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Ivan
3 years ago
14

How is the percent efficiency of a machine determined?

Mathematics
2 answers:
Stels [109]3 years ago
8 0

The answer is B. I just answered this question earlier!

Archy [21]3 years ago
7 0

Answer:

i need the ansrew too

Step-by-step explanation:

hehe

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A nail cost$.008 How much would 781 nails cost? Round to the nearest hundredth
shutvik [7]

$6.25

0.008x781 is 6.248, so you must round to 6.25

4 0
3 years ago
You are serving bratwurst and hamburgers at a picnic. You want at least 3 brats or hamburgers for each of your 50 guests. Brats
Greeley [361]
3 x 50 = 150
150 x 1.25 = 187.5
If you were to buy just brats, you would spend $187.50. So, you would have a spare $12.50, which could buy you 8 more.

3 x 50 = 150
150 x 0.95 = 142.5
If you were to buy just hamburgers, you would spend $142.50. So, you would have a spare $57.50, which could buy you 60 more.
5 1
2 years ago
What is the sign of the product (−2)(4)(−6)(−3)?
Alexeev081 [22]

the answer is A. as - x - = +


7 0
3 years ago
Read 2 more answers
I rlly need this answer pls help
mina [271]

Answer:

d

Step-by-step explanation:

155$ after 3 months means 45$ less. 45$ divided by 3 (the number of months) =15

that means she spends 15$ per month

6 0
2 years ago
T a linen sale Mrs. Earle bought twice as many pillowcases for $2 each as sheets for $5 each. If she spent less than $40, not in
Anettt [7]
For this case, the first thing we must do is define variables:
 x: number of pillowcases
 y: number of sheets
 We now write the system of equations:
 2x + 5y = 40
 x = 2y
 Solving the system we have:
 x = 8.9
 y = 4.4
 Answer:
 
The maximum number of pillowcases she could have purchased is:
 
x = 8 (spent less than $ 40)
3 0
3 years ago
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