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pshichka [43]
2 years ago
6

20. Each student read 41 pages in December

Mathematics
2 answers:
Artemon [7]2 years ago
7 0
I would need to know how many students there are. Unless youre looking for an equation in which case its: 41x
azamat2 years ago
3 0

Answer:

I think 1,271 pages idk

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Find the similarity ratio between the two triangles.
morpeh [17]

Answer: I believe B

Step-by-step explanation:

3 0
3 years ago
Pilar is playing with a motorized toy boat. She puts the boat in a lake and it travels 400m at a constant speed. On the way back
ankoles [38]

Answer:

The trip normally takes 8 minutes

Step-by-step explanation:

The given information states that the away distance the boat traveled = 400 m

The time traveled at the same initial  speed , v₁, by the boat on the way back = 2 minutes

The increase in speed of the boat by Pilar =  10 m/min

The new speed, v₂ = v₁ + 10

The time for the return trip, t₂ = 60 seconds (1 minute) faster than time for the trip, t₁

t₂ = t₁ - 1

Therefore we have;

v₁ × t₁ = v₁×2 + v₂×(t₂-2) = 400

v₁×2 + (v₁ + 10)×(t₂-2) = 400

(v₁ + 10)×t₂ - 20 = 400

But v₁ = 400/t₁ = 400/(t₂ + 1)

Which gives;

(400/(t₂ + 1) + 10)×t₂ - 20 = 400

10×(t₂²+ 36·t₂-2)/(t₂+1) = 400

10·t₂²+ 10·t₂-420 = 0

t₂²+ t₂-42 = 0

(t₂ - 7)(t₂ + 6) = 0

t₂ = 7 minutes or -6 minutes

Given that t₂ is a natural number, we have, t₂ = 7 minutes

Whereby, t₂ = t₁ - 1, we have;

7 =  t₁ - 1

t₁ = 1 + 7 = 8 Minutes

The trip normally takes 8 minutes

3 0
3 years ago
Is algebra.
anzhelika [568]

Step-by-step explanation:

they need to add up to -56

and multiply to 180

4 0
3 years ago
17. Each person on a Ferris wheel pays $6.50
patriot [66]

Answer:

$468

Step-by-step explanation:

6.5x72 passengers= $468

6 0
3 years ago
2.8 divided 68.32 that's the homework
Anton [14]
68.32 divided by 2.8 is 24.4. I hope this helps!
3 0
3 years ago
Read 2 more answers
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