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Andreas93 [3]
3 years ago
12

Starting at home, Emily traveled uphill to the hardware store for 60 minutes at just 6 mph. She then traveled back home along th

e same path downhill at a speed of 12mph. What is her average speed for the entire trip from home to the hardware store and back?
Mathematics
2 answers:
Aleks [24]3 years ago
4 0

Answer:

should be 9 if im correct!! lmk if not


Step-by-step explanation:


saveliy_v [14]3 years ago
3 0
At a 6mph speed, it took Emily 60m

If she returns at a speed of 12mph, it'll take half the time so 30m.

The total of time she took to travel is
30m+60m=90m

the 6mph part represents 2/3 of the time
and the 12mph part reprensents 1/3 of the time

So then
(2/3•6)+(1/3•12)=8

So Emily has an average of 8mph for the entire ride
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Which statement is NOT a step used when constructing an inscribed hexagon?
den301095 [7]

Answer:

Swing two arcs above and below the radius.

Step-by-step explanation:

We want to determine which statement is NOT a step used when constructing an inscribed hexagon?  

1. Swing two arcs above and below the radius. False

2. Draw a radius of the circle using a straightedge.  True

3. Place the compass on the point where the circle and radius intersect. True

4. Swing an arc the length of the radius from the point on the circle. True

The first choice is the correct answer.

3 0
3 years ago
Nd the 52nd term and the term named in the problem <br>40, 140, 240, 340, ...<br>Find a 32​
Galina-37 [17]

Answer:

5140 and 3140

Step-by-step explanation:

Note there is a common difference d between consecutive terms in the sequence, that is

d = 140 - 40 = 240 - 140 = 340 - 240 = 100

This indicates the sequence is arithmetic with n th term

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 40 and d = 100, thus

a_{52} = 40 + (51 × 100) = 40 + 5100 = 5140

a_{32} = 40 + (31 × 100) = 40 + 3100 = 3140

5 0
3 years ago
What is the remainder when 2x^3−9x^2+11 is divided by x−6?
zheka24 [161]

Answer:

119

Step-by-step explanation:

Given f(x) divided by (x - h) then the value of f(h) is the remainder, thus

f(6) = 2(6)³ - 9(6)² + 11

     = 2(216) - 9(36) + 11

     = 432 - 324 + 11

     = 119 ← remainder

8 0
2 years ago
I don't know number 10
yulyashka [42]
78500 is ur answer : ) : ) : )
3 0
3 years ago
What is the value of t? Points D and E are midpoints of the sides of triangle ABC. The perimeter of the triangle is 48 units. 2
user100 [1]

Answer:

2

Step-by-step explanation:

A midpoint divides a segment in two equal segments

DB = 3t

AB = 6t

BE = 4t

BC = 8t

8t + 6t + 7t + 6 = 48

21t = 42

t = 2

8 0
3 years ago
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