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2 years ago

Which values of c will cause the quadratic equation -2 + 3x + c = 0 to have no real number solutions? Check all that

Mathematics

2 answers:

GarryVolchara [31]2 years ago

8 0

Answer:-9/2 and -5

Step-by-step explanation:

ss7ja [257]2 years ago

8 0

Answer: 1) -5 and 2)-9/2

Step-by-step explanation: i got it right :))

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Hiroto’s texting plan costs $20 per month, plus $0.05 per text message that is sent or received. Emilia’s plan costs $10 per mon

Ghella [55]

The answer is a i think sorry if im wrong

3 0

2 years ago

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An airplane, flying at a constant speed of 360 mi/hr and climbing at a 30 degree angle, passes over a point P on the ground at a

Klio2033 [76]

Answer:

Step-by-step explanation:

Given

velocity of airplane is 360 mi/hr

inclination of climbing $30^{\circ}$

Plane velocity can be divided in to x & y component

Velocity in x component is $360\cos30$

Velocity in y component is $360\sin30$

Thus distance traveled in x axis is $=360\cos30\times \frac{1}{60}$

=60cos30=51.96 miles

Distance travel in upward direction i.e. in Y axis

$=360\sin30\times \frac{1}{60}=30 miles$

so total altitude gain by plane is 30+4=34 miles

Horizontal distance traveled is 51.96

inclination w.r.t to point p

$tan\theta =\frac{34}{51.96}=0.654$

$\theta =33.18^{\circ}$

Initial inclination is $90^{\circ}$

therefore rate at which its distance is changing is $360\cos30=311.76 miles /hour$

3 0

2 years ago

A certain amount of money is shared in a ratio 2:3:9. If the difference between the first and second shares is $40, then the amo

Alex787 [66]

Answer:

The amount of money shared is 360

Step-by-step explanation:

We are given that A certain amount of money is shared in a ratio 2:3:9.

Let x be the ratio

So, Shares of amount = 2x,3x and 9x

We are given that the difference between the first and second shares is $40

$\Rightarrow 3x-2x=40$

$x=40$

So, Shares are :

2x=2(40)=80

3x=3(40)=120

4x=4(40)=160

So,Total amount = 80+120+160=360

Hence the amount of money shared is 360

3 0

2 years ago

Which of the three following graphs display the same data?

Zepler [3.9K]

Answer:

B. I and III

Step-by-step explanation:

I and III both have the same data:

March, 73

April 74

May 78

June 84

July 75

II has different data

March 71

April 72

May 85

June 90

July 60

Since I and III have the exact same data, choice B is the best answer

Hope this helps! :)

3 0

2 years ago

Read 2 more answers

A family of five recently replaced its 5-gallon-per-minute showerheads with water-saving 2-gallon-per-minute showerheads. Each m

kykrilka [37]

Answer:

Family will save 3600 gallons of water by replacing the shower-heads.

Step-by-step explanation:

Number of family members in a family = 5

Each member of the family averages shower per day = 8 minutes

Total time for shower = 5×8 = 40 minutes

With a 5 gallon shower-heads each member will use water in a day = 5×40 = 200 gallons

Water consumption in 30 days = 200×30 = 6000 gallons per month

After replacing the shower-heads with 2 gallons per minute shower-heads family will use the amount of water = 40×2= 80 gallons per day

Water used in one month = 80×30 = 2400 gallons

Now water save by the family in 30-day period = 6000 - 2400 = 3600 gallons

Therefore, family will use 3600 gallons less water by replacing the water saving water heads.

8 0

2 years ago