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iris [78.8K]
3 years ago
10

Un delfinariu are un bazin in forma de cilindru cilcular drept. Pentru a oferi mai multe reprezentati, bazinul este impartit in

doua parti egale printr un perete dreptunghiular cu aria de 300 m patrati. Se stie ca raza bazei cilindrullui este de 15 m. Aflati inaltimea bazinului.
Mathematics
1 answer:
kakasveta [241]3 years ago
3 0

Answer:

Înălțimea bazinului este de 20 m

Step-by-step explanation:

Raza de bază a bazinului cilindric = lățimea peretelui dreptunghiular = 15 m

Suprafața peretelui dreptunghiular = lungime × lățime = 300 m²

300 m² = lungime × 15 m

lungime = 300 m² / 15m

lungime = 20 m

Lungimea peretelui dreptunghiular = înălțimea bazinului cilindric = 20 m

Prin urmare, înălțimea bazinului = 20 m.

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If anyone knows this I will give them brainiest
statuscvo [17]

Answer:

x = 12

m(QS) = 52°

m(PD) = 152°

Step-by-step explanation:

Recall: Angle formed by two secants outside a circle = ½(the difference of the intercepted arcs)

Thus:

m<R = ½[m(PD) - m(QS)]

50° = ½[(12x + 8) - (4x + 4)] => substitution

Solve for x

Multiply both sides by 2

2*50 = (12x + 8) - (4x + 4)

100 = (12x + 8) - (4x + 4)

100 = 12x + 8 - 4x - 4 (distributive property)

Add like terms

100 = 8x + 4

100 - 4 = 8x

96 = 8x

96/8 = x

12 = x

x = 12

✔️m(QS) = 4x + 4 = 4(12) + 4 = 52°

✔️m(PD) = 12x + 8 = 12(12) + 8 = 152°

3 0
3 years ago
Find each unit rate <br> 1)78mi on 3gal<br> 2)$52.50 in 7 hours<br> 3)416 mi in 8 hours
Andreas93 [3]
1) Unit Rate = 26:1
We already know that for every 3 gallons, you can travel 78 miles. Divide 78 by 3 to get 26. The 26 stands for how many miles you can travel on one gallon.

2) Unit Rate = $7.50:1
Since we already know that for every 7 hours, you earn $52.50, divide 52.50 by 7 to get 7.50. The 7.50 represents how much money you earn in 1 hour.

3) Unit Rate = 52:1
Since you can travel 416 miles in 8 hours, divide 416 by 8 to get 52. The 52 represents how many mile you can travel in 1 hour alone.

Here's a little hint too: (If I remember correctly) For unit rates, it's always going to be *any number* to 1. So even if it's a decimal or a negative, the other side of the rate always has to be 1 :)

6 0
4 years ago
What times 27equals 216
svlad2 [7]
27 time 8 equals 216
...
216 divided by 27 equals 8
3 0
3 years ago
Read 2 more answers
Please help me someone !!
adelina 88 [10]

Answer:

6^{\frac{-1}{3}}

Step-by-step explanation:

put them both in exponential form and then since they are both base 6, you can add the exponents.

6^{\frac{1}{6}} *6^{\frac{-3}{6} }

4 0
3 years ago
25 POINTS!!!!
seropon [69]

Answer:

1,080,000

Step-by-step explanation:

==> First divide 78 by 26

==> answer = 3

==> 135,000×2 = 270,000

==> 270,000 × 2 = 540,000

==> 540,000 × 2 = 1,080,000

==> 1,080,000

3 0
2 years ago
Read 2 more answers
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