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4 years ago

For breakfast, Randy had two Egg

1 answer:

8 0

Since the only difference in the two meals is one egg mcmuffin, then the difference in the calorie count has to be due to the mcmuffin. So

750 - 450 = 300 calories for an egg mcmuffin.

Jack's egg mcmuffin and hashbrowns totaled 450 calories. Since we know that an egg mcmuffin is 300 calories, then the hashbrowns have to be

450 - 300 = 150 calories

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| 9. The distance between Town A and Town B was 108 km. A car and a van left Town A at 12 00 for Town B. On reaching Town B, the

Westkost [7]

Answer:

a) Time until both vehicles meet is 1.5 hours after starting at noon. That makes it 1:30PM.

b) Average speed of car is 84 km/h

Step-by-step explanation:

A -----------------------z------------B

Left Speed(km/h) Time

Car: 12PM X

Van: 12PM 60

Car/Van

DistanceCar AB + z

DistanceVan Az

Ratio: (AB+z)/Az = 7/5

Time until both meet = T (in hours)

Distance Car: xT

Distance Van: 60T

====

xT = AB + z

60T = Az

---

(xT/60T)= (7/5)

x = 60(7/5)

x = 84 km/h

=====

Time for car to reach B is: time (hr) = 108 km/(84 km/h)

time = 1.286 hours

Distance for at 1.289 hours is: distance (km) = (60 km/h)*(1.286 h)

distance = 77.14 km

At 1.286 hours, the car reverses direction. The van is (108 km - 77.14 km) or 30.86 km away.

Add the distances travelled by both vehicles after the car reverses direction at 1.286 hours. The sum will be 30.86 km when they meet, at time of T.

Car Distance + Van Distance = 30.86 km

T(84 km/h) + t(60 km)

They meet when they are 0 km apart, which can be modeled with the following equation:

Van travel Distance - Car Travel Distance = 0 starting at 1.286 hr.

Let t be the time after 1.286 hours that both vehicles meet/collide.

t*(60 km/h) + t(84 km/h) = 30.86 km

t(60+84) = 30.86 km

t(144 km/h) = 30.86 km

t = 0.2143 hr

Total time until the car and van meet is 1.286 hr + 0.2143 hr for a total of 1.50 hours.

=================

a) Time until both vehicles meet is 1.5 hours after starting at noon. That makes it 1:30PM.

b) Average speed of car is 84 km/h

==============

CHECK

Is the ratio of the distance travelled by the car and the van until they meet in the ratio of 7/5?

Car distance is (1.5 hr)(84 km/h) = 126 km

Van distance is (1.5 hr)(60 km/h) = 90.0 km

Ratio is 126/90 or 1.4

Ratio of 7/5 is 1.4

YES

3 0

3 years ago

What is 657 in expanded form?

nikitadnepr [17]

600+50+7 this is 657 in expanded form

7 0

3 years ago

Read 2 more answers

(40s+100t) divid by 10

Olenka [21]

Answer:

=4s+10t

Step-by-step explanation:

4s has no like terms so we divide by 10 and that gives us 4.

100t has no like terms so we divide 100 by 10 that gives us 10. This means that our total answer is (4s+10t). Hope this helped! If it did can I have brainliest thx.

3 0

3 years ago

Determine if these triangles are congruent. If so, state if they are congruent by ASA or AAS.

sertanlavr [38]

Answer:

Sarah is paid $20 an hour at her new job. She wishes to graph her total pay y, as a function of the number of hours, x. She wants to be sure her graph shows her pay for 10 and 20 hours of work.

a. What is a good scale to use for the x-axis? Explain your reasoning.

b. What is a good interval to use for the y-axis? Explain your r

Step-by-step explanation:

3 0

3 years ago

Someone help pls?! Thank youu

Ivenika [448]

Answer:

50 days

Step-by-step explanation:

1/8 pound of weight = 25/4 days

8/8 pound of weight = 25/4 × 8

= 200/4

= 50 days

7 0

3 years ago

Read 2 more answers