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3 years ago

Plz help ...............................

Mathematics

2 answers:

wlad13 [49]3 years ago

8 0

Answer:

The right angled triangle

soldier1979 [14.2K]3 years ago

3 0

Answer:

It is the right-angled triangle.

Step-by-step explanation:

According to the Pythagorean theorem, $a^{2}+b^{2}=c^{2}$ , which c is the longest side of the triangle.

So, $27^{2}+36^{2}=45^{2}$ if the triangle is right angle.

$LHS=27^{2} + 36^{2} = 2025$

$RHS=45^{2}=$ $RHS=45^{2} = 2025$

∵LHS=RHS

∴It is a right-angled triangle.

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6. The vertices of ALMN are L(7,4), M(7,16), and

max2010maxim [7]

Answer:

(a) LM=12 units, LN=35 units, MN=37 units

(b)8 84 units

Step-by-step explanation:

(a)

Since points L and M have same x coordinates, it means they are in the same plane. Also, since the Y coordinates of L and N are same, they also lie in the same plane

Length $LM=\sqrt {(7-7)^{2}+(16-4)^{2}}=12 units$

Length $LN=\sqrt {(42-7)^{2}+(4-4)^{2}}=35 units$

Length $MN=\sqrt {(42-7)^{2}+(4-16)^{2}}=37 units$

Alternatively, since this is a right angle triangle, length MN is found using Pythagoras theorem where

$MN=\sqrt {(LN)^{2}+(LM)^{2}}=\sqrt {(12)^{2}+(35)^{2}}=37 units$

Therefore, the lengths LM=12 units, LN=35 units and MN=37 units

(b)

Perimeter is the distance all round the figure

P=LM+LN+MN=12 units+35 units+37 units=84 units

(c)

Area of a triangle is given by 0.5bh where b is base and h is height, in this case, b is LN=35 units and h=LM which is 12 units

Therefore, A=0.5*12*35= 210 square units

4 0

3 years ago

A 15 ft. telephone pole has a wire that extends from the top of the pole to the ground. The wire and the ground form a 42° angle

Lorico [155]

Answer:

Correct choice is A

Step-by-step explanation:

Consider right triangle ABC formed by the telephone pole (side AB) and ground (side BC). In this triangle AC is the length of the wire, BC is the distance from the base of the pole to the spot where the wire touches the ground and AB=15 ft, ∠ACB=42°.

Then

$\sin 42^{\circ}=\dfrac{AB}{AC}\Rightarrow AC=\dfrac{AB}{\sin 42^{\circ}}=\dfrac{15}{\sin 42^{\circ}}\approx 22.4\ ft.$
$\tan 42^{\circ}=\dfrac{AB}{BC}\Rightarrow BC=\dfrac{AB}{\tan 42^{\circ}}=\dfrac{15}{\sin 42^{\circ}}\approx 16.7\ ft.$

8 0

3 years ago

If you paint 1/3 of a wall in 1/4 hour.at that rate,how long will it take you to paint one wall?

denpristay [2]

Step-by-step explanation:

1 part of 3 sections of a wall takes 1/4 of an hour, (.25 or 25% of an hour), (15 minutes is 1/4 of 60 minutes), so if it takes 15 minutes for one section to be painted & you have 3 sections,

(15+15+15) or (15×3)

= your answer

5 0

3 years ago

Mary says the pen for her horse is an acute right triangle. Is this possible?Explain.

erica [24]

Yes it is absolutely possible. A horse pin can be any shape or size. So if she want's her horses pen to be an acute triangle it can be. Hope this helps!

3 0

3 years ago

HELPPP THIS IS MY LAST QUESTION AHHHH

Irina18 [472]

Answer:

its eather a or c

Step-by-step explanation:

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3 years ago