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N76 [4]
3 years ago
8

X:x is a square number and 20<x <100​

Mathematics
1 answer:
Neko [114]3 years ago
8 0

Answer:

As the provided trinomial is x^2 + 20x - 100, it is not a perfect square trinomial.

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Which value for y makes the equation y - 2.5 = 1.95 true? A. y = 0.78 B. y = 4.875 c. y = 48.75 D. y = 4,875​
irina1246 [14]

Answer: B is the answer

Step-by-step explanation:

7 0
3 years ago
Use the four-step process to find f'(x) and then find f'(1), f'(2), and f'(3).
Soloha48 [4]

Step 1: evaluate f(x+h) and f(x)

We have

f(x+h) = -(x+h)^2+6(x+h)-5 = -(x^2+2xh+h^2)+6x+6h-5

= -x^2-2xh-h^2+6x+6h-5

And, of course,

f(x)=-x^2+6x-5

Step 2: evaluate f(x+h)-f(x)

f(x+h)-f(x)=-x^2-2xh-h^2+6x+6h-5-(-x^2+6x-5)=-2xh-h^2+6h

Step 3: evaluate (f(x+h)-f(x))/h

\dfrac{f(x+h)-f(x)}{h}=-2x-h+6

Step 4: evaluate the limit of step 3 as h->0

f'(x) = \displaystyle \lim_{h\to 0} \dfrac{f(x+h)-f(x)}{h}=-2x+6

So, we have

f'(1) = -2\cdot 1+6 = 4,\quad f'(2) = -2\cdot 2+6 = 2,\quad f'(3) = -2\cdot 3+6 = 0

5 0
3 years ago
The opening balance of one of Jennies 30-day billing cycles for her credit card was $1220, and it remained that amount for the f
natima [27]

Answer:

1) 2.71%

2) $38.32

Step-by-step explanation:

Opening balance = $1220

Balance after 10 days (after expense) = $1690

Balance after 10 days(after payment) = $1340

APR = 33%

1) Periodic interest rate = APR × \frac{No. of days in a billing cycle}{365}

                                  =  33%× 30/365

                                  = 2.71%

2) Interest charged for first 10 days = \frac{1220*2.71*\frac{10}{30} }{100}

                                                              = $11.02

Interst charged for the next 10 days = \frac{1690*2.71*\frac{10}{30} }{100}

                                                            = $15.2

Interest charged for the next 10 days = \frac{1340*2.71*\frac{10}{30} }{100}

                                                           = $12.10

Total interest for 30 days = 11.02+15.2+12.10

                                          = $38.32

6 0
3 years ago
If it takes 90 minutes to wait in line to purchase 12 eggs, how many eggs could you purchase if you waited 120 minutes?
AlekseyPX

Answer:

16 eggs

Step-by-step explanation:

we know that

it takes 90 minutes to wait in line to purchase 12 eggs

so

using proportion

Find out how many eggs could you purchase if you waited 120 minutes

\frac{90\ min}{12\ eggs}=\frac{120\ min}{x\ eggs}\\\\x=12(120)/90\\\\x= 16\ eggs

8 0
4 years ago
Twice the difference of a number and 4 is equal to three times the sum of the number and 4.
Delvig [45]

Answer:

2(x-4)=3(x+4)

Step-by-step explanation:

that's easy.

6 0
3 years ago
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