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SIZIF [17.4K]
2 years ago
14

How to determine number of possible real roots for polynomial.

Mathematics
1 answer:
Viktor [21]2 years ago
5 0

Answer:

using delta

Step-by-step explanation:

delta=b^2-4ac

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5. Explain how you could use compatible numbers to estimate 245 ÷ 3. Then estimate the quotient.​
sdas [7]

Answer:

8

Step-by-step explanation:

Compatible numbers are defined as the numbers which are very close to the numbers that they are replacing that divides evenly into each other.

In the context, we have to estimate the quotient using the compatible numbers in order to estimate 245 divided by 3.

So, estimating 245 as 240 and 3 as 30.

Here, 240 is very close to 245 and 30 is close to 3. So the quotient is the result when we divide 240 by 30 and it divides evenly into 240.

We first divide the non zero parts of each number i.e. 24 by 3 to get the first part of the estimate.

Then we add on the zero if there were left in the problem to get your estimate.

Therefore,

240 / 30 = 8

So here, the quotient is estimated as 8.  

4 0
3 years ago
The length of a rectangle is 3 inches more than twice its width, and its area is 65 square inches. What is the width?
gogolik [260]
Width = 5 
5x2 = 10 and the length would 13... which is 3 more inches than twice the width
6 0
3 years ago
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X squared divided 2=w-y make x the subject
Artemon [7]
Do you mean this? 
x= sqrt{2(w-y)} 
8 0
3 years ago
A billiard ball is struck by a cue. It travels 100 cm before ricocheting off a rail and traveling another 100 cm into a corner p
Airida [17]

Answer:

76.53 cm

Step-by-step explanation:

From the question, the triangle formed has 2 sides and an included angle ;

Angle, θ = C = 45°

We use cosine rule :

Taking the side to find as c

a = 100 ; b = 100

From cosine rule :

c = sqrt(a² + b² - 2abCosC)

c = sqrt(100² + 100² - 2(100*100)Cos45

c = sqrt(10000 + 10000 - 20000 * 0.7071067)

c = sqrt(20000 - 14142.135)

c = sqrt(5857.865)

c = 76.536690

c = 76.53 cm

6 0
3 years ago
HELP ASAP PLEASE HELP QUICK!!!!
masha68 [24]

Answer:

4:5 that's last answer i got

6 0
3 years ago
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