MATHEMATICS HIGH SCHOOL

Pls help with Question 11.
I need to submit it by tmr

Answers

Answer 1

Answer:

Answer: 81.85 km/hr

Converting m/sec into km/hr, 25 m/sec = 90 km/hr

Average =

Time = 50/90 = 5/9 hr

next 120 km at an average speed of 80km/h

=> Time = 120/80 = 3/2 hr

last part of its journey at an average speed of 90km/h in 35 Minutes

time = 35 minutes = 35/60 hr = 7/12 hr

Distance covered = 90 * 7 /12 = 105/2 km

Total Distance = 50 + 120 + 105/2 = 435/2 km

Total time = 5/9 + 3/2 + 7/12 = ( 20 + 54 + 21) /36 = 95/36

Average speed = (435/2)/(95 /36) = 432 * 18 /95 = 81.85 km/hr

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Susana drove 125 miles in 5 hours. What is her average speed in miles per hour? a) 25 mph b) 30 mph c) 35 mph d) 40 mph

Answers

Answer: a) 25 mph

Explanation:

To find the average speed, we need to divide the total distance by the total time. Here, we have Susana driving a total distance of 125 miles with a time of 5 hours.

We can calculate the average speed by dividing the total distance driven by the total time driven.
125 miles / 5 hours = 25 miles/hour

This gives us answer option a, the average speed of Susana is 25 mph.

Answer:

The average speed is 25 mph

Step-by-step explanation:

We can calculate average speed by dividing the distance and the time interval:

average speed = (total distance traveled/time interval)

= (125 mi/5 hours)

= 25 mph

Her average speed is 25 mph.

a) 25 mph

Which concept is used to prove that the opposite sides of a parallelogram are congruent? congruent rectangles similar rectangles congruent triangles similar triangles

Answers

The correct answer is:

Congruent triangles.

Explanation:

Consider the top and bottom sides of the parallelogram parallel lines. The diagonal of the parallelogram would be the transversal.

The diagonal splits each opposite angle into two pieces. Using the diagonal as a transversal means we have two pairs of alternate interior angles; this means each pair is congruent. This gives us two congruent angles in two triangles.

The diagonal of the parallelogram is congruent to itself. This gives us two angles and the side between them; this is the angle-side-angle, or ASA, congruence theorem. This proves that the two triangles are congruent.

Since the two triangles are congruent, the corresponding parts of each triangle would be congruent; this means the opposite sides of the parallelogram are congruent.

I think it's congruent triangles

Which place is home of the first known written code of law? a. Egypt
b. Mesopotamia
c. Both
d. Neither

Answers

the answer should be B. Mesopotamia

the answer to your question is b. mesopotamia

18x - 14= -14 how can I solve that equation

Answers

18x-14=-14
Add 14 to both sides
Final answer: 18x=0

This is as far as your equation will let you go because you can never divide by 0 in ANY problem.

Divide -14 two -14 which will give you one then bring down 18 eggs and one and divide 18 X buy one I would give you 18 and then X equals 18

Gary earned a gross pay of $1,047.30 last week. Using the fact that Social Security tax is 6.2% of gross pay, determine the amount of Social Security tax deducted from Gary’s gross pay.