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avanturin [10]
2 years ago
10

Consider the following proportion:

Mathematics
2 answers:
lakkis [162]2 years ago
8 0

Answer:

x=9/4

Step-by-step explanation:

Assoli18 [71]2 years ago
7 0

Answer:

2x=84

÷2. ÷2

x=42

Step-by-step explanation:

You might be interested in
The sum of all three numbers is 12. The sum of twice the first number, 4 times the second number, and 5 times the third number i
DaniilM [7]

Answer:

The numbers are 7, 4 and 1

Step-by-step explanation:

Let the numbers =x, y, z.

The sum of all three numbers is 12, x+y+z=12--------i

The sum of twice the first number, 4 times the second number, and 5 times the third number is 35, 2x+4y+5z=35-------ii

The difference between 8 times the first number and the second number is 52, 8x-y=52---------iii

Now, from (i),z =1-x-y--------iv

substitute (iv) in (ii),

2x+4y+5(12-x-y)=35

2x+4y+60-5x-5y=35

collect like terms

-3x-y=-25

that is, 3x-y=25--------v

solving (iii) and (v) simultaneously (add iii and v), we have

11x=77

divide both sides by 11 to obtain x=7

Put x=7 in (v)

3(7)+y=25

21+y=25

implies y=25-21=4

put x=7 and y=4 in (iv)

z=12-7-4=1

Hence, the numbers are 7, 4 and 1.

4 0
3 years ago
Question 16 of 40
Sunny_sXe [5.5K]
The answer b your welcome so much
3 0
3 years ago
Two consecutive odd integers have a sum of -152. What are the two integers?
ZanzabumX [31]

Answer:

-75 and -77

Step-by-step explanation:

This can be wrote as n+n+2=-152. Combine like terms and subtract 2 from both sides to get 2n=-154. Divide by two to get n=-77 and then add two to get -75.

6 0
3 years ago
Please answer!!!!!!!!!!!! Noww!! in under 2 minutes. Carmen earns 45 dollars each week working part-time at a bookstore. She ear
BabaBlast [244]
A=45+B
A= 45+22
A= 67
7 0
3 years ago
Solve using elimination.<br> 3x − 5y = 18 <br> -10x + 5y = 10
olga55 [171]

3x - 5y = 18 over

-10x + 5y = 10

Add them because the 5y's have the right symbols for us to add

-7x = 28

Divide

x = -4

Now you can plug in -4 for x in one equation, I would use the first equation!

3(-4) - 5y = 18

-12 - 5y = 18

Add 12

-5y = 30

Divide

y = -6

Your solutions are going to be:

x = -4

y = -6

To check your work plug x and y into one equation:

3(-4) - 5(-6) = 18

-12 + 30 = 18

18 = 18

Since 18 does equal 18 you know that your solution's work!

5 0
3 years ago
Read 2 more answers
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