All categories

3 years ago

What are the coordinates of point Q?

Mathematics

1 answer:

Lady bird [3.3K]3 years ago

5 0

Answer:

Q (-4, -2); 2 units; Q' will be above the x-axis; 2 unites; no; yes, the y coordinates are multiplied by -1; Q' (-4, 2); R' (-2, 2), S' (1, 5), T' (-2, 5);

Step-by-step explanation:

even after a reflection over the x-axis, each points distance from the x-axis will stay the same

the x-coordinates don't change because the distance from the y-axis stays the same

the picture below shows points of Q'R'S'T', just connect the vertices

You might be interested in

Suppose you save $10 one month and that each month thereafter you save 50 cents more than the preceding month. How much will you

Arada [10]

Answer:

$8694.00

Step-by-step explanation:

The series of savings amounts will have 12×14 = 168 terms. The last amount added to the savings account will be ...

10 + 0.50(168 -1) = 93.50

So, the average amount added is the average of the first and last amounts:

(10 + 93.50)/2 = 51.75

That multiplied by the number of terms in the series, 168, will give the total amount added to the savings account:

168 × $51.75 = $8694.00

By the end of 14 years, you have saved $8694.00.

6 0

3 years ago

A man buys a racehorse for $20,000 and enters it in two races. He plans to sell the horse afterward, hoping to make a profit. If

victus00 [196]

Answer:

The expected profit is $10,600.

Step-by-step explanation:

The expected profit can be calculated as the sum of the possible outcomes weighted by their probability of occurrence.

In this case, there are four possible outcomes:

1) The horse win both races. The value of the horse will be $100k-$20k=$80k.

The probability of this outcome is:

$P(ww)=P(w1)*P(w2)=0.2*0.3=0.06$

2) The horse win the first race, but lose the second one. The value will be $50k-$20k=$30k.

The probability is:

$P(wl)=P(w1)*(1-P(w2))=0.2*(1-0.3)=0.2*0.7=0.14$

3) The horse lose the first race, but win the second one. The value will be $50k-$20k=$30k.

The probability is:

$P(lw)=(1-P(w1))*P(w2)=(1-0.2)*0.3=0.8*0.3=0.24$

4) The horse lose both races. The value will be $10k-$20k=-$10k.

The probability is:

$P(lw)=(1-P(w1))*(1-P(w2))=(1-0.2)*(1-0.3)=0.8*0.7=0.56$

Then, the expected profit can be calculated as:

$E(x)=\sum\limits^4_{i=1} {p_ix_i}\\\\E(x)=0.06*80,000+0.14*30,000+0.24*30,000+0.56*(-10,000)\\\\E(x)=4,800+4.200+7,200-5,600=10,600$

6 0

3 years ago

Find the cardinal number of the given set.<br><br><br> A = {{3, 5, 7, ... 25}}

Allisa [31]

Answer:

Step-by-step explanation:

The cardinal number of a set is the number of element in the set. Given the set A = {{3, 5, 7, ... 25}}, you can see that the elements of the set are odd numbers from 3 to 25. Writing out the full set;

A = {{3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25}}

Counting the total number of element in the set, you will see that there are only 12 elements in the set. Hence the cardinal number of the set is 12 i.e n(A) = 12

7 0

3 years ago

Pls help with this math question

Korvikt [17]

Answer:

I would say A

Step-by-step explanation:

if wrong sorry the graph kinda blurry

3 0

2 years ago

Read 2 more answers

A recent survey found that 76 % of all adults over 50 wear glasses for driving. in a random sample of 100 adults over 50, what

Mandarinka [93]

Mean = np = 60(0.7) = 42

Standard deviation = sqrt(npq) = sqrt(60(0.7)(0.3)) = 3.55

7 0

3 years ago