Urgent please!!! I really don’t understand it, tysm to anyone who can answer thissss :))))
(53 points)

Urgent Please!!! I Really Dont Understand It, Tysm To Anyone Who Can Answer Thissss :)))) (53 Points)

Answers

Answer 1

Answer:

(ax + by + cz)/(a + b + c)

Step-by-step explanation:

Average = Sum / Number

In terms of the scores we calculate the sum as:

ax + by + cz

The number is the sum of the frequencies:

a + b + c

Mean average score is:

(ax + by + cz)/(a + b + c)

Related Questions

5-2(3 - x) = 4x + 10

Answers

Answer:

False

Step-by-step explanation:

5-2(3-x) =

3(3-x) = (not sure about this step)

9-x, this answer does not equal 4x + 10

5 - 2(3x) = 4x + 10
5 - 6x = 4x + 10
-4x. 4x
——————————-
5 - 2x = 10
-5. -5
————————
-2x = 5
—- —-
-2. -2
——————-
x= -2.5

will make as brainliest

Answers

x= 8.629
you would start with the angle 52°.
Since we have 6.8 and x as our sides we will look back at SOH CAH TOA. X is our hypotenuse length and 6.8 is opposite of 52° therefore it would would be SOH (or sin).
Sin(52)=6.8/x
multiply both sides by x
x•sin(52)=6.8
divide both sides by sin(52)
make sure your calculator is in degree mode and x should equal 8.629

Find x
25
7
х
I need help

Answers

Answer:

24 = x

Step-by-step explanation:

You use Pythagorean theorem. Since the normal equation is [tex]a^{2} + b^{2} =c^{2}[/tex], you already have the [tex]c^{2}[/tex] and another side which can be [tex]a^{2}[/tex] or [tex]b^{2}[/tex].

Because you have the hypotenuse and a side , your equation looks like this now: [tex]7^{2} +b^{2} = 25^{2}[/tex]

and when you solve for be you just subtract [tex]25^{2} -7^{2}[/tex] to get 24.

which best describes two figures that are similar?​

Answers

Answer:

B

Step-by-step explanation:

Four biased coins, A, B, C and D are thrown.
The probability that each coin will land on Heads is shown in the table.
Coin Probability a) (i) Which coin is least likely to land on Heads?
А
0.66
(1)
0.066
(ii) Which coin is most likely to land on Heads?
С
(1)
60%
b) What is the probability that D will land on Tails?
(1)
B
D
Coin B is going to be thrown 4000 times.
c) Work out an estimate for the number of times
coin B will land on Heads.
(2)
Total marks: 5

Answers

Answer:

Please check explanations for answer

Step-by-step explanation:

Firstly, we need all the probability in the same decimal form

P(A) = 0.66

P(B) = 0.067

P(C) = 2/3 = 0.67

P(D) = 60/100 = 0.6

a) The least likely is the smallest value of decimal

This is 0.067 which is for coin B

most likely is the highest probability; this is C which is 2/3

b. Probability that D will land on tail is 1 - probability that it lands on head

= 1 - 0.6 = 0.4

c. Mathematically that is the product of the probability and the number of times it was thrown

That will be;

0.066 * 4000

= 264 times

#3 Find angles 1, 2 22 h A) 90, 68 B) 68,90 C) 90, 90 D) 68, 68​

Answers

Answer:

a

Step-by-step explanation:

The answer to your question is A

HELPPP PLZ :(( I WILL MARK BRAINLIEST PLZZZ

Answers

Answer:

y = -3/2x + 2

The line starts on (0,2) and then it run 3 spaces down and 2 spaces to the right. Hope this helps, thank you !!

What is the sum of (4x2+5x – 12) + (7x2 – 6x + 7)?

Answers

The sum of (4x2+5x-12) + (7x2-6x+7)= -x+17

Algebra edg plz help!

Answers

Answer:

12

Step-by-step explanation:

Least common multiple of the numbers 2, 3, and 4 is 12

Answer:

3

Step-by-step explanation:

For them to at least be a whole number, it’s 3

Using the slope formula, find the slope of the line through the points (0,0) and (4,16)

Answers

The slope of the line is 4/1

Help will mark Brainliest

Answers

Answer:

To find the slope, use the formula rise/run or change in y/change in x

In this case, the slope is 5

To find y-intercept, substitue  values for x and y

Step-by-step explanation:

-3 = 5(2) + b

-3 = 10 + b

-10    -10  

-13 = b

Therefore, b is -13

So here's how the equation looks in slope-intercept form

y = 5x + -13

PLSS HELP the length of a rectangle is 3 meters greater than 2 times the width the perimeter of a rectangle is 30 m what is the length of the rectangle​

Answers

Answer:

Width: 4 meters. Length: 11 meters

Step-by-step explanation:

If you do it correctly, the length should be 3 more greater than 4*2. 4*2= 8 +3= 11. Your perimeter= 30 meters. 11+11 accounting for both long sides of the rectangle= 22. Accounting for both sides of the width, so 4*2=8 + our 22= 30 meters. Yw.

The length of the rectangle​ width 4 meters and length 11 meters.

If you do it correctly,

The length should be 3 more greater than

What is the perimeter of a rectangle?

P=2(l+w)

L= Length

W = Width

4*2. 4*2= 8 +3= 11.

Your perimeter= 30 meters.

11+11 accounting for both long sides of the rectangle= 22.

Accounting for both sides of the width,

So 4*2=8 + our 22= 30 meters.

Therefore we get the length of a rectangle is  11 meters.

To learn more about the perimeter visit:

https://brainly.com/question/19819849

Angles 1 and 2 are supplementary.
• The measure of angle 1 is (2x - 3) ◦
• The measure of angle 2 is (-5x + 423) ◦


What is the measure of angle 2?

Answers

Answer:

1 = 157°

2 = 23°

Step-by-step explanation:

because the angles are supplementary, their angles will add up to 180°set up the equation (2x-3)+(-5x+423)=180combine like terms to get -3x+420=180subtract 420 from 180 to get -3x=-240divide by three and get x=80now plug in 80 for x in both equations

PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!!! <3

Answers

Answer: The numbers go from left to right on the table in this order: 0, 3, 4, 3, 0, -5.

To do the problem, you put the x - value in place of where the x is in the equation above (y = 4 - x^2) and then you put what y equals in the box after you finish.

Good luck, hope this helped!!

10 + (2 x 3)2 ÷ 4 × (3 x 1/2)?

Answers

Answer:

14.5

Step-by-step explanation:

10 + (2 x 3)2 ÷ 4 × (3 x 1/2)

10 + (6)2 / 4 * (1.5)

10 + 12 / 4 * 1.5

10 + 3 * 1.5

10 + 4.5

14.5

Answer:

20.5

Step-by-step explanation:

10 + 12 ÷ 4 x 7/2

10 + 3 x 7/2

10 + 21/2

10 + 10.5

20.5

100 POINTS PLEASE HELP ASAP!!!!!!!!!!!

Answers

Answer:

its the first one

Step-by-step explanation:

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yall like that ;)?

Which expression is equivalent to 2 + 3(x - 6)?
A. 5x 30
B. Sx 6
C. 2+ 3x 18
D. 2+ 3x 6

Answers

Answer:

C)  2 + 3 x - 18

Step-by-step explanation:

Explanation:-

Given expression  2+ 3(x-6)

                 ⇒  2 + 3 x - 18

               ⇒    3 x - 16

Answer:

Step-by-step explanation:

D

i’ll mark brainliest

Answers

18 because big maths
The awnser yo your question is 18

Bill bought a $300 watch which was on sale for $280. What was the percent discount?

Answers

I am a little confused on what you meant, and I'm not sure if its correct. I think he saved $20

What is the answer???

Answers

Reflection because if you reflected the same side it would be the exact shape hope this helps brainlist would be much appreciated:)

If angle 10 and angle 15 are congruent, which lines are parallel

Answers

Answer:

Line a is parallel with line b

Step-by-step explanation:

The answer is line A and b.

You have 40 minutes to exercise at the gym, and you want to burn 300 calories total using both
machines. The amount of calories burned on each machine is shown in the picture below. How
much time should you spend on each machine?


Machine a burns 8 calories per minute machine b burns 6 calories per minute.

Answers

a and b are the minutes spent on machine A and machine B, respectively.

a+b = 40
b = 40-a

8a + 6b = 300
8a + 6(40-a) = 300
8a + 240 - 6a = 300
2a = 60
a = 30
b = 40-a = 10

30 minutes on machine A and 10 minutes on machine B

two angles of a triangle measure 67 degrees and 90 degrees what is the measure of the third angle?

Answers

23

.

.

.

.

.

.

.

I hope it's helpful for you dude

Answer:23

Step-by-step explanation:

1/3 + (3x+12) = 6x -11

Answers

Answer:

x = 70/9

Step-by-step explanation:

Answer:

70/9

Step-by-step explanation:

please help!!!!! 15 points!!!!

Answers

Answer:

the answer is B

Step-by-step explanation: hope this helps :)

Nimer was driving to a hotel. He looked at his sat nav at 13:30 and saw the following distance to destination = 65miles nimer arrived at the hotel at 14:48 work out the average speed of the car in mph, from 13:30 to 14:48

Answers

Answer:Average speed =50 miles per hour or 50mph

Step-by-step explanation:

We know that  Speed is given as= Distance/ Time

Nimer's  distance to his destination = 65 miles

Time taken to his destination = 13:30 to  14:48

which is = 14:48--13:30 = 1:18 mins

Converting  1hr 18mins  to hours = 1 hour + 18/ 60 = 1 + 0.3 = 1.3 hours

Average speed =Distance/ Time

Average speed = 65miles/ 1.3hr = 50 miles per hour

a sphere has a volume of 905cm. what is the radius of the sphere rounded to the nearest whole number ?

Answers

Answer:

r = 6

Step-by-step explanation:

The value of radius of the sphere rounded to the nearest whole number is,

⇒ r = 6 cm

We have to given that,

Volume of a sphere = 905 cm

Since, We know that,

Volume of sphere = 4/3 (πr³)

Where, 'r' is radius of sphere.

Now, Substitute the given value, we get;

⇒ 905 = 4/3 (πr³)

⇒ 905 × 3 = 4 × 3.14 × r³

⇒ 2,715 = 12.56 × r³

⇒ r³ = 216.16

⇒ r = ∛216.16

⇒ r = 6 cm

Thus, The value of radius of the sphere rounded to the nearest whole number is,

⇒ r = 6 cm

To learn more about the volume visit:

brainly.com/question/24372707

#SPJ2

13 = -4x +9 solve equation.

Answers

Answer:

-1x or -x

Step-by-step explanation:

4 divided by -4

A rectangle has a width of 2x and a length of 2x+5, what is the area?

Answers

Answer:

what ever the next person says

Step-by-step explanation:

it cost $245 for 10 people to attend a concert how muchdoes it cost for a group of 8 people

Answers

Answer: It will cost $196

245 ÷ 10 = $24.5

$24.5 x 8 = $196

Hope this helps, have a wonderful day!

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