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Fynjy0 [20]
3 years ago
6

An elevator weighing 15,000 newtons is raised one story in 50 seconds. If the distance between stories is 3.0 meters, how much p

ower is required of the motor? 750,000 W 45,000 W 5,000 W 900 W
Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
4 0

Answer:

900 W

Step-by-step explanation:

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Your math teacher tells you that the next test is worth 100 points and contains 38 problems muitiple choices are worth 2 points
jeka94

Answer:

multiple choice have 30 questions

word problems have 8 questions

Step-by-step explanation:

x=multiple choice. y=word problems

2x+5y=100 ---eq1

x+y=38 ---eq2

y=38-x ---eq3

substitutet eq3 into eq1

2x+5(38-x)=100

2x+(-5x)+190=100

2x-5x=100-190

-3x=-90

x=-90/-3

x=30

substitute x to eq3

y=38-(30)

y=8

multiple choice have 30 questions

word problems have 8 questions

8 0
2 years ago
23. The solution set for x – 13=- 144x
kvasek [131]

Answer:X=13/145

Step-by-step explanation:

4 0
2 years ago
Solve 3x+2y=4 4x+3y=7 algebraically
Leona [35]
Step 1. Multiply first equation with -3 and the second one with 2. You'll get:
\left \{ {{-9x-6y=-12} \atop {8x+6y=14}} \right.

Step 2. Add both equations together. You'll get:
-x=2, which gives x = -2

Step 3. Replace x = -2 in the first equation and calculate y.
3(-2)+2y=4\\
y=\frac{4+6}{2}=5

The solution is: x=-2, y=5
8 0
3 years ago
72.4 divided by 4 please help!!!!
wariber [46]

Answer:

18.1

hope it helps mate

8 0
3 years ago
Read 2 more answers
In a survey, 200 people were polled about whether they preferred spending their free time playing sports, watching a movie, or r
Rama09 [41]
A) 25% of males preferred playing sports.

Explanation) .25 is the same is 25%.

B) 25% of the people surveyed preferred reading a book.

Explanation) You have to add up how many males and females rather
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C) 70 females were surveyed out of 200 people. 

Explanation)  Add up .15 + .5 + .15 to get .35.  Put .35 multiplied by 200 to                            get 70.



8 0
3 years ago
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