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ANEK [815]
3 years ago
5

The sum of two numbers is 28the first number x is three times the second number y

Mathematics
2 answers:
Alex Ar [27]3 years ago
7 0
21 and 7 (((((((*(*(
Mazyrski [523]3 years ago
4 0
Let's try to make two equations.
X+Y=28
Since x is three time y, x=3y. Let's fill that in for x.
3y+Y=28
Let's solve first by combining like terms.
4y=28
28÷4=7=y
Y is 7, so that means x must be 21 since their sum is 28.
So, 21=x and 7=y.
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Answer:

3 divided by 4 is 0.75

Step-by-step explanation:

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The lowest point in Asia is the Dead Sea, which is 396 meters below sea level. The lowest point in the USA is Death Valley, at 8
wlad13 [49]

Answer:

310 metres

Step-by-step explanation:

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3 years ago
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Sketch the line passing through the pair of points and identify the line as having a positive slope, a negative slope, a zero sl
scoundrel [369]

Answer:

line will be horizontal running through (0,2)

Step-by-step explanation:

6,2
1,2
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5 0
2 years ago
When you forget to add the attachment,, r.i.p. ,, what I said before and all that
kati45 [8]
a.
h = 2c - 3

b.
3h + 1.5c = 201

c.
We have a system of equations from part a and b.
h = 2c - 3   (equation 1)
3h + 1.5c = 201   (equation 2)

We use substitution method to solve this system.
Substitute equation 1 in equation 2 to get
3h + 1.5c = 201
>> 3(2c - 3) + 1.5c = 201
>> 6c - 9 + 1.5c = 201
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>> 7.5c = 210
>> c = 210 / 7.5
>> c = 28

Plug this value back in equation 1 to get
h = 2c - 3  
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3 0
3 years ago
Working together, it takes two computers 20 minutes to send out a company's email. If it takes the slower computer 45 minutes to
11Alexandr11 [23.1K]

Answer:

36 minutes

Step-by-step explanation:

Let the productivity of slower computer is x bits/min

That means Slower computer in 45 minutes sends   x*45 bits= company's email

Let the productivity of faster computer is y bits/min

That means that working together slower and faster computers send

x*20+y*20= company's  email or

x*20+y*20=x*45

x*25=y*20

y/x=25/20= 1,25

That means that faster computer sends the mails 1.25 times  faster than slower computer

So faster computer  will need in 1.25 times lees time than slower computer to do this job

45:1.25 =36 min

6 0
3 years ago
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