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2 years ago

During a 20% off sale, the sale price of a bluetooth radio was $33.96. What was the regular price?

Mathematics

1 answer:

SVETLANKA909090 [29]2 years ago

5 0

20% of the regular price was off.

So 80% of the regular price stayed on.

$33.96 was that 80% of the regular price.

(0.8) · (regular price) = $33.96

Divide both sides by (0.8).

Regular price = ($33.96) / (0.8)

Regular price = $42.45

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URGENT!!!! Find the m<2.

Leto [7]

Answer:

Hello! :) I hope I’m correct!!

Step-by-step explanation:

I think the answer should be the second one.

the angle with the square at the corner is obviously a right angle, 90°. opposite angles have the same angle so opposite to it, angle 3 is also 90°. then add the angle 3 and the given angle (23°). 90°+23°=113° then subtract it to 180° (since a straight line is 180°). 180°-113°=67°

The steps:

To solve m< 2,

$m< 2 = 180 - (90 + 23)$

$m< 2 = 180 - 113$

$m< 2 = 67$

<h3>Therefore, I think the answer should be 67 (second choice)</h3>

i’m not really sure if this is the answer, but I hope this was helpful!! :)

if you have any questions about these steps, feel free to ask!

by: BrainlyAnime! ^-^

~Thank you!! Have a great day! ~

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3 years ago

What is the answer for 5x1+2? I

tekilochka [14]

Answer:

Step-by-step explanation:

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2 years ago

The lifetime of a certain type of battery is normally distributed with mean value 15 hours and standard deviation 1 hour. There

KIM [24]

Answer:

If the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 15

Standard Deviation, σ = 1

Sample size = 4

Total lifetime of 4 batteries = 40 hours

We are given that the distribution of lifetime is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling:

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{1}{\sqrt4} = 0.5$

We have to find the value of x such that the probability is 0.05

P(X > x) = 0.05

$P( X > x) = P( z > \displaystyle\frac{x - 40}{0.5})=0.05$

$= 1 -P( z \leq \displaystyle\frac{x - 40}{0.5})=0.05$

$=P( z \leq \displaystyle\frac{x - 40}{0.5})=0.95$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 40}{0.5} = 1.64\\x = 40.825 \approx 40.83$

Hence, if the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.

8 0

3 years ago

Please help me answer this thank you

nexus9112 [7]

Scale for y - 1:1
Scale for x - 1:10

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3 years ago

Read 2 more answers

The amount of soda dispensing machine pours into a can of soda is normally distributedwith a mean of 12 ounces and a standard de

kaheart [24]

Answer:

0.1056

Step-by-step explanation:

Mean(μ) = 12 ounce

Standard deviation (σ) = 0.2 ounce

P(x<11.75) = ???

Let x be the random variable for the amount of soda a machine will dispense.

Using normal distribution

Z = (x - μ) / σ

Z = (11.75 - 12) / 0.2

Z = (-0.25)/0.2

Z = -1.25

From the normal distribution table

1.28 is 0.3944

Φ(z) is the tabular value of z

Φ(z) = 0.3944

Recall that when Z is negative

P(x<a) = 0.5 - Φ(z)

P(x < 11.75) = 0.5 - 0.3944

= 0.1056

7 0

3 years ago