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alexandr402 [8]
3 years ago
13

How many unique values of x solve x2 + 14x + 49 = 0?

Mathematics
1 answer:
Natalka [10]3 years ago
3 0
I think x= -7 but I'm not to sure
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Find the standard form of the complex number 6(cos(30degree) +i sin (30 degree))
Marat540 [252]

Answer:

= 3√3 + 3i

Step-by-step explanation:

Cos 30° = √3/2

Sin 30°  = 1/2

Therefore;

z = 6 (cos 30° + i6 sin 30°)

  = 6 (√3/2) + i 6 (1/2)

   = 3√3 + 3i

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Write down the numbers in condensed form 200+40+5+0,3+0,07
mezya [45]

Answer:

Step-by-step explanation:

240.37

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2 years ago
Which expression has an equivalent value to x2 + 9x + 8 for all values of x?
Sindrei [870]
The first one! hope it helps
7 0
3 years ago
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Nothing I find in my notes or online doesn't show me how to solve this. I know how to set it up, but brainly ain't letting me su
Anon25 [30]

Answer:

x=8

Step-by-step explanation:

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8x=64

(divide 8 from 64)

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8 0
2 years ago
On a coordinate plane, a parabola opens down. It has an x-intercept at (negative 5, 0), a vertex at (negative 1, 16), a y-interc
weeeeeb [17]

Answer:

Step-by-step explanation:

Domain is all the x's and range is all the y's. There's no reason why you couldn't pop any x into the given equation and calculate it and get a number out. So literally ANY x can be used and found on this graph. So the domain is all real numbers, one of the first two answers is going to be the right one. Now, the range is all the y's on the graph. The problem says that the parabola opens down, which means it has a highest point. There is no graph above that point. That's the point (-1, 16). So 16 is the highest y-value you can find on the graph. All the rest of the y's are smaller. The range is all the y's such that the y's are 16 and smaller...in math that's written {y | y <= 16} So the second answer is the right one.

5 0
2 years ago
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