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3 years ago

Help please? I’m not too sure what to do?

Mathematics

1 answer:

mamaluj [8]3 years ago

6 0

Answer:

Step-by-step explanation:

Average needed to get grade C = 70

Average = Total Amount / No of Items.

No of items = 4

therefore Total needed = 70 x 4 = 280

current total score = 66.75 + 66 + 72.25 = 205

the fourth test minimum score = 280 - 205 = 75

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Mrs. Myles gave the same test to both her first and third period class. In first period, the median was 75 and the range was 30.

Dennis_Churaev [7]

Answer:

The range is the difference between the biggest and smaller values of a set. The median is the middle value of a set. So we cannot say were the lowest score was found, comparing the median and ranges, because it could be that some repeated value very low or high is biasing the median, we could do it with the mean perhaps. So the proposal is false.

7 0

3 years ago

Read 2 more answers

Examine the quadratic equation LaTeX: 9x^2+12x+4=0

Tamiku [17]

I hope the answer above is correct because I need this answer too. Was it ?

Help !

4 0

3 years ago

The combination of a lock uses numbers 1-10

SVETLANKA909090 [29]

Answer:If the digit of 0 is allowed, then:

1/(10*9*8)= 1/720

If it is not permitted, then:

1/(9*8*7)= 1/504

I hope this helps you!

Step-by-step explanation:

5 0

3 years ago

A lottery game offers a prize of $ 200,000 at the end of thirty years. If the interest rate is 6 6%, the present value of this

Wewaii [24]

Answer:

$34,822.03

Step-by-step explanation:

Future value after 30 years (FV) = $200,000

Time (t) = 30 years

interest rate (r) = 6% =0.06

The equation for obtaining the present value given the future value is:

$PV = \frac{FV}{(1+r)^n}$

Applying the data provided:

$PV = \frac{\$200,000}{(1+0.06)^{30}}\\PV=\$34,822.03$

The present value of the lottery prize amount is $34,822.03.

5 0

3 years ago

What is the distance rounded to the nearest tenth between the points(-5, 3) and (1, -1)?

kakasveta [241]

7.2 units is the distance between the two points (-5,3) and (1, -1).

The formula used for determining the distance between two points is shown below. In case this equation is used for finding the distance between the origin and a point, the value of x1 and y1 would just be equal to zero.

distance = $\sqrt{(x2-x1)^{2}+(y2-y1)^{2} }$