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marshall27 [118]
3 years ago
6

2 (4x+5)=90? can someone help?

Mathematics
2 answers:
Kazeer [188]3 years ago
6 0
So first you multiply 2 and 4x to get 8x. Then you multiply 2 and 5 to get 10. So the problem will look like:

8x+10=90

Then you subtract 10 on both sides of the problem to get:

8x=80

And then divide 8 on both sides to get

x=10
Nikitich [7]3 years ago
4 0
8x+10=90
-10. -10
8x=80
divide both sides by 8
x=10
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Let E = {(x, y) e R2|xy > 0}. Determine whether E is a subspace of R2 . X3
gayaneshka [121]

Answer:

E is not a subspace of \mathbb{R}^2

Step-by-step explanation:

E is not a subspace of  \mathbb{R}^2

In order to see this, we must find two points (a,b), (c,d) in  E such that (a,b) + (c,d) is not in E.

Consider

(a,b) = (1,1)

(c,d) = (-1,-1)

It is easy to see that both (a,b) and (c,d) are in E since 1*1>0 and (1-)*(-1)>0.  

But (a,b) + (c,d) = (1-1, 1-1) = (0,0)

and (0,0) is not in E.

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5 0
3 years ago
Find the value of x please.
igor_vitrenko [27]

Answer:

83

Step-by-step explanation:

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7 0
2 years ago
Read 2 more answers
What is the LCM of 3,4, and 7?
alukav5142 [94]

Answer:

The lcm is 84

Step-by-step explanation:

3: 3,6,9,12,15,18,21,24,27,30,33,36,39,41,44,47.........84

4: 4,8,12,16,20,24,28,32,36,40,44........84

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4 0
2 years ago
Type A coffee costs Bill 4.30
avanturin [10]
4.30A+5.70B=855.40
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A=168-B
substitute

4.30(168-B)+5.70B=855.40
4.30*168-4.30B+5.70B=855.40
1.40B =855-4.30*168
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5 0
3 years ago
What is the remainder of 42, 325 divided by 47 ?
aniked [119]

Answer:

remainder 25

Step-by-step explanation:

if 42,325 is divided by 47the result is 25,

firstly divide 42,325 by 47, you will see that it can only divide 42,325 which is 900 without any remainder,then the 900 is the whole number and 25 is remaining from the subtraction of 42,325-42,300=25 ,and 25 has to be divided by 47 but it is not up to 47,then we have it as a remainder,

so 25 is the remainder

6 0
2 years ago
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