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Shalnov [3]
3 years ago
11

which of the following represents the set of possible rational roots for the polynomial shown below? x^3+5x^2-8x-20=0

Mathematics
2 answers:
FrozenT [24]3 years ago
4 0

Answer:

x - -5.78526086, -1.50769051, 2.29295138

Step-by-step explanation:

graph each side of the equation. the solution si the x-value of the point of intersection.

Marrrta [24]3 years ago
3 0

Answer:

{1,4,5,10,20}

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From 1970 to 1980, the consumer price index (CPI) increased from 38.8 to 82.4. If a dozen eggs cost $0.25 in 1970 and the price
Ganezh [65]
Understanding the Question
This may not be the actual way that the US government prepares the CPI, but it will provide a comparison. 

You can set up a proportion. The base number for the CPI is 38.8 in 1970. That number (38.8) has more than doubled to get to 82.4, which also tells us that there was inflation. What your parents and grandparents bought in 1970 went to double the amount in 1980. Gasoline certainly did that.

Givens
CPI in 1970 = 38.8
CPI in 1980 = 82.4
Eggs 1970 =  0.25
Edgs 1980 = X

Formula substitution and solution
CPI 1970 / CPI 1980 = cost of eggs 1970 / cost of eggs 1980
38.8/82.4 = 0.25 / x Cross multiply
38.8 * x = 0.25 * 82.4
38.8 * x = 20.625
x = 20.628 /38.8
x = 0.53 dollars of 53 cents.

53 cents in 1980 which is slightly double as predicted.

Footnote
As a matter of interest, my wife tells me that eggs now cost about 3.58 where we live. That's almost 7 times as expensive as they were in 1980. Something to think about. By the way, the price quoted is in Canada.
7 0
3 years ago
Is 3.1141141114 rational or irrational?
tatyana61 [14]
Stops or repeats, the number is rational. does not stop and does not repeat, the number is irrational.
4 0
3 years ago
Pls ans both the questions im very confused
lions [1.4K]

Answer:

Step-by-step explanation:

In Δ PQS and ΔPQT

∠QPS = ∠RPT       {Common angle}

∠PSQ = ∠PTR = 90°         {QS & RT are altitude}

QS = RT                            {given}

ΔPQS ≅ ΔPRT               {A A S congruent}

PQ = PS                         {CPCT}

So, PQR is an isosceles triangle.

9)

a) Flas card (I) and (iii) are congruent.

b)  A S A congruent

c) BC ≅ RP

5 0
2 years ago
DeShawn pays 8$ for 12 pounds of sugar. What is the price per pound of sugar
Serhud [2]

Answer:

DeShawn pays .67 cent per pound of sugar

3 0
2 years ago
What is the discriminante of 9x^2+10x
Leni [432]
The discriminant of y=ax^2+bx+c is b^2-4ac

given
9x^2+10x+0
a=9
b=10
c=0

discriminant=10^2-4(9)(0)=100-0=100

the discriminant is 100
6 0
3 years ago
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