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4 years ago

Solve 2x2 + 5x + 5 = 0. Round solutions to the nearest hundredth.

Mathematics

2 answers:

kotykmax [81]4 years ago

7 0

Aight, so I just did all of that work to find There Are No Real Solutions.

Hope this helps y'all & that it saves ya from the trouble of doing work :D

borishaifa [10]4 years ago

3 0

I hope this helps you

2x^2+5x+5=0

disctirminant =5^2-4.2.5

disctirminant = -15

x1= -5+i .square root of 15/2.2

x2= -5- i .square root of 15/2.2

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2 triangles are shown. The second triangle is rotated 90 degrees to the right. A point is between both triangles.

Semmy [17]

Answer:

Its center of rotation

Step-by-step explanation:

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3 years ago

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COSINE LAW: Solve triangle PQR. round angles to the nearest tenth

Valentin [98]

Answer:

Hi,

Step-by-step explanation:

PR²=PQ²+QR²-2*PQ*QR*cos(51°)

=15²+12²-2*15*12*cos(51°)

=142,444659....

PR=11.9350...

PQ²=QR²+PR²-2*QR*PR*cos(R)

cos(R)=(12²+142.444...-15²)/(2*12*11.9350...)=0,21451112....

angle R=77,61315...°≈77.6°

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2 years ago

You and your friend race on a trail that is 10 miles long. In each situation, does your friend pass you before the end of the tr

Sliva [168]

For the first example given the answer would be No. you have a 4 mile head start. at the 4 mile line, your friend starts at 8 miles an hour and you start running at 6 miles an hour. basic addition should give the answer. In one hour time, you wouldve ran 6 miles plus the 4 you had as a head start, giving you the 10 miles you needed to reach the finish line. He on the other hand, Biked 8 miles in an hour time. By that time, you had just reached the finish line.

So the answer is no for the first example

For the second example the maths get bit harder. You start at the 5 mile point and you friend starts at the beginning point. You only need 5 miles to win, and your friend needs double (its actually more than double, because if it was perfectly doubled, you would tie the race. Your pace just has to be a bit more than half of his speed. his speed is 17mph. yours, by logic, needs to be even a tad bit more than 8.5mph. You need to have a faster speed than 8.5mph (8.51mph works perfectly) and you win by a hair. But when we se your example, you're only going at 7mph. A whole mile and a half behind pace. Sadly, he passes you short before winning.

The second example is YES he does pass you before the end of the trail.

Hope this helped. I spent around 20 minutes writing this answer, and a 5 star, like and noter as the "BRAINLIEST ANSWER" would be very much apreciated! Have a good day!!

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4 years ago

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Scorpion4ik [409]

Answer:

1800

Step-by-step explanation:

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3 years ago

A regular triangular pyramid has all of edges of length 36. What is the angle between any two faces of this pyramid?

GrogVix [38]

Answer:

The angle between any two faces of this pyramid is equal to $60\°$

Step-by-step explanation:

we know that

An equilateral triangle has three equal sides and three equal internal angles of measure 60 degrees

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All the faces in the regular triangular pyramid are equilateral triangles.

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4 years ago

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