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xenn [34]
3 years ago
13

Zoey took 2.5 hours to bike the 60 km from her house to the beach. It took her 3.5 hours to bike the same distance back to her h

ouse. What was Zoey's average speed? Enter your answer into the box.
Mathematics
1 answer:
Nesterboy [21]3 years ago
5 0

Answer:

  20 km/h

Step-by-step explanation:

Zoey rode a total of 120 km (there and back) in a total time of 6 hours (=2.5+3.5). Her average speed is given by ...

   speed = distance/time = (120 km)/(6 h) = 20 km/h

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ozzi
Solve by substitution

\sf{y=-x-1}
\sf{y+x=3}

Just plug in y=-x-1 into y+x=3

So we get:

\sf{(-x-1)+x=3}

Simplify that:

\sf{-1=3}

And since that is not true, that means this system of equations has no solutions!
6 0
2 years ago
A bicyclist covered 5/7 of his route and an additional 40 miles. He has yet to cover 118 miles less than 0.75 of his route. How
Liula [17]

Answer:

168 miles.

Step-by-step explanation:

5/7x+40+0.75x−118=x

Step 1: Simplify both sides of the equation.

5/7x+40+0.75x−118=x

5/7x+40+0.75x+−118=x

(5/7x+0.75x)+(40+−118)=x(Combine Like Terms)

1.464286x+−78=x

1.464286x−78=x

Step 2: Subtract x from both sides.

1.464286x−78−x=x−x

0.464286x−78=0

Step 3: Add 78 to both sides.

0.464286x−78+78=0+78

0.464286x=78

Step 4: Divide both sides by 0.464286.

0.464286x/0.464286=78/0.464286

x=168

6 0
2 years ago
Can anyone help me out? Steps would be useful but not needed. Its Trig-Missing Sides.
Hitman42 [59]

Answer:

10.3 units

Step-by-step explanation:

Recall: SOHCAHTOA

Reference angle = 69°

Side length Opposite to reference angle = x

Hypotenuse length = 11

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Sin 69 = Opp/Hyp

Substitute

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5 0
3 years ago
62,400 is what percentage of 156,000
STatiana [176]
62400 is what percent of 156000 
<span>= 62400 / 156000 </span>
<span>= 0.4 </span>

<span>Converting decimal to a percentage: </span>
<span>0.4 * 100 = 40%</span>
5 0
3 years ago
Read 2 more answers
Find the area. simplify your answer.
PolarNik [594]

Answer:

The area is:

2 {x}^{2}

Step-by-step explanation:

Area of this figure is simply the product of the base and the height, as it just happens to be a slanted or inclined rectangle.

Therefore:

a = 2x (x) = 2 {x}^{2}

5 0
3 years ago
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