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ruslelena [56]
3 years ago
9

Two trucks are driving to the same place. The first truck starts 50 miles ahead of the second truck and travels at an average sp

eed of 60 miles per hour. The second truck travels at an average speed of 70 miles per hour. Which graph represents this situation and shows the number of hours it will take for the second truck to pass the first truck?

Mathematics
2 answers:
Marina86 [1]3 years ago
6 0

Answer:

Step-by-step explanation:

Dominik [7]3 years ago
5 0

Well obviously the two bottom graphs don't represent the two trucks meeting. So we can cross those out. Looking at the top two graphs we can tell that the line above is truck #2. In graph 1 it shows the second truck is slowing down which is wrong since that isn't told.

So the answer would be Graph #2

I hope this helps!

-Ayden

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Can someone help me with this!
Stolb23 [73]

Answer:

  2.  x = 18

  3.  x = 7

  4.  missing angles are 73°

Step-by-step explanation:

The simple rules involved here are ...

  • the sum of angles of a triangle is 180°
  • angles forming a linear pair are supplementary (total 180°).

Together, these tell you that the external angle of a triangle has the same measure as the sum of the opposite internal angles. (The third angle is the supplement of the external angle.)

<u>Problem 1</u>

Work shown is correct.

__

<u>Problem 2</u>

Using the above observation, ...

  (5x -11)° + (2x +20°) = (11x -63)°

  7x +9 = 11x -63 . . . . . collect terms, divide by °

  72 = 4x . . . . . . . . . . . add 63-7x

  18 = x

__

<u>Problem 3</u>

The angles of an equilateral triangle are 60°, so that is the measure of the marked angle.

  9x -3 = 60

  9x = 63 . . . . . . add 3

  x = 7 . . . . . . . . .divide by 9

__

<u>Problem 4</u>

You don't need to find the value of x to answer this question. The base angle of an isosceles triangle is the complement of half the apex angle. This comes from the fact that the two base angles are equal measure.

  (apex angle) + 2(base angle) = 180° . . . . sum of angles in isosceles triangle

  (1/2)(apex angle) +(base angle) = 90° . . . divide by 2

  base angle = 90° -(1/2)(apex angle) . . . . .solve for base angle

Filling in the given apex angle value, we get ...

  base angle = 90° -(1/2)(34°) = 73°

Both missing angles are 73°.

7 0
3 years ago
Find the length of a third side of a right triangle
ANTONII [103]
The sides of a right triangle can be found using the Pythagorean Theorem: a^2+b^2=c^2

c is the hypotenuse (the longest side) of the right triangle and a and b are the two other legs. Knowing any two sides of the right triangle, you can find the other using this formula.

Hope this helps!
3 0
3 years ago
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What is 3r³/2r<br>how do I go about solving it <br>thanks​
natulia [17]

Answer:

3r^2 /2

Step-by-step explanation:

r^3 cancels out r in the denominator remaining with r^2 in the numerator.

so 3r^2/2

= 3r^2 /2

6 0
3 years ago
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Israel added $120 to his savings. This added amount represents 1/6 of his total savings. If s represents the total savings, whic
oee [108]

Calculista Ambitious

the correct question in the attached figure


Let

s----------> total savings


case a) Israel added $80 to his savings


we know that

80=(1/8)*s-------> multiply by 8 both sides------> s=$640


the answer case a) is

the equation is 

80=(1/8)*s


case b) Israel added $120 to his savings


we know that

120=(1/8)*s-------> multiply by 8 both sides------> s=$960


the answer case b) is

the equation is 

120=(1/8)*s




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alexandr402 [8]

Answer:

(2-c,y)

Step-by-step explanation:

idk this is what algebra nation told me so yeah

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