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3 years ago

The solutions to the equation 2x^2 + x - 1 = 2 are x = -3/1 or x = __

Mathematics

1 answer:

Svetlanka [38]3 years ago

7 0

Step-by-step explanation:

2x² + x -1 = 2

2x² + x -1 -2 = 0

2x² + x -3 = 0

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

x = -3/2, 1

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The answer is x = 7<br> Problem is I don’t how to get there

3241004551 [841]

Answer:

x=7

Step-by-step explanation:

okay so you can see that there is a isocales triangke so that means the other base angle has to be 8x

then you know that the dioganels are perpendicular to each other

so then you know that 8x+5x-1+90=180

13x-1=90

13x=91

x=7

hope that helps

8 0

3 years ago

Reperesent 1.235 as P/q.

8090 [49]

Answer:

$\frac{247}{200}$

Step-by-step explanation:

1.235

= 1 + 0.235 ( the place value of the 5 is thousandths ) , then

= $\frac{1000}{1000}$ + $\frac{235}{1000}$

= $\frac{1235}{1000}$ ( divide numerator/denominator by 5 )

= $\frac{247}{200}$ ← in simplest form

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2 years ago

The revenue from selling x tickets to a concert is the represented by the function r(x)=10x. The cost for buying tickets is repr

fgiga [73]

Step-by-step explanation:

All these fancy terms is confusing. We just need to substitute the original equations into the final problem statement.

$p(x) = 10x - (8x+40) = 10x - 8x - 40$

We can then substitute 100 for x and solve.

$p(100) = 10(100) - 8(100) - 40$

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3 years ago

2x+2(1960/x)=200 please help for math hw

sp2606 [1]

Two solutions:

1. x =(100-√2160)/2=50-6√ 15 = 26.762

2. x =(100+√2160)/2=50+6√ 15 = 73.238

3 0

3 years ago

Which expression would you use to determine the missing number in the sequence? 12, ____, 26, 33, 40

Paladinen [302]

Answer:

The answer is 19.

Step-by-step explanation:

This is because the sequence adds up by 7 each time. Have a nice day!

4 0

3 years ago

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