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3 years ago

The electric heaters, in a 240 volt electric furnace, draw 40 amps of current. What is the total KW rating of the heaters?

Mathematics

1 answer:

expeople1 [14]3 years ago

3 0

9514 1404 393

Answer:

9.6 kW

Step-by-step explanation:

The product of volts and amps is watts. Here, that product is ...

(240 V)(40 A) = 9600 W

1000 W is 1 kW, so this quantity is 9.6 kW

This tells the power consumption. The "rating" may be different.

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A shipment to a warehouse consists of 500 PS4. The manager chooses a random sample of 50 PS4 and finds that 3 are defective. How

crimeas [40]

Answer:

30 PS4's

Step-by-step explanation:

The manager chose 50/500 PS4's to sample

3/50 were defective

To find how many were defective in all 500, we multiply the fraction by a number that makes the 50 (the sample), into a 500(the total).

That number is 10

Whatever multiplication you do to the bottom of a fraction, you do to the top

3*10 / 50*10

30 / 500 are likely to be defective

7 0

3 years ago

Read 2 more answers

HELPPP!!! question 2,3,4

Ivan

Answer:

Answer 1: 85

Answer 2: c

Answer 3: 15

Step-by-step explanation:

Simple subtraction makes the trick.

4 0

3 years ago

Read 2 more answers

The width of a rectangle is the length minus 7 units. The area of the

AleksandrR [38]

Answer:

8 units

Step-by-step explanation:

here's your solution

=> let the length of rectangle be X

=> then width = x - 7

=> area = 8units

=>> area = length*width

=> area = x (x-7) = 8

=> x^2 - 7 = 8

=> now, x^2 - 7x - 8 = 0

=> factories the above equation by middle term split

=> x^2 - 7x - 8

=> x^2 - 8x + x - 8

=> take the common

=> x(x - 8) + 1(x - 8)

=> (x + 1) (x - 8)

neglect (x + 1) because this will in negative for X

=> x - 8 = 0

=> x = 8

=>so, x = 8

=>length = 8 units

3 0

3 years ago

Please help me with this

Kisachek [45]

All you need to do is replace the variables with the numbers given.

t=9 & u=11

3+ 11t - 9u

3+ 11(9)-9(11)

3+ 99 - 99

The 99's cancel each other out, so you are left with 3.

The answer is 3.

7 0

3 years ago

Read 2 more answers

1. The Fold-N-Go box factory makes boxes that hold 1 candle. The boxes measure 1 3 1 3 9 inches.

svet-max [94.6K]

Answer:

1. 360 cubic inches

2.(a)360 Cubic Inches, the owner is wrong

(b)6 in X 1 in X 1 in.

Step-by-step explanation:

1. Dimension of the box

Length=9 inch

Width=1 inch

Height=1 inch

Volume=LWH

=9*1*1 =9 Cubic Inches

Volume of the stack( of 40 candles)

=40*9

=360 Cubic Inches

2. Dimensions of Ella' Box are:

Length=10 inch

Width=6 inch

Height=6 inch

Volume=LWH

=10*6*6

=360 Cubic Inches

(a)The owner is not correct. The Volume of Ella's box is equal to the volume of the stack.

(b)Since the Width of the box is 6 Inch, the owner could cut the boxes into dimensions of 6 inX1 inx1 in.

It means each level will contain

(6*10) candles.

There will be 6 layers which equals the exact volume of Ella's box.

5 0

4 years ago