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Diano4ka-milaya [45]
4 years ago
10

BRAINLIEST !!

Mathematics
2 answers:
zepelin [54]4 years ago
7 0

Answer:

1. 389/39

2. 45/2

Step-by-step explanation:

1.

24/35 = (3x+7)/(6x-6)

144x - 144 = 105x + 245

39x = 389

x = 389/39

2.

9/(x+9) = 6/(15+6)

9/(x+9) = 6/21 = 2/7

63 = 2x + 18

2x = 45

x = 45/2

dmitriy555 [2]4 years ago
5 0

Answer:

The answer to your question is below

Step-by-step explanation:

Use proportions to solve these problems

1)

             (6x - 6)/35 = (3x + 7)/24

Solve for x

             24(6x - 6) = 35(3x + 7)

Expand

             144x - 144 = 105x + 245

             144x - 105x = 144 + 245

                       39x = 389

                           x = 389/39

                           x = 9.97

2)             9 + x = 6 + 15

Solve for x

                     x = 21 - 9

                   x = 12  

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On a recent day, one U.S dollar was worth 0.64 euros. If you were to exchange 126 euros on that day, how many U.S. dollars would
Dimas [21]

Answer: $196.88

Step-by-step explanation:

It is given that the rate of 1 US dollar = 0.64 euros.

Then, 1 euro = \frac{1}{0.64}\text{ dollars}

⇒ 1 euro =1.5625 dollars

Now, 126 euros = 126\times1.5625

\Rightarrow126\text{euros} =196.875\approx196.88\text{ dollars}

Hence, If we exchange 126 euros on that day, then we would receive 196.88 dollars.

8 0
4 years ago
Sketch the graph of each linear inequalities <br> y&gt;-1
REY [17]
I would try using Photomath or Desmos both great graphing apps!
5 0
3 years ago
I need help please due in a hour
Montano1993 [528]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
4 The perimeter of a regular pentagon is represented by the expression 35d - 25.
Komok [63]

The equivalent expression to Daryl's expression is -5 + 7d ⇒ d

Step-by-step explanation:

In a regular polygon of n-side

  • All sides are equal in lengths
  • All angles are equal in measures
  • Its perimeter is n × the length of one side

∵ The polygon is a pentagon

∴ n = 5

∵ The pentagon is regular

∴ The lengths of its 5 sides are equal

∵ Its perimeter = 5 × length of one side

∵ Its perimeter = 35d - 25

- Equate the two sides of the perimeter

∴ 5 × length of one side = 35d - 25

- Divide both sides by 5

∵ 35d ÷ 5 = 7d and 25 ÷ 5 = 5

∴ The length of one side = 7d - 5

Daryl's expression is 7d - 5

Now lets check the answers

a. 35d - 25 ⇒ No

b. 7d - 15 ⇒ No

c. 5(35 - 25) ⇒ No

d. -5 + 7d ⇒ Yes

e. (35d - 25) ⇒ No

The equivalent expression to Daryl's expression is -5 + 7d

Learn more:

You can learn more about polygons in brainly.com/question/6281564

#LearnwithBrainly

3 0
3 years ago
Alex has been mowing lawns to save money for a concert. Alex will need to work for at least five hours to save enough money, but
vekshin1

Answer:

15

Step-by-step explanation:

5 0
3 years ago
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