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4 years ago

Which two factors are needed in order to calculate the speed of a wave?

1 answer:

5 0

"Frequency and wavelength" are the two factors among the choices given in the question that are <span>needed in order to calculate the speed of a wave. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has come to your great help.</span>

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0.6666666……… as a percentage

Gelneren [198K]

Answer:

2/3

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Yoshi is making blueberry muffins. He needs 1 1/4 cups of blueberrie to make 1 batch pf muffins. How many cups will he need to m

AURORKA [14]

Answer: $3\dfrac{1}{8}\ \text{cups}$

Step-by-step explanation:

Given

Yoshi need $1\frac{1}{4}$ cups of blueberries to make 1 batch of muffins

convert mixed fraction to fraction

$\Rightarrow 1\dfrac{1}{4}=\dfrac{5}{4}$

i.e. $\frac{5}{4}$ cups are required for 1 batch of muffins

for $2\frac{1}{2}$ batch or $\frac{5}{2}$ batch it is given by

$\Rightarrow \dfrac{5}{2}\times \dfrac{5}{4}\\\\\Rightarrow \dfrac{25}{8}=3\dfrac{1}{8}\ \text{cups}$

4 0

3 years ago

Simiplify.<br> U^2 - 4 / U^2 - 2u

Papessa [141]

Remember
difference of 2 perfect squares
a^2-b^2=(a-b)(a+b)

and the undistributiv propeoryt
ab-ac=a(b-c)

so we have
$\frac{u^{2}-4}{u^{2}-2u}$
undistribute and factor
$\frac{(u-2)(u+2)}{u(u-2)}$
cancel out the one ( (u-2)/(u-2)=1)

$\frac{(u+2)}{u}$ is result

3 0

3 years ago

Read 2 more answers

Simplify the expression.

denis23 [38]

Answer:

option d

Step-by-step explanation:

$\sf \boxed{a^m*a^n = a^{m+n}\\\\}$

$\sf \left(\frac{m^{-1}m^{5}}{m^{-2}} \right)^{-3} =\left(\dfrac{m^{-1+5}}{m^{-2}}\right)^{-3}$

$\sf = \left(\dfrac{m^4}{m^{-2}}\right)^{-3}\\\\$

$\boxed{\dfrac{a^{m}}{a^{n}}=a^{m+n}}$

$\sf = \left(m^{4-[-2]}\right)^{-3}\\\\ =\left(m^{4+2}\right)^{-3}\\\\ = \left(m^6\right)^{-3}\\\\$

$\boxed{(a^{m})^n=a^{m*n}}$

$\sf= m^{6*(-3)}\\\\ = m^{-18}$

$\boxed{a^{-m}=\dfrac{1}{a^m}}$

$\sf=\dfrac{1}{m^{18}}$

8 0

2 years ago

Alejandra spent her birthday money on a video game that cost 24$,a controller for 13$,and a memory card for 16$ . The total tax

natita [175]

Answer: Alejandra gave $60 to the cashier.

Step-by-step explanation:

Hi, to answer this question we have to write an equation with the information given.

We have to subtract to the amount that Alejandra paid(x) the sum of the costs of each product [videogame (24), controller (13) and memory card (169] and the total tax (3). the expression must be equal to the amount received in change.

Mathematically speaking:

x -(24+13+16+3) = 4

Solving for x:

x - 56 =4

x = 4+56

x =60

Alejandra gave $60 to the cashier.

Feel free to ask for more if needed or if you did not understand something.

5 0

4 years ago