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nalin [4]
3 years ago
6

An appliance store sells lamps at $95.00 for two. A department store sells similar lamps at five for $250.00. Which store sells

at a better rate? How much better?
Mathematics
1 answer:
snow_tiger [21]3 years ago
5 0

Answer:

Appliance store has better rate than department store.

Step-by-step explanation:

Appliance store gives 2 for $95

So price of 1 will be = 95/2 = $47.5

Department store sells 5 for $250

So price of 1 will be = $250/5 = $ 50

So as a buyer we are in profit when buy from appliance store because we are at a profit of $2.5 per lamp.

I hope it will help you!

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Is a simple random sample is valid true or never true or always or sometimes
hodyreva [135]
Sometimes because it might not always be true
3 0
3 years ago
The formula T= 2pi sqrt(L/32) relates the time, T, in seconds for a pendulum with the length, L, in feet, to make one full swing
tester [92]

The length of pendulum is 2.485 feet

<h3><u><em>Solution:</em></u></h3>

Given that,

The formula T= 2pi sqrt(L/32) relates the time, T, in seconds for a pendulum with the length, L, in feet, to make one full swing back and forth

<u><em>Therefore, the given formula is:</em></u>

T=2\pi \sqrt{\frac{L}{32} }

We have to find the length of pendulum that makes one full swing in 1.75 seconds

So the modify the given equation to find "L"

T=2\pi \sqrt{\frac{L}{32} }\\\\ \sqrt{\frac{L}{32} }=\frac{T}{2 \pi}\\\\\text{Taking square root on both sides }\\\\\frac{L}{32} = \frac{T^2}{4 \pi^2}\\\\L = \frac{T^2}{4 \pi^2} \times 32\\\\L = \frac{T^2}{\pi^2 } \times 8

Substitute T = 1.75 seconds and \pi = 3.14

L = \frac{1.75^2}{3.14 \times 3.14} \times 8\\\\L = \frac{3.0625}{9.8596} \times 8\\\\L = 2.485

Thus length of pendulum is 2.485 feet approximately

7 0
4 years ago
Jeremiah is saving money for a tutoring job after the first 3 weeks he saved 135$ assume the situation is proportional use the u
Vikentia [17]
135/3= 45

Equation: 45w=s

45(8)= 360

Jeremiah saved $360.

Hope this helps!
3 0
3 years ago
Read 2 more answers
Which equation can be used to find B in the triangle below?
WINSTONCH [101]

9514 1404 393

Answer:

  (b)  tan B = 8/6

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the relevant relationships:

  Cos = Adjacent/Hypotenuse

  Tan = Opposite/Adjacent

Then angle B is involved in tangent and cosine relationships this way:

  tan B = 8/6 . . . . . . matches 2nd choice

  cos B = 6/10 . . . . . matches no choices

_____

<em>Additional comment</em>

Both of the offered cosine choices give a cosine value that is greater than 1. The cosine of a real angle is never greater than 1, so those can be rejected immediately.

8 0
3 years ago
Represent the following expressions as a power of the number a (a≠0):
Ivahew [28]

Answer:


Step-by-step explanation:

1) (a^3)^{-2}  = a^{-6}\\

2) (a^{-1} * a^{-2} )^{-3} = (a^{-1 + (-2)})^{-3} }=a^{-9}

3) ((a^{2})^{-2})^{2}=(a^{-4})^{2}=(a^{-8})

4) (a*a)^{2} =  (a^{2})^{2}=a^{4}

8 0
3 years ago
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