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Katena32 [7]
3 years ago
7

Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring? −b, b2 − 4ac, 2a Use th

e part of the quadratic formula that you chose above and find its value given the following quadratic equation: 2x2 + 7x + 3 = 1
Mathematics
1 answer:
Korolek [52]3 years ago
3 0
It would be: b³ and 4ac. The equation containing these terms is the discriminant. The equation is b²-4ac. a, b and c are the first, second and third are the coefficients of the first, second and third terms of the quadratic equation, respectively.

Let's arrange the equation to the standard one first

2x² + 7x + 3 - 1 = 0
2x² + 7x + 2 = 0

b² - 4ac = (7)² - 4(2)(2) = 33

If the answer is a perfect square, then it can be factored. If not, like in this case, it can't be factored.
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FIND THE AREA OF THE FIGURE BELOW
Romashka [77]

Answer:

220 squared units

Step-by-step explanation:

first, find the area of the rectangle by multiplying 8 by 20. Then, fin the area of the triangle by multiplying 6 by 20 and then dividing the result by 2.

8*20=160

6*20=120

120/2=60

Finally, add them together and you get 220 units squared.

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2 years ago
Estimate the product or quotient. 91*17
Diano4ka-milaya [45]
The product is 1800
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8 0
3 years ago
The scott family wants to fill up their swimming pool to the very top with water.The length of the pool is 50 meters annd the wi
inn [45]

Answer:

12,500 meters cubed

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Grace folded clothes for 25mins then she worked on a puzzle for 45mins she started folding clothes at 8:20am what time did she f
Wittaler [7]

Answer:

9:30am

Step-by-step explanation:

Given data

Start time= 8:20am

Folding time= 25min

Time spent on Puzzle= 45min

Total time = 25+45= 70min= 1:10 min

Therefore the time she finishes is

8:20+ 1:10= 9:30 am

Hence she finished by 9:30am

5 0
3 years ago
Kellan’s lemonade recipe uses 4 scoops of lemonade powder for every 2.5 cups of water. Kellan uses 10 scoops of lemonade powder
Rina8888 [55]

Answer:

6.25 cups of water

Step-by-step explanation:

So I first write out the rates: 4:2.5 and also 10:?

So let's find out how the scoops changed, as in how did you get 4 to become 10 so you can do the same thing to 2.5 and get ?.

To go from 4 to 10 you MULTIPLY/DIVIDE. DON'T ADD OR SUBTRACT. 10 divided by 4 (to see what you multiplied by) is 2.5.

So we multiplied 4 by 2.5 to get 10. So if we multiply 2.5 by 2.5 we get 6.25.

So 4:2.5  =  10:6.25  

?=6.25

Hope this helps!

3 0
3 years ago
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