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Anit [1.1K]
3 years ago
8

3x^2+5x-3 solve for x using quadratic formula

Mathematics
1 answer:
Anna11 [10]3 years ago
3 0

substitute the values from the quadratic formula.

a= 3

b= -5

c= -3

simplify the numerator

5±√61/2 times 3

Multiply 2 by 3

<h2><em>ANSWER:5±√61/6</em></h2>

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Find each sum or difference -1/2+1/3 please help quickly
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Answer:sum: -1/6

Step-by-step explanation:

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3 years ago
a car repair shop charge $80 per hour for labor and $210 for the parts of the car if it's auto parts of the repair for the car w
juin [17]
490-210= 280; 280/80= 3.5 or 3.5 hours
7 0
3 years ago
Given: ABCD is a ∥-gram, BF ⊥ CD , BE ⊥ AD, Prove: △ABE∼△CBF
drek231 [11]

Answer:

Hence proved △ABE∼△CBF.

Step-by-step explanation:

Given,

ABCD is a parallelogram.

BF ⊥ CD    and

BE ⊥ AD

To Prove : △ABE∼△CBF

We have drawn the diagram for your reference.

Proof:

Since ABCD is a parallelogram,

So according to the property of parallelogram opposite angles are equal in measure.

\therefore m\angle A = m\angle B ⇒1

And given that BF ⊥ CD and BE ⊥ AD.

So we can say that;

m\angle F=m\angle E=90\° ⇒2

Now In △ABE and △CBF

∠A = ∠C   (from 1)

∠E = ∠F    (from 2)

So by A.A. similarity postulate;

△ABE∼△CBF

7 0
3 years ago
Consider the following scenario: Let P(C) = 0.4. Let P(D) = 0.5. Let P(C|D) = 0.6. a. Find P(C AND D). b. Are C and D mutually e
Nataly_w [17]

a. By definition of conditional probability,

P(C | D) = P(C and D) / P(D)  ==>  P(C and D) = 0.3

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d. Using the inclusion/exclusion principle, we have

P(C or D) = P(C) + P(D) - P(C and D)  ==>  P(C or D) = 0.6

e. Using the definition of conditional probability again, we have

P(D | C) = P(C and D) / P(C)  ==>  P(D | C) = 0.75

3 0
3 years ago
Can you please answer 8.6 * 7, 16 * 1.4, 12 * 14, 7.3 * 20. altogether 15 points
fenix001 [56]
8.6*7=60.2, 16*1.4=22.4, 12*14=168, 7.3*20=146
7 0
3 years ago
Read 2 more answers
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