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MArishka [77]
3 years ago
10

Select the correct answer.

Mathematics
1 answer:
kifflom [539]3 years ago
8 0

Answer:

<u>I</u><u>t</u><u> </u><u>i</u><u>s</u><u> </u><u>1</u><u>0</u><u>√</u><u>2</u>

Step-by-step explanation:

=  \sqrt{200}  \\  =  \sqrt{2 \times 100}  \\  = ( \sqrt{2} ) \times ( \sqrt{100} ) \\  =  \sqrt{2}  \times 10 \\  = 10 \sqrt{2}

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There is a scale model of the White House in Tobu World Square in Japan. The scale used for the model is 1:25. The height of the
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3.4 multiply 1-4

Step-by-step explanation:

there is a scale of white house

3 0
2 years ago
84 is 60% of what number?
mariarad [96]
I'm pretty sure that it is 140. Hope I helped!
7 0
3 years ago
Read 2 more answers
Complete the following statement.
Afina-wow [57]

Answer:

x=2; the extraneous root x=42.

All the details are in the attached picture, the answer is marked with red colour.

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2 years ago
Given: ABCD parallelogram BK ⊥ AD , AB = 6, AK = 3 Find: m∠A, m∠B, m∠C, m∠D
Troyanec [42]

Answer: Angle A = 60°, angle B = 120°, angle C = 60°, angle D = 120°

Step-by-step explanation: Please refer to the attached diagram for further details.

The question has given the parallelogram ABCD as having side AB measuring 6 units, side AK measuring 3 units and line BK has been drawn perpendicular to line AD. This means line AK forms a right angle at the point where it meets line AD. From the information provided and the figure derived from that, we have right angled triangle ABK with the right angle at point K, line AB equals 6 units and line AK equals 3 units.

Using angle A as the reference angle, line AK is the opposite (side facing the reference angle), line AB is the hypotenuse (line facing the right angle) and line AK is the adjacent (side that lies between the right angle and the reference angle).

Hence, using the trigonometric ratios,

Cos A = adjacent/hypotenuse

Cos A = 3/6

Cos A = 0.5

Checking with the calculator, (that is second function of Cos 0.5)

A = 60

The opposite sides of a parallelogram are equal (that is line AD is parallel to line BC) and therefore opposite angles are equal (that is angle A is equal to angle C).

Similarly, angle B is equal to angle D. However, angles in a quadrilateral equals 360 degrees.

Therefore, angles in parallelogram ABCD is derived as;

A + B + C + D = 360

60 + B + 60 + D = 360

120 + B + D = 360

Subtract 120 from both sides of the equation

B + D = 240

Having known that angle B equals angle D, angles B and D is derived as each half of the value 240

Angle B = 240/2

Angle B = 120

and angle D = 120

Therefore, the angles are;

A = 60, B = 120, C = 60, D = 120

3 0
3 years ago
J^2 over 2j times 2j over 3g
Serhud [2]

Answer:

D

Step-by-step explanation:

given \frac{j^2}{2j} × \frac{2j}{3g}

the 2j on the denominator of the first fraction cancels with the 2j on the numerator of the second fraction, leaving the expression in simplified form as

= \frac{j^2}{3g} → D


5 0
3 years ago
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