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Naily [24]
3 years ago
7

If x:y = 2:5, find the value of (-x+3y):(2x+y)

Mathematics
1 answer:
Anit [1.1K]3 years ago
6 0

Answer:

let x=2t and y=5t

-x+3y = -2t+15t = 13t

2x+y = 4t+5t = 9t

So the ratio is 13t : 9t

So, the ratio is 13 : 9

You might be interested in
-)) t multiplied by 52 is the same as 349​
yawa3891 [41]

Hey there,

The word problem is as follows:

  • t multiplied by 52 is the same as 349

In numbers this would mean t x 52 = 349. Now to solve for t we would do the opposite of multiplication which is is division.

So...

  • 349 ÷ 52 = t and t = 6 \frac{37}{349}

The answer would be t is equal to 6 and \frac{37}{349} or 6.712

Hope I helped,

Amna

5 0
3 years ago
Solve the inequality. -2(2x + 2) ≥ −4x − 12
777dan777 [17]

Step-by-step explanation:

-

- 4x  - 4 \geqslant  - 4x - 12 \\  - 4x + 4x \geqslant  - 12 + 4 \\ 0 \geqslant  - 8

8 0
2 years ago
What is -2¾ as a decimal​
gtnhenbr [62]

Answer:

-2\frac{3}{4} is equal -2.75 as a decimal

Step-by-step explanation:

to take -2\frac{3}{4} to decimal, we take -2 and put point behind it. by doing so, \frac{3}{4}becomes 300/4=75

Then we have -2.75

5 0
3 years ago
Read 2 more answers
Frances added two numbers and the resulting sum was an irrational number. If the first number was 54
faust18 [17]

Answer:SOMEONE PLZZZ ANSWER THIS I NEED THE ANSWER TO

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Step-by-step explanation:

5 0
3 years ago
The product of 3 consecutive even integers is equal to the cube of the first plus the square of the second plus twice the square
algol [13]

Answer:

6, 8 and 10  and  -2, 0, 2

There are two roots x = -2 and 6,    

but the since I don't believe 0 is an even number the answer is 6, 8 and 10

I was incorrect according to G0ggle zero is an even number so another answer is  -2, 0, 2

Step-by-step explanation:

read the question and convert the English to mathematics

x, y and z    even consecutive number

y = x+2

z = y+2 = x+4

and

xyz = x³ + y² + 2z²                                   substitiute x terms  in for y and z

x(x+2)(x+4)  = x³ + (x+2)² + 2(x+4)²           solve for x by graphing on DEMOS

                                                                 x = -2, 6  solved algebraically below

x = -2   y=0   z=2

x = 6    y=8   z=10

Checked both answers

xyz = x³ + y² + 2z²

-2(0)2 = -8 + 0 + 8                  when x = -2

   0   =  0

and

6(8)(10)  =  6³ + 8² +2(10)²      when x = 6

   480   =  216+64+200

             =  480

x(x+2)(x+4)  = x³ + (x+2)² + 2(x+4)²                           solved algebraically

(x²+2x)(x+4)   = x³ + x² +4x +4 + 2x² + 16x + 32

x³ + 6x² + 8x = x³ + x² +4x +4 + 2x² + 16x + 32

x³ + 6x² + 8x = x³ + 3x² + 20x + 36

      3x² - 12x - 36 = 0         factor out the 3

      3[x² - 4x - 12] = 0

       3(x+2)(x-6) = 0     x = -2 and -12

6 0
2 years ago
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