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den301095 [7]
3 years ago
14

PLEASE HELP!!!!!!!

Mathematics
1 answer:
GuDViN [60]3 years ago
7 0
You see how the km/h went down by 10 so what you do is you use the variables like x or z
For part b it's easy if 9 hours is 4 then you do half of 4 is 2 And there's your
Answer.
Hope this was helpful my English not very god I'm from sweden.
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Examine this system of linear<br> equations.<br> y – 3x=-2,<br> y = 4
Verdich [7]

Answer:

2, 4

Step-by-step explanation:

Ok so for this you have to substitute. y=4 so you put a 4 where the y is. This becomes

4 - 3x = -2 We can already rule out (2,2) and (4,2) Why? Because the y is not a 4. So it’s gonna be either (0,4) or (2,4). Now, we have to find x. We have to isolate it. You do this by subtracting 4 from both sides.

4 - 4 - 3x = -2 - 4 Now Simplify

-3x = -6 Why -6? Because you can’t subtract a positive from a negative so it becomes -2 + -4. Since they are both negatives, you just add them together, then put the negative sign.

Now divide -3 from both sides. Which becomes

x = 2

4 0
4 years ago
Read 2 more answers
Two congruent 30-60-90 triangles are placed,as shown,so that they overlap partly and their hypotenuses coincide. If the hypotenu
Ede4ka [16]

Answer: The area common to both triangle is 31.77 sq. cm.

Step-by-step explanation:

Since we have given that

30-60-90 triangles are placed.

So, the ratio of sides would be

1:\sqrt{3}:2

Since Hypotenuse = 12 cm

So, it becomes,

2x=12\\\\x=\dfrac{12}{2}=6

So, Base would be

x=6\ cm

and Perpendicular would be

\sqrt{3}x=6\sqrt{3}

So, Area common to the both triangles would be

\dfrac{1}{2}\times base\times height\\\\=\dfrac{1}{2}\times 6\times 6\sqrt{3}\\\\=18\sqrt{3}\\\\=31.177

Hence, the area common to both triangle is 31.77 sq. cm.

4 0
3 years ago
Which characteristics best describe a right scalene triangle? I. Two sides meet at a 90° angle. II. Two side lengths are equal.
Alisiya [41]

Answer:

1

1V

Step-by-step explanation:

8 0
3 years ago
6. Select all values of x for which f(x) = g(x).<br> A.0<br> B. 1<br> C.-3<br> D.4
Sati [7]
The answer would be A
6 0
3 years ago
Use Euclid’s Ladder (or a factor tree) to write the prime factorization.
Veseljchak [2.6K]

Answer:

64

Step-by-step explanation:

the answer is 64 hope this helps

5 0
3 years ago
Read 2 more answers
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