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ICE Princess25 [194]
3 years ago
5

Solve each quadratic equation. Show your work. 14. (2x – 1)(x + 7) = 0

Mathematics
2 answers:
melisa1 [442]3 years ago
5 0
<span>(2x – 1)(x + 7) = 0

2x-1=0
2x=1
x=1/2
x=0.5

x+7=0
x= -7
</span>
ahrayia [7]3 years ago
5 0
Solve your equation step-by-step.

(2x−1)(x+7)=0

Simplify both sides of the equation.

2x2+13x−7=0

Factor left side of equation.

(2x−1)(x+7)=0

Set factors equal to 0.

2x−1=0 or x+7=0

x=1/2 or x=−7

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The space shuttle discovery was retired in spring thousand and 12 discovery was first launched in 1984 and flu over 149,000,000
Rina8888 [55]

Answer:

it would be about 5984 times around the earth

Step-by-step explanation:

first of all 149,000,000 miles is active lifetime

Using those measurements, the equatorial circumference of Earth is about   24,901 miles

so therefore if you divide 149,000,000 by 24,901 you would get the answer of 5983.69543392 so if you round all the numbers to the nearest whole number you would get 5984

hope tis helps out with your question

5 0
3 years ago
The question is below (This an order of operation question)
olga_2 [115]

Step-by-step explanation:

i am 90% sure this is correct

7 0
3 years ago
Read 2 more answers
At Gamestop you can buy a Xbox One for $150 and each game to go with it would cost $24. Or, you can buy a Playstation 4 for $180
Reptile [31]

Answer:

Xbox One is the better console to buy.

Adding the game console for $150.00 with 7 games costing 24, they will cost you $318.00

While the PlayStation 4 with the 7 games cost a total of $320.00

Step-by-step explanation:

6 0
3 years ago
83/63 as a mixed number?
JulsSmile [24]
Since 63 goes into 83 once, with a remainder of 20, write the mixed fraction like so: 

1 20/63

Also, because you cannot simplify this answer anymore, this is the final answer. 

Hope this helps!
4 0
3 years ago
Read 2 more answers
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the
m_a_m_a [10]

Answer:

Required volume is \frac{4864\pi}{3} unit.

Step-by-step explanation:

Given equations of curves,

y=32-x^2, y=x^2

substitute second in first we will get,

x^2=36-x^2\implies x^2=16\implies x=\pm 4

When x=4, y=16 and x=-4, y=16. Thus both curves intersect at the points (4,16),(-4,16). And thus -4.

Considering width of the representative rectangle as \Delta x which is parallel to x-axis because of considering cylindrical shell. Therefore volume of the shell is given by,

V_{Shell}=(\textit{Length of box})\times (\textit{Width of box})\times (\textit{Thikness of box})

Now,

Length of generating box=Length of \Delta x from line x=4(axis of revolution)=circumference of the shell=(4-x)

Width of box=(36-x^2)-x^2

Hence,

V_{Shell}

=\int_{-4}^{4}2\pi (4-x)(36-2x^2)dx

=2\pi\int_{-4}^{4}(144-36x-8x^2+2x^3)dx

=2\pi\{144\big[x\big]_{-4}^{4}-18\big[x^2\big]_{-4}^{4}-\frac{8}{3}\big[x^3\big]_{-4}^{4}+\frac{1}{2}\big[x^4\big]_{-4}^{4}\}

=\frac{4864\pi}{3}

which is required volume of generating area.

3 0
3 years ago
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