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Firlakuza [10]
3 years ago
5

What is the missing term that makes these ratios equivalent?

Mathematics
2 answers:
sashaice [31]3 years ago
8 0
The answer is 63 because you have set up the proportion 1.5 over 3 = 31.5 over x and then you cross multiply 31.5 times 3 and you get 94.5 then you divide that by 1.5 and you get 63. 
Darina [25.2K]3 years ago
4 0
<span>Think of of the colon ( : ) as a fragment bar. that's all that's! So here is the project now: 2 / 5 = 4 / ? think of of the ( ? ) as a variable (so, replace it with "x" for now to make issues much less stressful). So... 2 / 5 = 4 / x Now you bypass multiply to create an equation which will enable you to remedy for x (or the ? mark). (word: the --- is the fraction bar, overlook with regard to the ..... they are used as fillers so the textual content textile will exhibit suitable). 2.......4 --- = --- 5.......x So, multiply 2 and x, placed that answer on the left edge of the equation (which ability = sign). Then, multiply 5 and four, then placed that on the best edge of the equation (back, which ability the = sign). So now... 2x = 20 Divide the two components by using 2, then you somewhat get x = 10 So, x = ( ? question mark) And the ratio is two:5 = 4:10


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!</span>
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The answer to your question is B
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3 years ago
Solve for x. show your work. 2x^2+8x=-10
malfutka [58]

Answer:

120

Step-by-step explanation:

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3 years ago
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What equation would help determine the cost of 4 markers if five markers are $6.55 and remember I am asking for the equation not
harkovskaia [24]

Answer:

4($6.55)/5

Step-by-step explanation:

If five markers cost $6.55

then equate or cross multiply inorder to get the cost of 4 markers.

4($6.55)/5

7 0
3 years ago
Find the sum of the first 20 terms of an arithmetic sequence with an 18th term of 8.1 and a common difference of 0.25.
il63 [147K]

The sum of the first 20 terms of an arithmetic sequence with the 18th term of 8.1 and a common difference of 0.25 is 124.5

Given,

18th term of an arithmetic sequence = 8.1

Common difference = d = 0.25.

<h3>What is an arithmetic sequence?</h3>

The sequence in which the difference between the consecutive term is constant.

The nth term is denoted by:

a_n = a + ( n - 1 ) d

The sum of an arithmetic sequence:

S_n = n/2 [ 2a + ( n - 1 ) d ]

Find the 18th term of the sequence.

18th term = 8.1

d = 0.25

8.1 = a + ( 18 - 1 ) 0.25

8.1 = a + 17 x 0.25

8.1 = a + 4.25

a = 8.1 - 4.25

a = 3.85

Find the sum of 20 terms.

S_20 = 20 / 2 [ 2 x 3.85 + ( 20 - 1 ) 0.25 ]

         = 10 [ 7.7 + 19 x 0.25 ]

         = 10 [ 7.7 + 4.75 ]

         = 10 x 12.45

         = 124.5

Thus the sum of the first 20 terms of an arithmetic sequence with the 18th term of 8.1 and a common difference of 0.25 is 124.5

Learn more about arithmetic sequence here:

brainly.com/question/25749583

#SPJ1

8 0
1 year ago
The sound of a jet engine of a skyhawk jetfighter is 70000 times louder than the sound of a lawnmower if the lawnmower has the l
Amanda [17]

Answer: 6,160,000 db

Step-by-step explanation:

The sound of a jet engine is 70,000 times louder than that of a lawn mower.

Since we know the sound of a lawnmower, we can multiply that by 70,000 to find the sound of a jet engine:

= Sound of lawnmower * 70,000

= 88 * 70,000

= 6,160,000 db

8 0
3 years ago
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