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Pachacha [2.7K]
3 years ago
12

A local electronics store raised its prices on headphones by 20%. The headphones that Stan wants to buy now cost $36. How much d

id the headphones cost before the price increase?
Mathematics
1 answer:
atroni [7]3 years ago
4 0
You would do 36$ -20% =28.8
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In semiconductor manufacturing, wet chemical etching is often used to remove silicon from the backs of wafers prior to metalizat
Viktor [21]

Answer:

Sample mean for solution 1:  19.27; sample mean for solution 2:  10.32

Step-by-step explanation:

To find the sample mean, find the sum of the data values and divide by the sample size.

For solution 1, the sum is given by:

9.7+10.5+9.4+10.6+9.3+10.7+9.6+10.4+10.2+10.5 = 192.7

The sample size is 10; this gives us

192.7/10 = 19.27

For solution 2, the sum is given by:

10.6+10.3+10.3+10.2+10.0+10.7+10.3+10.4+10.1+10.3 = 103.2

The sample size is 10, this gives us

103.2/10 = 10.32

6 0
3 years ago
19) In the xy-plane, what is the y-intercept of the graph of the equation<br> y=3(x-1)(x+2)?
Dahasolnce [82]

Answer:

- 6

Step-by-step explanation:

Given

y = 3(x - 1)(x + 2) ← expand factors using FOIL

  = 3(x² + x - 2) ← distribute by 3

  = 3x² + 3x - 6

To find the y- intercept let x = 0, thus

y = 3(0)² + 3(0) - 6 = 0 + 0 - 6 = - 6

Thus y- intercept = - 6 ⇒ (0, - 6 )

3 0
3 years ago
Ron walks 22.5 in 5 hours finds his speed<br>​
Lostsunrise [7]

Answer:

his speed would be 4.5 miles per hour

Step-by-step explanation:

if you do the distance divided by the hours you will get the answer.

  22.5/5=4.5

7 0
2 years ago
Which is the solution to the equation 8.25+1/4w=10.75 round to the nearest hundreath if necessary
Oksana_A [137]

Answer: 10

Step-by-step explanation:

8.25+ 1/4w=10.75

1/4 =0.25

w=10

5 0
3 years ago
Read 2 more answers
) Al repartir laminas entre mis amigos, pude darle 5 a
prisoha [69]

Answer:

Había cinco amigos al principio y siete laminas en total. (Using google translate)

Step-by-step explanation:

pude darle 5 a cada = 5 amigos

5 a cada uno y me sobran 2 amigos más, por lo que las repartí de nuevo y pude darle = siete laminas

8 0
3 years ago
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