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3 years ago

Please answer this ASAP

Mathematics

2 answers:

Lady_Fox [76]3 years ago

7 0

Answer:

7. b) 4 feet

8. 3 and -3

9. a) 25

b) 18

c) -10

d) 0 means he neither recieved nor spent money

10.

e) 22

f) 16

g) -43

h) -8

Step-by-step explanation:

Fudgin [204]3 years ago

7 0

Answer:

Step-by-step explanation:

Absolute value is expressed with || around a number

It is the distance a number is from 0 on a number line, and it can't be negative (unless it's expressed like -|4| then it will equal -4)

example: |-4| = 4

10) e) 22

f) 16

g) -43

h) -8

7) D, 7+3= 10 (the cardinal is 7 feet above, and the shark is 3 feet below. so add them to get the total distance)

8) -3 is the opposite (3 to the right of 0 equals 3, but 3 to the left is -3)

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The relationship between the standard normal random variable z and normal random variable X is that :

alisha [4.7K]

Answer:

(B) The standard normal variable Z counts the number of standard deviations that the value of the normal random variable X is away from its mean

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Positive z-score: Above the mean

Negative z-score: Below the mean

All variables are continuous.

X can be positive or negative, just like Z

So the correct answer is:

(B) The standard normal variable Z counts the number of standard deviations that the value of the normal random variable X is away from its mean

4 0

3 years ago

Please answer the question attached below.

Thepotemich [5.8K]

Answer:

Please check the attached figure a for a complete visual.

Step-by-step explanation:

Considering the triangle ΔABC with vertices

A(-2, 0)
B(-2, 4)
C(0, 0)

When a figure is multiplied by a scale factor greater than 1, the figure is enlarged.

As the center of enlargement is (4, 4).

So, Draw a straight line from vertex A to the point (4, 4). Count how many units it needed in two dimensions to reach the center of enlargement (4, 4).

In case of vertex A, it was 6 units right and 4 units up. So, multiply them with 1.5 and locate the resulting position as A' which is the image of A after the scale factor of 1.5 using the center of enlargement as (4, 4).

So, when we multiply '6 units right' with 1.5, it becomes 9 units. So, move 9 units right from the center of enlargement (4, 4).

Similarly, when we multiply '4 units up' with 1.5, it becomes 6 units. So, move 6 units up from the center of enlargement (4, 4).

So, new the position of A' is shown in figure a.

Similarly, the vertex B and C are enlarged and the positions of B' and C' are shown in figure a.

The complete enlargement of triangle ΔABC is done as ΔA'B'C'. Please check the attached figure a for a complete visual.

Keywords: enlargement, scale factor, transformation

Learn more about transformation from brainly.com/question/9930004

#learnwithBrainly

7 0

3 years ago

How do you do this problem?

Sauron [17]

Answer:

Step-by-step explanation:

Part A

If it is compounded quarterly, the interest of 1.5 must be cut into a quarter of its present size. 1.5 //4 = 0.375 % per quarter.

In addition, the number of times that payment will be received is

4 quarters * 5 years = 20 quarters.

i = principle (1 + 0.375/100) ^20

i = principle (1 + 0.00375)^20

The principle = 4000 dollars.

i = 4000 * (1.00375)^20

i = 4000 * 1.07773

i = 4310.93

So she's tied up 4000 dollars to make 300 dollars.

Part B

I can't really give you an answer to this because I don't know if the 7% is compounded and over what period of time if it is, or if they mean 7% annually. There's a lot of variation in this question. Most people don't take money out of the market, so if it compounded, the formula would be

New Principle = starting amount (1.07)^4

New Principle = 4000 * 1.07^4

New Principle = 5243.18 so she would make about 4 times as much as the 300 she makes if she puts the money in a bond.

=============

If the interest is simple interest

Gain would be 0.07 * 4000 = 280 dollars.

Over four years = 4*280 = 1120 dollars.

You are going to have to ask your teacher what is intended by this question.

6 0

4 years ago

33% 1/3 5/3 .6 which number doesn’t belong? PLEASE HELPPP

OlgaM077 [116]

Answer:

5/3 does'nt belong.

Step-by-step explanation:

think about it.

33% = 1/3 = .6666666 they are all the same. 5/3 doesnt belong

3 0

4 years ago

Describe the system 6x-2y=10 and 9x-3y=8 as consistent and independent, consistent and dependent, or inconsistent.

Semmy [17]

Consistient means they have countable number of solutions (example, a point, not a line since lines are infinite)

inconsitient means they have no solutions (no points of intersection)

dependent means that they have infinite solutions (most likely becasue they are the same equaiton)

6x-2y=10
9x-3y=9
divide first equation by 2

3x-y=5

multipliy by -3
-9x+3y=15
add to second equation

-9x+3y=15
 9x-3y=8 +
0x+0y=23

0=23
fales

therfor it is inconsistient

8 0

4 years ago