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3 years ago

An isosceles triangle may be right or acute but never obtuse. A. True B. False

Mathematics

2 answers:

Novosadov [1.4K]3 years ago

8 0

The answer is False.

levacccp [35]3 years ago

5 0

An isosceles triangle is a triangle in which the two sides of the polygon are equal as well as the angles opposite to these sides are also congrunet. In this case, an isosceles triangle could have 45-45-90 angles which means it can be a right angle. An obtuse triangle has angle greater than 90 which can be truly possible for isosceles triangles. Answer then is false.

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The sum of 5 times a number and 4 is equal to 6

g100num [7]

Answer:

5(x+4)=6

5 times a number and (+) 4 is equal to 6.

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3 years ago

A yogurt costs 45p. How many yogurts can be bought for five pounds?

LekaFEV [45]

1/9 of a yogurt can be bought with 5 pounds.

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3 years ago

What is the reason for Statement 3 of the two-column proof?

Ivenika [448]

Refer to the attached image.

Given:

The measure of $\angle JMK= 52^\circ$ and $\angle KML= 38^\circ$ .

Also, Three rays ML, MK, and MJ share an endpoint M. Ray MK forms a bisector as shown in the attached image and the bisector divides angle JML into two parts.

To Prove: $\angle JML$ is a right angle.

Proof:

Statements Reasons

1. $m \angle JMK=52^\circ$ Given

2. $m \angle KML=38^\circ$ Given

3. $m \angle JMK+m \angle KML=m \angle JML$

The reason for statement 3 is Angle addition postulate. As angle JML is composed of 2 angles that is angle JMK and angle KML. So by adding the measures of angles JMK and KML, we will get the measure of angle JML which is referred as Angle addition postulate.

4. $52^\circ+38^\circ = m \angle JML$ Substitution property of equality

5. $90^\circ = m \angle JML$ Simplification

6. $\angle$ JML is a right angle. Definition of right angle

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4 years ago

An observer stands 25 feet from the base of a flagpole and watches a flag being lowered at a rate of 5 ft/sec. Determine the rat

Sedaia [141]

Answer:

0.1 rad/s

Step-by-step explanation:

Since the distance from or to the flagpole is not given, I will assume. And my assumption is 50 ft

Now, the elevation angle A = 45 degrees, converting to radians, we have π/4 radians

Remember that the tan of an angle is OPP/HYP, and so

tan A = h/25, on differentiating, we have

d tan A/dA = sec^2 A = (1/25) dh/dA

Next, we have

25 sec^2 A * dA/dt= dh/dt = 5

Making dA/dt the subject of formula, we have

dA/dt = (1/5) cos^2 A

but cos^2 A from trigonometry = 1/2, this means that

dA/dt = .1 radians/second

If you want to convert to degrees, your have

.1 Rad/s( 180 deg/rad) = 18 degrees/second

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3 years ago

Sum of two numbers is 42 and their difference is 8 . Find the numbers ?

worty [1.4K]

Answer:

25 and 17

Step-by-step explanation:

25+17=42

25-17=8

7 0

3 years ago