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s344n2d4d5 [400]
3 years ago
12

Please help and explain step by step , how to get the value :(​

Mathematics
2 answers:
jonny [76]3 years ago
8 0
First one is three i think
Whitepunk [10]3 years ago
3 0
Let us consider the values of x and y
So 3x-2y-5=17
=>3x-2y=22.......(1)

Putting it in the first eq.

3x-2y+9= 22+9=31(Ans)
(Because 3x-2y=22 in equation 1)


Now multiplying (1) by 3

(3x-2y)*3=(22*3)

9x-6y=22*3

9x-6y=66(Ans)

I hope it helps and you understand.
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Jacques and Aaron both started this year at 5.65 feet tall. Jacques has grown 0.2 feet since then. Aaron has grown twice that am
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It is 5.69 positively sure of it good luck on youre quiz if youre taking one!


7 0
3 years ago
If the area of the rectangle avove is 180 spuare inches, then x =
oksano4ka [1.4K]

Given the dimension of the length and area of the rectangle, the dimension of the breadth x is 9in.

Hence, option A is the correct answer.

This question is incomplete, the missing diagram is uploaded along this answer below.

<h3>What is the value of x?</h3>

Area of a rectangle is expressed as; A = l × b

Given that;

  • Length of the rectangle l = 20in
  • Breadth b = x
  • Area A = 180in²

A = l × b

180in² = 20in × x

x = 180in² / 20in

x = 9in

Given the dimension of the length and area of the rectangle, the dimension of the breadth x is 9in.

Hence, option A is the correct answer.

Learn more about area of rectangle here: brainly.com/question/12019874

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4 0
2 years ago
two trains depart the station in different directions. their paths are at a 90-degree angle from one another, as shown in the fo
myrzilka [38]

Answer:

8125t^2-11250t^2+5625 greater than or equal to > 100

Step-by-step explanation:

PLATO

5 0
3 years ago
A movie theater has a seating capacity of 197. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults.
yarga [219]

Answer: 74 children attended

86 students attended

37 adults attended

Step-by-step explanation:

Let x represent the number of children that attended.

Let y represent the number of students that attended.

Let z represent the number of adults that attended.

The movie theater has a seating capacity of 197. It means that

x + y + z = 197- - - - - - - - - - - - -1

The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults. If the total ticket sales was $ 1416, It means that

5x + 7y + 12z = 1416- - - - - - - - - - 2

There are half as many adults as there are children. It means that

It means that

z = x/2

x = 2z

Substituting x = 2z into equation 1 and equation 2, it becomes

2z + y + z = 197

y + 3z = 197- - - - - - - - - - - - -3

5 × 2z + 7y + 12z = 1416

10z + 7y + 12z = 1416

7y + 22z = 1416- - - - - - - - - - - 4

Multiplying equation 3 by 7 and equation 4 by 1, it becomes

7y + 21z = 1379

7y + 22z = 1416

Subtracting, it becomes

- z = - 37

z = 37

x = 2z = 2 × 37

x = 74

Substituting x = 74 and z = 37 into equation 1, it becomes

74 + y + 37 = 197

y = 197 - 74 - 37

y = 86

5 0
3 years ago
What is the proper way to check an algebraic solution?
vlabodo [156]
The correct way is to plug in the answer back into the equation and see if it results in the correct solution.
4 0
3 years ago
Read 2 more answers
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