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| 71651. |
(3) Write the following polynomial in standard umin standard iumam3+4+3m. |
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Answer» In standard form :m³ + 0m² + 3m + 4 |
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| 71652. |
EXERCI1. Is zero a rational number? Explain why orwhy not. |
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| 71653. |
A hemispherical bowl of internal radius 9 cm is full of water. itscontents are emptied into a cylindrical vessel of internal radius 6 cmFind the height of water in the cylindrical vessel. |
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| 71654. |
EXERCI*• Using appropriate properties find.alw+Naof the following. |
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| 71655. |
EXERCI1.Find the product:(a) *25.758(d)300.75x 52.Find the cost of 9 pair of glas234.65.G. |
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Answer» D ) = 1503.75a) = 205.60 a) 205.90b) 1503.75 |
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| 71656. |
EXERCISolve the following equations.d)1,x-2=7 |
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Answer» x - 2 = 7=> x = 7+ 2=> x= 9 |
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| 71657. |
EXERCI-421.as a rational number with denominator 7.Express -98 |
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| 71658. |
Exerciind the circumference of the circle, whose radius is 17.5 cm. |
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| 71659. |
13 um |
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Answer» what do you want to ask here ?? |
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| 71660. |
UM |
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| 71661. |
PR um'[ 4! |
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Answer» hit like if you find it useful |
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| 71662. |
Fig. 7.32ABCand DBCare twoiosceles triangles on thesame base BC(se Fig.7.33). Show thatLABD-LACDAABC is an isosceles triangle in which AB #AC.Side Babs qradtuced 0 D such hat(see Fig 7341 ShoFig. 7.33 |
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Answer» 5) |
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| 71663. |
sing appropriate properties find:2 15 2 22 -2+-ă§ă¨-914 14 7 92 |
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Answer» -2*15/(9*14) - 2/14 + 22*(-2)/(7×9) = -5/21 - 1/7 - 44/63 = (-5×3-9-44)/63 = (-15-53)/63 = -68/63 If you find this answer helpful then like it. |
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| 71664. |
EXAMPLE7 Find the equation of the internal biseA, B, C are (5, 2), (2, 3) and (6, 5) respectively. |
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| 71665. |
E.ABC is a triangle, in which LB-2 LC. D isa point on side BC such that AD biseZBAC and AB-CD. Prove that /BAC-7 |
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| 71666. |
Exercise 8.1Find the compound interest on10,000 at 10% per annum. for 3 years, the interest payable yearly. |
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| 71667. |
5000 for 2(7) Find the amount and the compound interest onyears at 6% pea annum interest payable yearly |
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Answer» 1250 is the answer of this sum Given,P = 5000, n = 2 years, R = 6% Let amount =A, compound interest = CI Then,A = P(1 + R/100)^nA = 5000(1 + 6/100)^2A = 5000(1.06)^2A = 5000*1.1236A = 5618 Therefore,Amount = Rs 5618CI = 5618 - 5000 = Rs 618 |
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| 71668. |
13. If cos , then find the value of 2 sec-9 + 2 tane-7.2θ - |
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Answer» Let ABC be a right angle triangle , right angled at B and C= theta Therefore cos theta = 2/3 ( given) And cos theta = BC/AC So, BC=2 , AC = 3 So using Pythagoras theorem .AB = √5Now 2 sec squared theta + 2 tan squared theta -7= 2*9/4+2*5/4-7= 14/2-7= 7-7=0 |
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| 71669. |
EXERCI1. Find the median of:(i) 3, 11, 7, 2, 5, 9, 9, 2, 10 |
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Answer» First sort the numbers in ascending order.2,2,3,5,7,9,9,10,11 Median is the middle number=7 Ans |
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| 71670. |
16. A tree breaks due to storm and broken part bends so that the top of the tree touches the ground makingan angle 60° with it. The distance between the foot of the tree to the point where the top touchee theground is 12 m. Find the height of the tree |
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Answer» Angle of elevation ( angle CDB)= 30° distance between foot to the point where top touches (DB) = 8cmlet AB = h cm be the height of tree .AC is part of broken tree in rgt triangle CDB TAN60° = CD upon DB1 upon √3 = CB upon 8 CB = 8 upon √3 ................(1)again ,in right triangle CDBCOS 30° = DB upon CD√3 upon 2 = 12 upon CD √3CD= 12CD = 12 upon √3. ..............(2)now total height of tree = AC + CB= CD+CB (because AC=CD)..BY USING (1) AND (2) 12 UPON √3 + 8 UPON √3 12+8 UPON √3 20 upon √3 20√3 upon 3...=8√3 |
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| 71671. |
2 BISE) D5 b b o1R LR LIk 1 प्प b 20005 b BIK 1 bhiish) b2 |2र. ै प्पपटा 20 प्प दद 'प्प्द्दा1 (19A04T) अगर (पा K |
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| 71672. |
CoComarks each athe alternatives in all such question3Find the value of (81)Write the coefficient of Ď3 in 2x+12. Find the value of K if the line on 2x162. |
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| 71673. |
Exunple 7 : AB is a line-segment. P and Qapoints on opposite sides of AB such that each of this equidistant from the points A and B (see Fig. 7.3Show that the line PQ is the perpendicular biseof AB |
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Answer» thanku bro |
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| 71674. |
Find the compound interest of 10,000 at10% per annum for 3 years the interest payable yearly |
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| 71675. |
The difference between simple interest and compound interest on an afor 5 years at 5% p.a. is(d)mount2,365.34. Find the amount. |
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Answer» SI = P*R*T/100 = P*5*5/100 = P/4 =.25 For compound interestA = P(1 + R/100)^5P + CI = P(1 + 5/100)^5CI = P(1.05)^5 - PCI = 1.276P - PCI = .276P Then,CI - SI = 2365.34(.276 - .25)P = 2365.34.026P = 2365.34P = 2365.34/.026P = 90974.61 Therefore, Amount = Rs 90974.61 |
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| 71676. |
Heena lent 40960 to Parveen at the rate of 61% per annum compound interest. Find themount payable by Parveen to Heena after 3 years.4 |
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Answer» please like my answer if you find it useful nice answer keep.like it |
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| 71677. |
Find the compound interest on10,000 at 10% per annum for 3 years, the interest payable yearly. |
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| 71678. |
A survey conduct on 20 households in a locality by a group of students resultedin the following frequency table for the number of family member in a householdFamily sizeNumber of families1-3 355-77.99-17-922Find the Mode of this data. |
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Answer» M=L1+f1-f0/2f1-f2-f1×2M=3+(8-7)/(2×8-7-2)×2M=3+2/9M=3+0.222M=3.222 |
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| 71679. |
A tree breaks due to storm and the broken partbends so that the top of the tree touches the groundmaking an angle 30e with it. The distance betweenthe foot of the tree to the point where the toptouches the ground is 8 m. Find the height of thetree. |
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Answer» thanx |
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| 71680. |
4) G oS छिएगन मोम 48 को झएन, 32 हि छिएगय़ पोग कऊ झापव डिजोव का (नथि।व... नि e L Sy ude |
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Answer» 1 dozen = 12 units12 eggs cost 48 rupees=> 1 egg costs ( 48/12) = Rs. 4Cost of 32 eggs = 32 * 4 = Rs. 128 PLEASE HIT THE LIKE BUTTON |
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| 71681. |
2. A tree breaks due to storm and the broken partbends so that the top of the tree touches the groundmaking an angle 309 with it. The distance betweenthe foot of the tree to the point where the toptouches the ground is 8 m. Find the height of thetree |
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| 71682. |
fromapoint. 01. A tower is 100vs meter high. Find the angle of elevation if it's topit's foct. |
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| 71683. |
I e L R ARGy A Find the tenth term of an AP-AP.: -10, -15, 20,Simplify : 1.0, -1.5, 20, :... का दसबाँ पद ज्ञात कीजिए ।oS |
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Answer» a=-1.0d=-1.5-(-1)=-0.5n=10an=a+(n-1)da10=-1+9(-0.5)a10=-1-4.5=-5.5 |
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| 71684. |
21. Iftwo isosceles triangles have a common base, the line joining their vertices bisects themat right angles |
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| 71685. |
2. In A ABC andAABD, if DA-CB and ZDAB-2CBA, prove that ΔΑΟΒ issoscelesallcts BCA, prove that AACD ABCD |
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| 71686. |
interest on 234,000 at l0% p.a. for 3 years.Find the compoundIlgumount and compound interest on 80at 90 na for 2 years |
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Answer» Given:P = Rs 34,000 R = 10% % p.a n = 3 yearsFormula used:A = P(1+R/100)nSolution:A = 34000(1+10/100)3 A = 34000(1.1)3 A = Rs 112200 Thus, the required amount is Rs 112200 |
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| 71687. |
1.If40000amountsto46305in11years,compoundinterestpayablehalfyearly,find2the rate of interest per annum. |
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| 71688. |
A tree 12 m high, is broken by the wind in such a way that its top touches the ground and makes an agle of 60° with the ground. At what height from the bottom the tree is broken by the wind? |
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| 71689. |
Four family members are going on an airplane trip together. They areparking a car at the airport terminal. The daily rate for parking a car is S17per car. The cars will be parked for 6 days. What is the total cost per familymember? Explain how you solved the problem. |
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Answer» Daily rate =$17The car is parked for 6 days. So, total cost for 6 days = $(17*6)= $ 102 Please hit the like button if this helped you. |
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| 71690. |
2.Thetriangular side walls of a flyover have been used for advertisements. The sides ofhe walls are 122 m, 22 m and 120 m (see Fig. 12.9). The advertisements yield ang of 5000 per m2 per year. A company hired one of its walls for 3 months. Howmuch rent did it pay?122m22m120mFig 12.9 |
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| 71691. |
022)A tree 12m high is broken by the wind in such a way that its top touché the ground andmakes an angle of 60 with the ground. At what height from the bottom the tree is broken by thewind? Give the answer to the second place of decimal |
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| 71692. |
(2) A tree 12 m high is broken by the wind insuch a way that its top touches the groundand makes an angle of 60 with the ground. Atwhat height from the bottom the tree isbroken by the wind? (3-1.73) |
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| 71693. |
9:22)A tree 12m high is broken by the wind in such a way that its top touché the ground andmakes an angle of 60 with the ground. At what height from the bottom the tree is brokem by fhewind? Give the answer to the second place of decimal |
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| 71694. |
uvic eh. Ans.15. A CCTV camera is placed on the top of a straight 12 Meter high poea way that traffic can be seen beyond 13 Meter of line of sight of t uehdistance from of the foot of pole beyond which the traffic iFind the |
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| 71695. |
11 Find the measure of Zx in each polygon.HOTS 16 Wh148°749an09101290 |
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Answer» =129°+x°=180°=x°=180°-129°=x°=51° |
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| 71696. |
I.Find the rate when simple interest on 5000 for 3 years is 1500.for ? wears |
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| 71697. |
2. PO = PR in A POR. If ZQ = 48°, find ZP and ZR.In opn 100 000 |
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Answer» 84 given,IN TRIANGLE PQR PQ=PR<Q=48°<Q=<R(INTERIOR ANGLES ON THE SAME SIDE OF TRANSVERSAL)<R=48°<P+<Q+<R=180°<P+48°+48°=180°<P+96=180°<P=180-96<P=84° |
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| 71698. |
A certain sum was borrowed at 15% pa. If at the end of 2 years Rs. 1290 was compounded as compound interest, find the sum borrowed. |
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| 71699. |
USUM OLHS CTS BY 10. P.wo-digit number is 3 more than 4 times the sum of its digits. Il 18 is added to themumber, its digits are reversed. Find the number.Rule:Ag |
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| 71700. |
find the compound interest on ₹2000 at 5% per year for 3 year |
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Answer» For first yearINTEREST = 2000x5x1/100= 100 For second yearINTEREST = 2200x5x1/100= 110 For third yearINTEREST = 2310x5x1/100= 115.5 Total Interest for 3 years = 100+110+115.5= 325.5 in my book is other |
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