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crimeas [40]
3 years ago
10

By what scale factor is the larger container increased? A. 2 B. 2.75 C. 2.25 D. 2.5

Mathematics
1 answer:
lys-0071 [83]3 years ago
4 0

Answer:

I think A, but i'm not the smartest

Step-by-step explanation:

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Ann buys a dress in a sale. The normal price of the dress is reduced by 20%. The normal price is £36.80. Work out the sale price
marshall27 [118]
Hello!

Let's do this step by step!

#1

"Reducing" means to make something smaller, like a discount. So we are reducing the price of the dress by 20%. This means we must first find what 20% of the dress's price is and then subtract that from the price.

#2

36.80 * 20% = 7.36

So, 20% of 36.80 is 7.36. Subtract that: 

#3

36.80 - 7.36 = 29.44

Answer: 

The sale price of the dress is $29.44. 

Good day!
5 0
2 years ago
Need to know Anwser yes or no
matrenka [14]

Answer:

Reflective symmetry over the line y = 4 is No

Reflective symmetry over the line y = 1/7x + 3 is Yes

7 0
2 years ago
The following table lists the frequency distribution for 60 rolls of a die.
Drupady [299]

Answer:

False.................

7 0
3 years ago
Read 2 more answers
Phillip buys 4 pounds of salmon for $27.60. How much did he spend per
Ray Of Light [21]

Answer:

Step-by-step explanation:bnbn

8 0
2 years ago
A heat source transfers 3000 J/sec to a metal part surface. The heated area is circular, and the heat intensity decreases as the
Annette [7]

Answer:

The resulting power density is enough to melt the metal.

Step-by-step explanation:

Given data:

Power = P = 3000 J/sec

diameter = d = 3.5 mm

Solution:

As we Know that Area = A = π r² ---- (1)

where r is radius.

Also Radius =  \frac{diameter}{2}

Putting the values of radius, π = 3.14 in equation 1, we get

A = 3.14 x (\frac{d}{2})²

A = 3.14 x (3.5/2)²

A = 9.62 mm²

As 75% of heat is concentrated in circular area then Power P becomes

P = 3000 J/sec x 75 %

As J/sec = Watt = W and 75 % = 3/4

so P = 3000 W x 3/4

P = 2250 W

As power density is represented by the formula:

Power density = PD = P/A

where P is Power and A is area.

So,

PD = P/A

Putting the values of Power and Area in above equation, we get

PD = 2250 W / 9.62 mm²

PD = 234 W/mm²

So, this power density is sufficient to melt the metal.

8 0
3 years ago
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