MATHEMATICS HIGH SCHOOL

In a math class of 40 students, there are 21 female students. Which of the following does NOT represent a ratio of the number of girls in the classroom to the total number of students?19/40
0.53
21/40
53%

Answers

Answer 1
Answer:

Answer:

Everything except 21/40. That is your ratio. The denominator always

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Orlando invested $16,000 in an eight-year CD bearing 6.5% interest, but needed to withdraw $3,500 after five years. If the CD’s penalty for early withdrawal was one year’s worth of interest on the amount withdrawn, when the CD reached maturity, how much less money did Orlando earn total than if he had not made his early withdrawal?a.
$227.50
b.
$682.50
c.
$910.00
d.
$455.00

Answers

B is the correct answer. Firstly, you have to work out the amount of interest earned per year by multiplying the sum invested ($16,000) by the interest rate (6.5%, or 0.065). Then multiply the result by eight to find out how much money Orlando would get when the CD reaches maturity if he doesn't withdraw any money. To calculate interest when money is withdrawn, multiply the annual interest by five, to work out how much interest Orlando earns in the first five years. Then work out the interest on the reduced investment ($16,000 - $3,500) in the same way and multiply by three to calculate the remaining three years' interest. Add the total interest for three years to the total interest to five years, which will tell you how much interest Orlando recieves when he makes the withdrawal. Finally, you can now take this away from the interest he would have made if he had not made a withdrawal, and this will tell you the difference.

The real correct answer is C. $190.00

Can someone please help me with the problems that aren't done please ASAP

Answers

I believe #8 would be 0.6, and #10 would be 65%.
Number 2. You first need to conver those two fractions to decimals to so 3/5 is 0.60 and 1/4 is 0.25 so this is the order: 1/4 , 0.4 , 0.55 ,3/5

Patricia roller skates 0.50 kilometers, straight north to the library. Then she walks 0.25 kilometers to her friend's house, which is straight north of the library. What is Patricia's displacement?

Answers

The answer is 0.75 kilometers.

Displacement is the shortest distance between the initial and the final point. But, Patricia roller skates in the straight line, so her displacement is the distance between the initial and the final point:

0.50 km + 0.25 km = 0.75 km.

Therefore, Patricia's displacement is 0.75 kilometers.

The answer is: 0.75 km, north

a family has five children The probability of having a gil is 1/2 What is the probability of having exactly 2 girls out of five children

Answers

p(no girls in five births) = p(five boys) = (1/2)^5 = 1/32 = 0.0313

What set of reflections would carry triangle ABC onto itself? triangle ABC on the coordinate plane with point A at 1, 2, point B at 2, 4, and point C at 3, 0.

Answers

Your answer is Y-axis, X-axis, Y-axis, X-axis.
The A y-axis , B y-axis and C would also be reflected over the Y-axis. When you think about the coordinates on a graph, and with that also being said there all positive.

Answer:

y-axis,  x-axis , y-axis and x-axis

Step-by-step explanation:

Given : In triangle ABC

The coordinates are

A = (1,2) , B=(2,4) and C =(3,0)

Rule of reflection:

*Reflecting a point (x, y) across the y-axis will map it to (-x, y).

*Reflecting a point (x, y) across the x-axis will map it to (x, -y).

If you do a reflection on coordinate point A = (1,2)  across y-axis we get (-1 ,2)

then, reflecting a point (-1 , 2) across x -axis we get, (-1, -2)

then, reflecting a point (-1 , -2) across y-axis we get, (1 , -2)

and

reflecting a point (1, -2) across x- axis we get the result same i.e, A =(1,2)

Similarly,

For B = (2,4) across y-axis \rightarrow (-2, 4) across x- axis \rightarrow  (-2, -4) across y -axis \rightarrow (2 , -4) across x axis \rightarrow  ( 2, 4) = B

for C = (3, 0) across y-axis \rightarrow (-3, 0) across x- axis \rightarrow  (-3, 0) across y -axis \rightarrow (3 , 0) across x axis \rightarrow  (3, 0) = C

Therefore, the set of reflection would carry triangle ABC onto itself is:

y-axis,  x-axis , y-axis and x-axis

Choose all the fractions that are in simplest form.4/26
8/21
6/19
9/10
10/22

Answers

4/26 can be simplified by 2. So, this is not the answer.
8/21 cannot be simplified. So, it is one of the answers.
6/19 cannot be simplified. So, it is one of the answers.
9/10 cannot be simplified. So, it is one of the answers.
10/22 can be simplified by 2. So, this is not the answer.

So, the fractions in simplest forms are 8/21, 6/19, and 9/10.
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