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Tomtit [17]
2 years ago
15

Factor the following quadratic. y=2x^2 - 5x - 3

Mathematics
1 answer:
Reptile [31]2 years ago
3 0

Answer:

(2x + 1)(x - 3)

Step-by-step explanation:

y = 2 {x}^{2}  - 5x - 3

2 {x}^{2}  - 5x - 3 = 0

(2x + 1)(x - 3)  = 0

x =  -  \frac{1}{2}

x = 3

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Estimate the sum of 196 + 482
pshichka [43]
The estimated sum of 196 and 482 is 700.

We do estimates when we do mental calculation. We relate the number to the nearest number that can easily be computed mentally.

196 is near 200 so we round it up to 200
482 is near 500 so we round it up to 500

Thus, 200 + 500 = 700.

700 is the estimated sum.
5 0
3 years ago
Read 2 more answers
There are 7 people in a room. Each person shakes hands once. How many handshakes will there be?
DiKsa [7]

7 people so first one shakes hand with the remaining people. that is 6

The 2nd person also shakes hand with 6 persons but we have already counted his handshake with first person. so we have to add 6-1 = 5 shakes for 2nd person

like wise 3rd person shakes hand with the remaining 6-2 = 4 people

4th person with 6-3=3 people

5th person with 6-4= 2 persons

6th person with 6-5=1 person

and 7th one with no one because already he has shaken his hand with everyone.

since these people shake their hands with others only once we just have to add the obtained values

6+5 +4+3+2+1= 21

totally 21 handshakes will be there in that room

7 0
3 years ago
Trying to find the missing segment to the triangle in the attached image.
kupik [55]

Answer:

25

Step-by-step explanation:

The Side Splitter Theorem says that if a line intersects two sides of a triangle and is parallel to the third side of the triangle, it divides those two sides proportionally. Therefore:

6/15 = 10/?

6*? = 10*15

? = 10*15/6

? = 25

3 0
3 years ago
If the chick grows at a rate of 4.8 grams/day and weighs 53.8 grams on day 4, how much did the chick weigh (in grams) the day it
Makovka662 [10]

Answer:

Step-by-step explanation:

y = 4.8x + C

53.8 = 4.8(4) + C

53.8 = 19.2 + C

C = 34.6

8 0
2 years ago
Combining like terms in a quadratic expression.... simplify -11x^2 - 3x - 7x^2 + 9 + 8x HELP PLEASE! AND A FEW OTHERS!
valentina_108 [34]
The answer is 4x^2 +5x+9

You will first solve the same variables such as x^2 

11x^2 - 7x^2 = 4x^2

now you will solve the variables with x 

-3x +8x = 5x

so the answer you will get will be 4x^2 +5x = 9
8 0
3 years ago
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