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masya89 [10]
3 years ago
15

Need help with this (Show work pls!!)

Mathematics
1 answer:
weeeeeb [17]3 years ago
5 0

Answer:

It will take 7 hours for car B to catch up to Car A.

Step-by-step explanation:

So if you write the the two equations out:

Car A=70x\\Car B= 90x-140

You'll want to assume that x is how many hours and y is how many km.

The reason car B has, -140, is because car A is in front of it by two hours and in those two hours it reached 140km. Meaning that Car B is starting at 140 km behind Car A.

If you graph these two equations out you'll realize that they intersect at the point (7, 490). Meaning that Car B caught up with Car A after 7 hours and both cars had traveled 490km.

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abruzzese [7]

Answer:

It's undefined

Step-by-step explanation:

That symbol is undefined

3 0
3 years ago
Determine if they are congruent. State how they are.
Doss [256]

\huge \bf༆ Answer ༄

The Correct choice is ~ D

  • \textsf{Not enough information }

The given triangles are not congruent, because they they just have all their corresponding angles equal to one another, so we need more information ~

5 0
2 years ago
The square ABCD has side length 20 cm,
bogdanovich [222]

Answer:

AE=22.4

Step-by-step explanation:

BE is 1/2 of BC

BC is 20 cm                 All sides of a square are equal

BE = 1/2 BC                  Property of a midpoint.

BE = 10

Now just use Pythagorus

AB^2 + BE^2 = AE^2

AE^2 = 20^2 + 10^2   Perform the sqrs

AE^2 = 400 + 100      Add the terms

AE^2 = 500                Take the square root of both sides

√AE^2 = √500

AE = 22.36

AE ≈ 22.4

6 0
3 years ago
Help help plss:(((((
kozerog [31]
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