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murzikaleks [220]
3 years ago
13

The sum of n A.M.'s between two numbers is 20. If the last mean is double of the first and one number is three times the other,

then find the number
​
Mathematics
1 answer:
tester [92]3 years ago
4 0

Answer:  

120

Step-by-step explanation: because you add 20 twice and thts 40 and 40 times 3 is 120

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B. Find the value of X. Show your work, I’m not sure how to do this
Eddi Din [679]

Answer:

63°

Step-by-step explanation:

The sum of all interior angles of a triangle = 180°

Therefore:

x + 96° + 21° = 180°

x + 117 = 180

Subtract 117 from each side

x = 180 - 117

x = 63°

5 0
2 years ago
HDTV screens usually have a width-to -height ratio of 16:9. Which screen dimensions are in the same proportion?
love history [14]

Answer:

4 feet by 3 feet

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  

Please have a look at the attached photo.  

My answer:

width-to -height ratio of 16:9

Let analyse all possible answers:

  • 4 feet by 3 feet

16 divided by 4 is the same as 9 divided by 3 => it is true

  • 28 inches by 21 inches

16 divided by 28 is different as 9 divided by 21 => it is wrong

  • 48 centimeters by 27 centimeters

16 divided by 48 is different as 9 divided by 27 => it is wrong

  • 26 inches by 19 inches

16 divided by 26 is different as 9 divided by 219=> it is wrong

We choose A.

Hope it will find you well.

7 0
3 years ago
Is the answer C ; y= -3x-1
Sonja [21]

Answer:

I believe you are correct

Hope This Helps!      Have A Nice Day!!

8 0
3 years ago
Read 2 more answers
∣−7∣ PLEASE HELP I HAVE 2 MINS TO GO
lapo4ka [179]

Answer:

The absolute value is 7.

Step-by-step explanation:

Because when a number has two lines between it you always make it positive.

3 0
2 years ago
Read 2 more answers
Six values on the number line above are marked with letters. Which letters represent integers when the value on the number line
s344n2d4d5 [400]

Answer:

Here is your answer C

Step-by-step explanation:

4 0
3 years ago
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