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jarptica [38.1K]
3 years ago
13

2x^2+3x+5=0 what are all the complex solutions?please i need help!!!

Mathematics
2 answers:
blagie [28]3 years ago
7 0
2x^2+3x+5=0

Step 1: Use quadratic formula with a=2, b=3, c=5 ^^ than do ^^

There is no real solutions I'm pretty sure!

Hope this helped!!

vesna_86 [32]3 years ago
4 0
You'll want to use the quadratic formula:

-b (+/-) sqrt(b^2 - 4ac), all divided by 2a.

Under the square root you'll get:

-11

remember that the square root of -1 is i.

sqrt(-11) can be factored to sqrt(11*-1) and then sqrt(-1) * sqrt(11)

which becomes i*sqrt(11)

so your complex solution is:

-3 (+/-) (i*sqrt(11)), all over 4
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This is due tomorrow if someone could help me that would be great <3
kifflom [539]

<u>Hope this helped!</u>

<u>First Row</u>

\frac{5}{18}

\frac{10}{21}

\frac{9}{40}

6

5\frac{1}{3}

(this one is already done)

<u>Second Row</u>

4\frac{4}{9}

5\frac{1}{16}

\frac{13}{18}

6\frac{1}{4}

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5 0
2 years ago
What is the 100th term in the following arithmetic number pattern: 2,7,12
ivanzaharov [21]
So the change in between terms is 5 so you would put 5x, then for the first term, which is 2, 5*1(x)(because it's first term) then the difference between 5-2(because it's the 2nd term) So you would plug 100 in for x so 5(100)-3=497. Hope this helped!
3 0
3 years ago
Helppppppp
Yakvenalex [24]

Answer:

7 -if rounded to the nearest tenth would be 10

Step-by-step explanation:

The median is the number in the middle so

6-6-7-7-10-12-14

There are 7 numbers here so the middle number is 4 because there are 3 numbers before 4 and 3 numbers after 3 to get to 7 (that’s really hard to explain sorry but it’s a simple concept) my trick is to write it down then use two fingers to point at the first and last number and keep doing that moving in til I get to the middle number, which is 7. :)

6 0
2 years ago
Plssss help fast and give a small explanation
Marrrta [24]

Answer: the area of the triangle is 23.4 cm²

Step-by-step explanation:

The given triangle is not a right angle triangle. Since two sides and one angle are known, we can either apply the Heron's formula or the Sine formula which is expressed as

Area of triangle = 1/2abSinC

Where a and b are the sides of the triangle and C is the given angle. Therefore,

Area = 1/2 × 8.2 × 6.4 × Sin63

Area = 1/2 × 8.2 × 6.4 × 0.8910

Area = 23.4 cm² to the nearest tenth.

6 0
3 years ago
Helllppp i will give you brainliest if you can help meeeeeeeee
Alja [10]

Answer:

20 square meters

Step-by-step explanation:

To do this continue the line of the top of the rectangle so you split the figure into a triangle and a rectangle. The dimensions of the rectangle would be 8 by 2, so 8 * 2 = 16. Next, the dimensions of the triangle would be (4 - 2) by (8 - 4) = 2 by 4. The area would then be 2 * 4 = 8/2 = 4.

All you have to do now is add those two areas together, 16 + 4 = 20 square meters.

6 0
3 years ago
Read 2 more answers
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