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Digiron [165]
3 years ago
11

12 rounded to the nearest tenth in between 167

Mathematics
1 answer:
Alex777 [14]3 years ago
3 0

No, 12 rounded to the nearest tenth is 12.0


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Plz hurry!!!! thank you!!!!
Nikitich [7]

Answer:

Area of trapezium = 4.4132 R²

Step-by-step explanation:

Given, MNPK is a trapezoid

MN = PK and ∠NMK = 65°

OT = R.

⇒ ∠PKM = 65° and also ∠MNP = ∠KPN = x (say).

Now, sum of interior angles in a quadrilateral of 4 sides = 360°.

⇒ x + x + 65° + 65° = 360°

⇒ x = 115°.

Here, NS is a tangent to the circle and ∠NSO = 90°

consider triangle NOS;

line joining O and N bisects the angle ∠MNP

⇒ ∠ONS = \frac{115}{2} = 57.5°

Now, tan(57.5°) = \frac{OS}{SN}

⇒ 1.5697 = \frac{R}{SN}

⇒ SN = 0.637 R

⇒ NP = 2×SN = 2× 0.637 R = 1.274 R

Now, draw a line parallel to ST from N to line MK

let the intersection point be Q.

⇒ NQ = 2R

Consider triangle NQM,

tan(∠NMQ) = \frac{NQ}{QM}

⇒ tan65° = \frac{NQ}{QM}

⇒ QM = \frac{2R}{2.1445}

QM = 0.9326 R .

⇒ MT = MQ + QT

          = 0.9326 R + 0.637 R  (as QT = SN)

⇒ MT = 1.5696 R

⇒ MK = 2×MT = 2×1.5696 R = 3.1392 R

Now, area of trapezium is (sum of parallel sides/ 2)×(distance between them).

⇒ A = (\frac{NP + MK}{2}) × (ST)

       = (\frac{1.274 R + 3.1392 R}{2}) × 2 R

       = 4.4132 R²

⇒ Area of trapezium = 4.4132 R²

5 0
3 years ago
Laura is training to run a race. She keeps track of the number of miles she runs. She has been training for 10 weeks, and she ha
MAVERICK [17]

Answer:

it's answer is C 12 miles per week

6 0
3 years ago
Read 2 more answers
Use the quadratic formula to solve for x. <br> 5x²-3x=3<br> Round to the nearest 100th
Semenov [28]

Answer: -0.530662 or 1.13066

Step-by-step explanation:

4 0
3 years ago
3feet 6in + 8 feet 2in +4in + 2feet 6in
Ede4ka [16]
12 inches in a foot.

6in+2in+4in+6in= 18in (one and half feet)

3+8+2+1= 14 feet

The answer is 14 feet 6 inches.

I hope this helps!
~kaikers
8 0
3 years ago
Seven halves is equal to how many wholes?
nikdorinn [45]
Seven halves would equal to 3.5 wholes. What you do is divide 7 by 2 to find out how many wholes their are.
6 0
3 years ago
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