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3 years ago

Express 1.25 as a percentage a) you can't have percentages greater than 100%

Mathematics

1 answer:

MakcuM [25]3 years ago

7 0

D I think the answer

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What is the period of the function y = 2sin x?. A. 2Pi. B. Pi. C. [-2,2]. D. All Real Numbers

Morgarella [4.7K]

Answer:

Step-by-step explanation:

The given function is

$y=2sin(x)$

Notice that the indepedent variable doesn't have any transformation, that means the period doesn't change. In other words, this function has the same period than its parent function which is $2\pi$ .

Therefore, the answer is A.

The image attached shows the graph of this function, there you can observe the period of the function.

Also, notice that this function is verticall stretched by a scale of 2, which doesn't change its original period.

8 0

3 years ago

Evaluate 5 - 3(a3 – b2)2 when a = 3 and b = 5.

aliya0001 [1]

Answer:

Step-by-step explanation:

Evaluate 5 - 3(a3 – b2)2 when a = 3 and b = 5.

5 - 3 × (a³-b²)² a=3 and b=5

5 - 3 × (3³ - 5²)² =

5 - 3 × (27 - 25)² =

5 - 3 × (2)² =

5 - 3 × 4 =

5 - 12 =

-7

7 0

2 years ago

The sum of the first two terms of an infinite GP is 6 and each term is 5 times the sum of the succeeding termsthen the second te

kozerog [31]

Answer:

$\dfrac{6}{7}$ .

Step-by-step explanation:

It is given that the sum of first two terms of an infinite GP is 6.

nth term of a GP is

$a_n=ar^{n-1}$

$a+ar=6$ ...(1)

Each term is 5 times the sum of the succeeding terms.

$a_n=5(a_{n+1}+a_{n+2}+...+\infty)$

$ar^{n-1}=5(ar^n+ar^{n+1}+...+\infty)$

$ar^{n-1}=5ar^n(1+r+r^2+...+\infty)$

Divide both sides by a.

$r^{n-1}=5r^n(\dfrac{1}{1-r})$ $[\text{Sum of infinite GP}=\dfrac{a}{1-r}]$

$\dfrac{r^n}{r}=\dfrac{5r^n}{1-r}$

$\dfrac{1}{r}=\dfrac{5}{1-r}$

$1-r=5r$

$1=6r$

$\dfrac{1}{6}=r$

The common ratio is 1/6.

Put r=1/6 in (1).

$a+a(\dfrac{1}{6})=6$

$6a+a=36$

$7a=36$

$a=\dfrac{36}{7}$

Second term $ar=\dfrac{36}{7}\times \dfrac{1}{6}=\dfrac{6}{7}$

Therefore, the second term is $\dfrac{6}{7}$ .

4 0

3 years ago

3/8 + (-7/8)=<br> Write the answer in simplest form

ludmilkaskok [199]

Answer:

(3 ÷ 8) + (-7 ÷ 8)

0.375 + -0.875

-0.5

Hope this helps !

5 0

3 years ago

find the equation of the line below. I need it before wednesday so can you help if you know the answer to the question, thanks.

serg [7]

Yes answer is siddu mussala

3 0

3 years ago