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Butoxors [25]
3 years ago
7

David earns $15 per hour working at a bowling alley. This week, he earned $180, how many hours did he work? Choose the correct e

quation:
Mathematics
2 answers:
vovangra [49]3 years ago
8 0

Answer:12 hrs

Step-by-step explanation: $15 per hour -> $180/$15 = 12 hours

spayn [35]3 years ago
6 0

Answer:

1 hour = 15$

? = 180$

and we use criss cross.

1 hour×180$ = ?×15$

next we divide both of side by 15$.

then cancl $ by$ and we divide 180 to 15 and

we gain 12 and we add hour

the fainal result is 12 hour.

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f(1) = (3(1)+7)²
f(1) = (3+7)²
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Julio started biking to the park traveling 8 mph, after some time the bike got a flat so Julio walked the rest of the way, trave
USPshnik [31]

Answer:

Julio travel <u>3 hours</u> by biking and <u>4 hours</u> by walking.

Step-by-step explanation:

Given:

Julio started biking to the park traveling 8 mph, after some time the bike got a flat so Julio walked the rest of the way, traveling 7 mph.

If the total trip to the park took 7 hours and it was 52 miles away.

Now, to find the time Julio travel at each speed.

The speed travelled by the bike = 8 mph.

The speed travelled by the walking = 7 mph.

Let the time Julio travel with bike be x.

And the time Julio travel by walking be y.

As, given Julio started biking to the park traveling, after some time the bike got a flat so Julio walked the rest of the way,

Thus, the total time taken:

x+y=7

y=7-x\ \ \ .......(1)

So, the distance travelled by bike:

Speed × time

8\times x=8x

And, the distance travelled by walking:

Speed × time

7\times y=7y

Now, the total distance travelled by Julio:

8x+7y=52

Substituting the value of x from equation (1) we get:

8x+7(7-x)=52

8x+49-7x=52\\\\x+49=52

<em>Subtracting both sides by 49 we get:</em>

x=3.

<em>The time Julio travelled with bike = 3 hours.</em>

Now, to get the time Julio travelled by walking by substituting the value of x:

y=7-x\\\\y=7-3\\\\y=4\ hours.

<em>The time Julio travelled by walking = 4 hours.</em>

Therefore, Julio travel 3 hours by biking and 4 hours by walking.

7 0
3 years ago
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