = 13666.67

Value to the nearest dollar ≈ $13 666.67

7 0

3 years ago

The GCD(a, b) = 6, the LCM(a, b)=180. Find the least possible value of a+b.

Fantom [35]

The factors of 180 are
(1, 180), (2, 90), (3, 60), (4, 45), (5, 36), (6, 30), (9, 20), (10, 18), (12, 15).

The GCD of 6 is the largest positive integer that divides 180.
Therefore the required factors of 180 are a=6 and b=30 or vice versa.
a + b = 6 +30 = 36

Answer: 36

3 0

3 years ago