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Crazy boy [7]
2 years ago
6

the 856 students at school represent a 20% decrease on the previous year, when the school population was

Mathematics
1 answer:
blondinia [14]2 years ago
5 0

Step-by-step explanation:

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Help PLZZZZZZZ:)))))
Scilla [17]
The answer is D. First add 2k, then divide by a, the subtract x, then divide by -1
4 0
3 years ago
Use the graph to find out over what interval f(x) is less than or equal to 0. PLEASE HELP ASAP!!!
jok3333 [9.3K]

Answer:

[-5, 2]

Step-by-step explanation:

We have to find the interval for which f(x) <= 0, the interval is [-5, 2].

5 0
2 years ago
A recipe call for 3/4 c of chopped pecans Brent wants to triple the recipe . Which numerical expression represents the amount of
mrs_skeptik [129]

Answer: 2 1/4

Step-by-step explanation:

From the question, we are told that a recipe call for 3/4 c of chopped pecans

and that Brentt wants to triple the recipe .

The numerical expression that represents the amount of pecans he will need will be gotten by multiplying 3/4c by 3. This will be:

= 3 × 3/4c

= 9/4c

= 2 1/4

5 0
2 years ago
Charlemagne’s column covers the first 12 miles in 4 hours. He then increased the speed by 2 miles per hour. If the total distanc
Mashutka [201]

Answer:

12 miles in 4 hours is 3 mph

52-12=40 miles left

40 miles at 5 mph would take 8 hours

8+4=10

it took 10 hours to finish the trip.


8 0
3 years ago
junior rides his trucycle off a level porch. If he left the porch at a speed of 4 m/s and landed a horizontal distance of 2.5m f
WITCHER [35]

Answer:

the height of the porch is H=1.91 m

Step-by-step explanation:

neglecting friction and assuming that the porch is horizontal, then the horizontal speed is v₀= 4 m/s and it does not change , thus he hits the base at

t= L/v₀ , L= horizontal distance

then for vertical motion , since the vertical velocity vy is 0 , the initial height is H ( the height of the porche)  and the final height hf is 0 , we have

hf = H + vy*t - 1/2*g*t²

0 = H + 0 -1/2*g*t²

H = 1/2*g*t² = 1/2*g*(L/v₀)²

replacing values with g= gravity = 9.8 m/s²

H = 1/2*g*(L/v₀)² = 1/2*9.8 m/s² *( 2.5 m/ 4 m/s)² = 1.91 m

therefore the height of the porch is H=1.91 m

6 0
3 years ago
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