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Keith_Richards [23]
3 years ago
14

Sally Pays £25 for two tubes of paint a blue tube and a red tube. the blue tube cost £7 more than the red tube.

Mathematics
1 answer:
Lostsunrise [7]3 years ago
5 0
Let's say the price of the red tube is x, and the price of the blue tube is x + 7. Then the total cost 25 is the price of the red tube plus that of the blue tube, or x + x + 7.

2x+7=25  \\ 2x =18  \\ x=9

The red tube cost £9, and the blue tube cost <span>£16.</span>
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Solve for x. 9 4 13.5 x+4
Lady_Fox [76]

Answer:

x = 2

Step-by-step explanation:

The parallel lines divide the transversals into proportional segments, that is

\frac{x+4}{13.5} = \frac{4}{9} ( cross- multiply )

9(x + 4) = 54 ( divide both sides by 9 )

x + 4 = 6 ( subtract 4 from both sides )

x = 2

5 0
3 years ago
Change the fraction 5/2 to percent
kap26 [50]

[ Answer ]

\boxed{250 \ Percent}

[ Explanation ]

  • Change \frac{5}{2} To Percent

-------------------------------------

\frac{5}{2} Is The Same As 5 ÷ 2

  • Divide

5 ÷ 2 = 2.5

  • Convert Decimal To Percentage

2.5 · 100 = 250

  • Final Answer

250%

\boxed{[ \ Eclipsed \ ]}

4 0
3 years ago
Evaluate 1/3 divided by 1/2
svp [43]

Answer:

2/3

Step-by-step explanation:

1/3 x 2/1 = 2/3

3 0
3 years ago
Read 2 more answers
If 3 times a square of an integer is added to 1 times the integer, the result is 2
jarptica [38.1K]
Let unknown integer be n.

So then your sentence would translate to 3n² + n = 2.

If you need to solve for n then we can move 2 to left side by subtract both sides by 2:

3n² + n - 2 = 0

Now you can factor:

3n² + 3n -2n - 2 = 0

3n( n + 1 ) - 2( n + 1 ) = 0

( 3n - 2 )( n + 1 ) = 0

3n - 2 = 0   OR   n + 1 = 0

3n = 2   OR   n = -1

n = 2/3   OR   n = -1


Final answer: n = 2/3   OR   n = -1
6 0
3 years ago
Shirley spelled 12 of her 16 spelling words correctly on the test. What percent grade did shirley get on the test
Black_prince [1.1K]

Answer:

75%

Step-by-step explanation:

percent = part/whole * 100%

percent = 12/16 * 100%

percent = 0.75 * 100%

percent = 75%

Answer: 75%

5 0
3 years ago
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