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Stolb23 [73]
3 years ago
6

Without calculating, how do you know that the equation | 4x-7 | = -1 has no solution ?

Mathematics
1 answer:
Hatshy [7]3 years ago
4 0
Hello

By just looking at the question, you should know that if there an absolute value symbol (which are those two straight lines surrounding that equation), the answer will always be positive.
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Decrease £645 by 69%<br> Give your answer rounded to 2 DP.
Alisiya [41]

Answer:

£199.95

Step-by-step explanation:

100% - 69% = 31%

31% of £645

= 31/100 × £645

= 0.31 × £645

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= £199.95 is the final answer as it cannot be rounded off to 2 DP.

4 0
3 years ago
Which of the following would be the most logical first step to solving this
NikAS [45]

Answer:

D is correct option

Step-by-step explanation:

The correct option is D.

The standard quadratic equation is ax²+bx+c=0

Where a and b are coefficients and c is constant.

It means that constant are on the L.H.S and there is 0 on the right hand side.

Therefore to make it a quadratic equation first of all you have to add 11 at both sides so that the R.H.S becomes 0.

The given equation is:

2x2-x+ 2 = -11

If we add 11 on both sides the equation will be:

2x2-x+ 2 +11= -11+11

2x^2-x+13=0

Thus the correct option is D

You can further solve it by applying quadratic formula....

8 0
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Really don’t kno it’s a hard question
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Step-by-step explanation:

8 0
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