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Georgia [21]
3 years ago
13

Find the discriminant of X^2+ 4x - 3 = 0

Mathematics
1 answer:
Drupady [299]3 years ago
5 0

Answer:

2 real solutions

Step-by-step explanation:

Given a quadratic equation in standard form

ax² + bx + c = 0 ( a ≠ 0 ), then the discriminant is

Δ = b² - 4ac

• If b² - 4ac > 0 then 2 real and distinct solutions

• If b² - 4ac = 0 then 2 real and equal solutions

• If b² - 4ac < 0 then no real solutions

x² + 4x - 3 = 0 ← is in standard form

with a = 1, b = 4, c = - 3 , then

b² - 4ac = 4² - (4× 1 × - 3) = 16 - (- 12) = 16 + 12 = 28

Since b² - 4ac > 0 then the equation has 2 real and distinct solutions

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Two more than 5 times a number is greater than or equal to 3
jenyasd209 [6]

Answer:

n ≥ 1/5

Step-by-step explanation:

Let the number be n.  Then 5n + 2 ≥ 3.

If you want to solve this for n, then subtract 2 from both sides, obtaining:

5n ≥ 1.  Isolate n by dividing both sides by 5.  Then we have   n ≥ 1/5

3 0
4 years ago
2-2x&lt;4? <br> Can someone please help me!
yKpoI14uk [10]

Answer:

x > -1

Step-by-step explanation:

To solve the inequality, use the same rules as solving equations.

2 - 2x < 4

-2x < 2

x > -1

Since you divide by a negative, you must switch the sign < to >.

6 0
3 years ago
Suppose water flows from a shower at a rate of 0.35 cubic feet per minute. do you use more water by taking a 15-minute shower or
timurjin [86]

Unit conversion is a way of converting some common units into another without changing their real value. The option in which more water will be used is by filling a bathtub.

<h3>Units conversion</h3>

Unit conversion is a way of converting some common units into another without changing their real value. for, example, 1 centimetre is equal to 10 mm, though the real measurement is still the same the units and numerical values have been changed.

Given water flows from a shower at a rate of 0.35 cubic feet per minute. Therefore, the water that will be used in the shower,

Water used in Shower = 0.35 × 15 = 5.25 cubic feets

Water used in bathtub = 0.5 yards³ = 13.5 cubic feets

Hence, the option in which more water will be used is by filling a bathtub.

Learn more about Units conversion:

brainly.com/question/4736731

#SPJ1

3 0
2 years ago
Could anyone prove this question correct... pls... I will mark branliest for step by step solution.
Masja [62]

Answer:

C

Step-by-step explanation:

the answer is 15. hope this helps

8 0
3 years ago
Which of these is the algebraic expression for "4 less than the product of 5 and some number?"
Anton [14]
Answer = 5p − 4 (third choice)

"4 less than the product of 5 and some number = 5p − 4
7 0
4 years ago
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