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spayn [35]
3 years ago
7

Which matrix is matrix b?

Mathematics
1 answer:
adell [148]3 years ago
7 0
I think it is B sorry if wrong
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Please help! I really need it
nirvana33 [79]
Add all sides.
5x+2+3x+8+4x-1
Combine like terms
12x+9
Subtract nine to get it on the other side of the equal sign
12x= -9
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x=-9/12
Simplify
x=-3/4
Plug in x.
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What is the value of x?
Marysya12 [62]
A triangle always adds up to 180 degrees:

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Alex’s father is 5 times older than Alex and Alex is twice as old as his brother Nick who is 5 years old. How old is Alex's fath
KengaRu [80]
The answer to this question is 50.
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3 years ago
Read 2 more answers
Jane travels7 mph less than2 times as fast as Mike. Starting at the same point and traveling in the same direction, they are198
Sphinxa [80]

Let:

Vj = Speed of jane

Vm = Speed of mike

d = distance

t = time

Jane travels 7 mph less than 2 times as fast as Mike, therefore:

Vj = 2Vm - 7

Remeber:

distance = speed*time

Distance traveled by mike:

d=Vm*t = Vm*6

Distance traveled by jane:

d + 198 = Vj*6

where:

Vj = 2Vm - 7

d + 198 = (2Vm-7)*6

Now, let:

d=Vm*6 (1)

d + 198 = (2Vm-7)*6 (2)

Replace (1) into (2)

6Vm + 198 = 12Vm - 42

Subtract 6Vm from both sides:

6Vm + 198 - 6Vm = 12Vm - 42 - 6Vm

198 = 6Vm - 42

Add 42 to both sides:

198 + 42 = 6Vm - 42 + 42

240 = 6Vm

Divide both sides by 6:

240/6 = 6Vm/6

40 = Vm

Vm = 40mph

Replace Vm into this equation Vj = 2Vm - 7 :

Vj = 2(40) - 7 = 80 - 7 = 73mph

4 0
1 year ago
Been trying this for too long thanks
11Alexandr11 [23.1K]

Answer:

It's 1.6 and 0.8

Step-by-step explanation:

7 0
3 years ago
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