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Katena32 [7]
2 years ago
7

ASAP I NEED HELP AGAIN NO IDEA WHAT IM DOING HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Mathematics
2 answers:
lutik1710 [3]2 years ago
6 0
C = 2 pi r
2 x 3.14 x 5 = 31.4
AveGali [126]2 years ago
6 0

Answer:

15.7

Step-by-step explanation:

2x3.14x5²

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Identify any outlier(s) in the data.
GarryVolchara [31]
12 because the rest of the numbers are all similar except 12
6 0
2 years ago
If the squared difference of the zeroes of the quadratic polynomial x2+kx+30 is equal to 169 find the value of k and the zeroes
anyanavicka [17]

ANSWER

x  =  2 \: \: or \:  \:  x  =  15

Or

x  =   - 2 \: \: or \:  \:  x  =   -  15

EXPLANATION

The given polynomial is

f(x) = {x}^{2}  + kx + 30

where a=1,b=k, c=30

Let the zeroes of this polynomial be m and n.

Then the sum of roots is

m + n =  -  \frac{b}{a}  =  -k

and the product of roots is

mn =  \frac{c}{a}  = 30

The square difference of the zeroes is given by the expression.

( {m - n})^{2} =  {(m + n)}^{2} - 4mn

From the question, this difference is 169.

This implies that:

( { - k)}^{2}  - 4(30) = 169

{  k}^{2}  -120= 169

k^{2} = 289

k=  \pm \sqrt{289}

k=  \pm17

We substitute the values of k into the equation and solve for x.

f(x) = {x}^{2}   \pm17x + 30

f(x) = (x  \pm2)(x  \pm 15)

The zeroes are given by;

(x  \pm2)(x  \pm 15) = 0

x  =  \pm2 \: \: or \:  \:  x  =  \pm 15

5 0
3 years ago
(x + 17/5) - (3x - 7/4) = -2<br> Help me solve
pickupchik [31]

Answer:

x=143/40

or

x=3.575

Step-by-step explanation:

6 0
3 years ago
I dont understand both question?
diamong [38]
1- The interest rate is 7.5/year so 7.5/.75 year(9 months) at 500$ which would produce a profit of 28.13$ so a total of 528.13

2-7.5/year for 1.5 years(18 months) at 500$ so total interest is 56.25$ so the total is 566.25$
7 0
3 years ago
Last question of the day for 20 points :)
Jobisdone [24]
When x=0, y=4...

Therefore:

4=a*b⁰

b⁰=1, so a=4.

----------

When x=1, y=2...

Therefore:

2=4*b¹

4b=2

b=2/4

So... b=1/2.

This means that:

y=4*((1/2)^x)
6 0
3 years ago
Read 2 more answers
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