MATHEMATICS MIDDLE SCHOOL

The formula f equals c over lambda, where f = frequency, c = wave speed, and λ = wavelength, is used to calculate frequency. Solve this formula for c.A.c = f − λ
B.c = fλ
C.c = f + λ
D.c equals f over lambda

Answers

Answer 1
Answer:

Answer:

B. c = fλ

Step-by-step explanation:

Given formula,

f equals c over lambda,

\implies f=(c)/( \lambda)

Where, f = frequency,

c = wave speed,

λ = wavelength,

By the above formula,

f* \lambda = c   ( By cross multiplication ),

Hence, the required formula for c,

c=f\lambda

Option 'B' is correct.
Answer 2
Answer:

Step-by-step explanation:

if f = c/lambda

then c = f × lambda

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3)Jacob strode up 24 steps in 12 seconds to reach his apartment on the second
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Answers

Answer:

18 steps.

Step-by-step explanation:

He strode 24steps in 12secs, this means that in 1sec, he strode 2steps. So, in 9secs, he strode 18steps

write an equation to determine the area of each rectangle , then find the area. 1. 19 ft 11 ft 2. 18.3 cm 5.9 cm 3. 5.27 m 10 m

Answers

1. 19×11=209 cm^2 2. 18.3×5.9=107.97 ft^2 3. 5.27×10= 52.7 m^2 Area= length times width

Find the slope of the line that passes through (-2,1),(1,10)A. 3
B. -3
C. 1/3
D. -1/3

Answers

Answer:

Answer A

Step-by-step explanation:

(10 - 1)/(1 - ( - 2)) \n = (9)/(3) = 3

ray cuts out a figure that has 4 equal sides and no right angles. what is the best name for the figure?​

Answers

Answer:

Trapezoid

Step-by-step explanation:

None

Answer:

trapezoid

Step-by-step explanation:

Kariz Johnson earns 34850 annually as an engineer. She is single and supports her father. The state tax rate in her state is 3% of taxable income. What amount is withheld yearly for state income tax?

Answers

Answer:

The amount withheld yearly for state income tax is 1045.50

Step-by-step explanation:

Kariz Johnson earns 34850 annually as an engineer.

Suppose, the amount of yearly state income tax is  x

The state tax rate in her state is 3% of taxable income. That means, if the taxable income is 100, then the amount of tax is 3.

So, according to the ratio of "amount of tax" and "amount of income" , the equation will be......

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Thus, the amount withheld yearly for state income tax is 1045.50

What is 35/21 in lowest terms?

Answers


to simplify the fraction you must first find the number that goes into both numbers, in which is 7;

So divide both the numerator and the denominator by 7;

35 ÷ 7 = 5

21 ÷ 7 = 3

So your final answer would be;

35/21 = 5/3 = 1 2/3 (in simplest form)
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