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3 years ago

What is 40 % 0f 20 ?

Mathematics

2 answers:

larisa [96]3 years ago

7 0

The answer is 40% of 20 is 8 :)

BaLLatris [955]3 years ago

4 0

Its 8 hope dis helped :)

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A car depreciates in value by 17% per year.

otez555 [7]

Answer:

17%of 23000

17/100×23000

1 yrs depreciation is 3910

then

after 4 years depreciation is 4×3910

=15640

the worth of after 4 yrs is 23000-15640

=Rs 7360

7 0

3 years ago

Tilly begins a running program to train for a marathon. She starts by running 1 mile the first week and tripling the number of m

Nuetrik [128]

Answer:

The sequence is a function as for any value of n we can not get more than one different $A_n$ value.

Step-by-step explanation:

Tilly starts by running 1 mile in the first week and tripling the number of miles each week.

Now, the number of miles Tilly will run can be modeled by the sequence $A_n = 1 \times 3^{(n - 1)}$ , where n is the number of weeks since she began her program.

Therefore, in the second week she runs 3 miles, in the third week she runs 9 miles and so on.

Therefore, the sequence is a function as for any value of n we can not get more than one different $A_n$ value. (Answer)

8 0

4 years ago

If the maximum value of y =-x²+ax+b is 8 when x = 3, find the values of a and b

LuckyWell [14K]

Y' = -2x+a
0 = -2(3)+a
6=a

8=-(3)^2 +(3)(6)+b
b=-1

8 0

3 years ago

Nadya has 19 1/4 yards of ribbbon she cuts ribbon into peices that measure 1 3/4 how many pieces of ribbon doe Nadya have?

tiny-mole [99]

Answer:

Step-by-step explanation:

Well basically i took 19 1/4 and divided it by 1 3/4 and there for i got 11. YOUR WELCOME.

4 0

3 years ago

Please answer & help me !! will mark brainliest and reward points !!

Lynna [10]

Answer:

$\frac{1 + \frac{a}{b} }{1 - \frac{ {a}^{2} }{ {b}^{2} } } \\\\ = \frac{ \frac{b + a}{b} }{ \frac{ {b}^{2} - {a}^{2} }{ {b}^{2} } } \\\\= \frac{b + a}{b} \times \frac{ {b}^{2} }{{b}^{2} - {a}^{2} } \\ \\ = \frac{b + a}{b} \times \frac{ {b}^{2} }{(b + a) (b - a)} \\ \\ = \frac{b}{b - a}$

6 0

4 years ago