3 years ago

When you multiply a number by 1/4 is the product 1/4 of the original number?

Mathematics

1 answer:

ad-work [718]3 years ago

3 0

YES ! ! !
Remember this: In math, "of" almost always means "times".

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For what values of k

sergey [27]

If y = cos(kt), then its first two derivatives are

y' = -k sin(kt)

y'' = -k² cos(kt)

Substituting y and y'' into 49y'' = -16y gives

-49k² cos(kt) = -15 cos(kt)

⇒ 49k² = 15

⇒ k² = 15/49

⇒ k = ±√15/7

Note that both values of k give the same solution y = cos(√15/7 t) since cosine is even.

3 0

2 years ago

Kiri has red and white roses in groups of 8. She has x groups of red roses and y groups of white roses. Which expression shows t

Marizza181 [45]

Answer:

8x+8y

Step-by-step explanation:

red roses = 8 × x = 8x

white roses = 8 × y = 8y

total= 8x+8y

7 0

2 years ago

If △ J K L ≅ △ M N O and △ M N O ≅ △ P Q R , which of the following statements must be true?

melomori [17]

Answer:

Δ JKL ≅ ΔPQR

Step-by-step explanation:

Hopefully this was one of the following statements. You didn't post the statements

5 0

2 years ago

Consider the following graph of an exponential function

juin [17]

Answer:

Step-by-step explanation:

5 0

2 years ago

2 raised to power x+1=1

Alenkinab [10]

Answer:

-1

Step-by-step explanation:

As you know every number raised to the power of zero is equal to one.

and here we have

$2^{x+1} = 1$

$2^{0} = 1$

$2^{0} = 2 {}^{x + 1}$

$x + 1 = 0$

$x = - 1$

4 0

2 years ago