3 years ago

The equation is 2x^2+5x=3 has how many real solutions?

Mathematics

2 answers:

bogdanovich [222]3 years ago

7 0

C// Two Real Solutions

sergeinik [125]3 years ago

6 0

It has two real solutions

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This data gives the average number of hours of exercise each week for different students.

vazorg [7]

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3 years ago

tickets of a program at college cost $4 for general admission or $3 with a student ID. if 180 people paid to see a performance a

Licemer1 [7]

Answer:

75 general

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Step-by-step explanation:

(it's a system)

4x+3y=615

x+y=180

(system as well)

4x+3y=615

x=180-y

4(180-y)+3y=615

720-4y+3y=615

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3 years ago

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mixer [17]

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3 years ago

Which best describes the sides of all trapezoids?

Fiesta28 [93]

C. Only one pair of sides is parallel.

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4 years ago

A coin purse contains d dimes and q quarters. There are 35 coins in the purse, and the total value of the coins is $5.60. Create

pogonyaev

Answer:

14 dimes, 21 quarters

Step-by-step explanation:

Represent dimes with d and quarters with q.

So: 35 coins means

$d + q = 35$

1 dime = $0.10 and 1 quarter = $0.25. So, a value of $5.60 means

$0.10d + 0.25q = 5.60$

So, the system of equations is:

$d + q = 35$

$0.10d + 0.25q = 5.60$

Make d the subject in $d + q = 35$

$d = 35 - q$

Substitute 35 - q for d in $0.10d + 0.25q = 5.60$

$0.10d + 0.25(35 - q) = 5.60$

Open bracket

$0.10d + 8.75 - 0.25q = 5.60$

Collect Like Terms

$0.10d - 0.25q = 5.60 - 8.75$

$-0.15q = -3.15$

Solve for q

$q = \frac{-3.15}{-0.15}$

$q = 21$

Substitute 21 for q in $d = 35 - q$

$d = 35 - 21$

$d = 14$

7 0

3 years ago