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Ad libitum [116K]
2 years ago
15

URGENT PLEASE HELP

Mathematics
1 answer:
Leto [7]2 years ago
4 0

Answer:

what was the answer?

Step-by-step explanation:

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How do I solve these?
makkiz [27]

1) The number is 12.

2) There are 7 passengers in a row.

3) Carol, Xavier and Keela drank 580, 1160 and 1260 mL of water, respectively.

<h3>How to resolve word problems involving linear equations</h3>

In this question we find word problems involving linear equations, in each case we need to understand the statement, derive mathematical equations and looking for corresponding solutions by algebraic means. Now we proceed to solve for each case:

Case 1

A variable is found herein and we need to resolve on this linear equation: (x - A number)

(x + 8) / 4 = 1 + (1 / 3) · x

(1 / 4) · x + 2 = 1 + (1 / 3) · x

1 = (1 / 12) · x

x = 12

The number is 12.

Case 2

A variable is found herein and we need to resolve on this linear equation: (x - Number of passengers per row)

30 · x + 12 = 222

30 · x = 210

x = 7

There are 7 passengers in a row.

Case 3

Three variables are found herein and we need to resolve on these linear equations: (x - Water consumed by Carol, y - Water consumed by Xavier, z - Water consumed by Keela)

z = 2 · x                        (1)

y = z + 100                   (2)

x + y + z = 3000           (3)

Finally, we find the solution of this system:

x + (z + 100) + z = 3000

x + 2 · z = 2900

x + 4 · x = 2900

5 · x = 2900

x = 580 mL

z = 1160 mL

y = 1260 mL

Carol, Xavier and Keela drank 580, 1160 and 1260 mL of water, respectively.

To learn more on systems of linear equations: brainly.com/question/21292369

#SPJ1

3 0
1 year ago
Write the fraction as an equivalent fraction with the given denominator 7/4 = _/20
zzz [600]

Answer:

35/20

Step-by-step explanation:

20 divided by 4 = 5

so our multiple is 5

5 x 4 = 20

so we have to do the same to the numerator

5 x 7 = 35

Simplified= 1 3/5

4 0
2 years ago
What percent of 143 is 95.1?
Aloiza [94]

Answer:

66.5%

Step-by-step explanation:

95.1/143*100=66.5%

4 0
2 years ago
Read 2 more answers
What is the average of the sixth even number, fifth and eighth odd number after 200?
ohaa [14]

<em>Answer:</em>

<em>212 is the answer !</em>

<em>Step-by-step explanation:</em>

<em>Firstly, We'll have to write all the numbers till 220 after 200 that is :</em>

<em>201  , 202  , 203 ,  204 , 205 , 206  , 207 , 208 , 209 , 210 , 211  ,212 , 213 , 214 , 215 , 216 , 217 , 218 , 219 , 220 . </em>

<em />

<em>Here we now know the the 6th even number is</em><em> 212.</em>

<em>And the 5th odd number is </em><em>209.</em>

<em>And the 8th odd number is</em><em> 215.</em>

<em />

<em>By using the formula we can find the average that is :</em>

<em>212+209+215/3  </em><em>= 636/3  = 212 </em>

<em />

<em>∴ Your answer is 212 !</em>

3 0
3 years ago
Read 2 more answers
He product of ten and a number is greater than the difference of four times the number and two.
Debora [2.8K]

Answer:

You can use 1 as a solution.

Step-by-step explanation:

10 + 1 = 11

1 * 4 = 4

4 - 2 = 2

11 > 2

4 0
3 years ago
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