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1 year ago

What point is located at (1,-2)?

Mathematics

1 answer:

guapka [62]1 year ago

6 0

Answer:

At point A

Step-by-step explanation:

As the x axis has -2 and y axis has 1

They are present in second quadrant

so (-1,2) is in point A

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#25-5: What percent of the regular price does the customer pay if he gets a 9% discount?

prisoha [69]

Answer:

91%

Step-by-step explanation:

if x = regular price, convert 9% into a decimal and then multiply. Finally x-(the product of the regular price and 9%) If x=100, substitute and you will get 91 and so you are basically paying 91% of the price

3 0

4 years ago

Consider the population of four juvenile condors. Their weights in pounds are : 4, 5, 7, 12 (a) Let x be the weight of a juvenil

creativ13 [48]

Answer:

a) 4, 5, 7, 12

b) 7

c) 4.5, 6.5, 8, 6, 8.5, 9.5

d) 7.167

Step-by-step explanation:

We are given the following in the question:

4, 5, 7, 12

a) unique values for x

4, 5, 7, 12

b) mean of the population

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$\mu =\displaystyle\frac{28}{4} = 7$

c) sampling distribution for samples of size 2

Sample size, n = 2

Possible samples of size 2 are (4,5),(4,7),(4,12),(5,7),(5,12),(7,12)

Sample means are:

$\bar{x_1} = \dfrac{4+5}{2} = 4.5\\\\\bar{x_2} = \dfrac{4+7}{2} = 6.5\\\\\bar{x_3} = \dfrac{4+12}{2} = 8\\\\\bar{x_4} = \dfrac{5+7}{2} = 6\\\\\bar{x_5} = \dfrac{5+12}{2} = 8.5\\\\\bar{x_6} = \dfrac{7+12}{2} = 9.5$

Thus, the list is 4.5, 6.5, 8, 6, 8.5, 9.5

d) mean of the sampling distribution

$\bar{x} = \dfrac{4.5 + 6.5 + 8+ 6 + 8.5+ 9.5}{6} = \dfrac{43}{6} = 7.167$

6 0

3 years ago

95% of people in my street have a car. There are 160 people in my street. how many do not have a car?

Over [174]

Answer:

8 people on your street do not have a car.

Step-by-step explanation:

So we know that 95% of people have a car. There are 160 people on your street and your are trying to find out how many people do not have a car.

If 95% of people have a car, then 100% - 95% of people, or 5% of people, do not have a car. Using this we can find how many of the 160 people on your street do not have a car. To do this, we would multiply the percent of people who do not have a car (5%, or 0.05) by the number of people on your street (160).

5% × 160 = 0.05 × 160 = 8

8 people on your street do not have a car.

I hope this helps. :)

7 0

3 years ago

The lengths of two sides of a triangle are 10 and 24, and the third side is x. How many whole number values are possible for x.

solong [7]

Answer:

$20$ .

Step-by-step explanation:

In any triangle, the sum of the lengths of any two sides should be strictly greater than the length of the third side. For example, if the length of the three sides are $a$ , $b$ , and $c$ :

$a + b > c$ ,

$a + c > b$ , and

$b + c > a$ .

In this question, the length of the sides are $10$ , $24$ , and $x$ . The length of these sides should satisfty the following inequalities:

$10 + 24 > x$ ,

$10 + x > 24$ , and

$24 + x > 10$ .

Since $x > 0$ , the inequality $24 + x > 10$ is guarenteed to be satisfied.

Simplify $10 + 24 > x$ to obtain the inequality $x < 35$ .

Similarly, simplify $10 + x > 24$ to obtain the inequality $x > 14$ .

Since $x$ needs to be a whole number, the greatest $x$ that satisfies $x < 35$ would be $34$ . Similarly, the least $x\!$ that satisfies $x > 14$ would be $15$ . Thus, $x\!\!$ could be any whole number between $15\!$ and $34\!$ (inclusive.)

There are a total of $34 - 15 + 1 = 20$ distinct whole numbers between $15$ and $34$ (inclusive.) Thus, the number of possible whole number values for $x$ would be $20$ .

5 0

3 years ago

To solve the equation −x − 3 = x2 − 2x− 15, you could graph of the following system. y = −x − 3 y = x2 − 2x − 15 Use the graph o

soldier1979 [14.2K]

Answer:

I think option (D) 4 is correct

7 0

3 years ago