1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lbvjy [14]
2 years ago
15

Willie left the mall and traveled toward the town hall at an average speed of 40 km/h. Gabriella left two hors later and travele

d in the opposite direction with an average speed of 70 km/h. Find the number of hours gabriella needs to travel before they are 410 km apart.
Mathematics
1 answer:
mezya [45]2 years ago
5 0

Answer:

<em>3 hours</em>

Step-by-step explanation:

Given that:

Average speed of Willie = 40 km/h

After 2 hours, Gabriella traveled in opposite direction at an speed of 70 km/h.

After some time, they are 410 km apart.

To find:

Number of hours = ?

Solution:

For the first two hours, Willie traveled alone.

Formula for distance:

Distance = Speed \times Time

Distance traveled in two hours by Willie = 40 \times 2 = 80\ km

Now, they both travel in opposite directions.

So the relative speed is = 40 + 70 = 110 km/h

The distance traveled by them = 410 - 80 = 330 km

Time\ taken = \dfrac{330}{110} = 3\ hours

Therefore, the time taken is <em>3 hours.</em>

You might be interested in
3) Scenario 1 Scenario 2 y = 50x x is time in hours y is distance in miles Compare the scenarios and determine which shows the g
Olegator [25]

Answer:

Option A.

Step-by-step explanation:

Consider the below figure attached with this question.

Scenario 1 represented by the graph.

From the graph it is clear that the line passes through the points (1,60) and (2,120).

Slope of the line is

y=\dfrac{y_2-y_1}{x_2-x_1}

y=\dfrac{120-60}{2-1}=60

The slope of line is 60. It means the speed is 60 miles per hour.

Scenario 2 defined by the equation,

y=50x

If an equation defined as y=mx+b, then m is slope and b is y-intercept.

m=50

The slope of line is 50. It means the speed is 50 miles per hour.  

The slope of Scenario 1 is greater than slope of Scenario 2. So, the Scenario 1 shows the greater speed.

Hence, the correct option is A.

6 0
2 years ago
Read 2 more answers
Tamara says she used the GCF to factor the expression 21x + 56xy as 7(3x + 8xy). Is she correct? Explain.
coldgirl [10]

Answer:

Tamara incorrectly factored the whole expression.

Step-by-step explanation:

Note that

•21x=3·7·x;

•56xy=2·2·2·7·x·y.

Mark in bold all common factors, then GCF(21x,56xy)=7·x=7x.

Thus,

21x+56xy=7x(3+8y).

Hence, Tamara correctly found the GCF of numbers 21 and 56, but incorrectly factored the whole expression.

6 0
2 years ago
9. The sum of 10 and 7 times a number is 59. What is the<br> number? (Use n as the variable.)
PSYCHO15rus [73]
10+7n=59
7n=59-10
7n=49
n=49/7
n=7
4 0
3 years ago
Read 2 more answers
the store where henry's family. shops sold 10 3 times as many pounds of corn as henry's family bought. the weight of the corn is
saveliy_v [14]
Times it by 3 and see what u get try see if it work
7 0
3 years ago
Write an inequality (you must be older than 13 to play basketball league
marshall27 [118]
13+x=x because 13 plus x will be a good number so you can be able to join the basketball league
4 0
3 years ago
Read 2 more answers
Other questions:
  • The triangle shown in the diagram is going to be dilated by a scale factor of 1 3 . What is the length of the new side that corr
    15·1 answer
  • If a diagram shows a cube sliced by a plane horizontally through the solid what is the shape of the cross-section
    11·1 answer
  • A recipe for 9 banana dash nut muffins calls for 1 cup of flour. The number of muffins that can be made varies directly with the
    11·1 answer
  • I need help. Of the make sense of the problem section. Please
    12·1 answer
  • Answer this and I’ll make you Brainly!
    8·2 answers
  • The difference of a number and 10 is equal to eleven times the number
    11·1 answer
  • Nick dreamed that he was kidnapped
    9·2 answers
  • What is a solid figure without any bases and with only one curved surface
    13·1 answer
  • The workers in a factory are organized into five-person teams. When conducting a work-environment survey, a researcher randomly
    10·1 answer
  • Two dice are thrown together find the probability of getting
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!