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2 years ago

What is the sun of the 9th square number and the 2nd square number?

Mathematics

1 answer:

scoray [572]2 years ago

3 0

Answer:

Step-by-step explanation:

The 9 th square number is 9² = 81

The 2 nd square number is 2² = 4

sum = 81 + 4 = 85

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A “stick” object of height 10 cm is standing in front of a point X–ray source at a distance of 50 cm from the source. The detect

blagie [28]

Answer:

40 cm.

Step-by-step explanation:

Given,

height of the object = 10 cm

Distance of the object from the X-ray= 50 cm

Distance of detector from the source = 2 m = 200 cm

Height of the image, h = ?

Now,

$\tan \theta = \frac{P}{B}$

$\tan \theta = \frac{10}{50}$

$\tan \theta = \frac{1}{5}$

Again applying

$\tan \theta = \frac{P}{B}$

$\frac{1}{5} = \frac{h}{200}$

h = 40 cm

Hence, height of the image is equal to 40 cm.

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2 years ago

Draw the shape described below and find its total surface area.

iogann1982 [59]

Answer:

hope this helps :)

Step-by-step explanation:

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Cylinder volume & surface area (video)

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3 years ago

△ABC is given with line m drawn through A parallel to BC¯¯¯¯¯¯¯¯. In the course of proving that the interior angle measures of △

aleksklad [387]

Answer:

I think a) and c is correct.

4 0

2 years ago

Last questions on this quiz (I always get confused on finding the x value)

zimovet [89]

For the first one, we know that is a right angle. right angles are 90 degrees. if we subtract 90 - 49 that equals 41. so the second value needs to equal 41. since we have a 3 there already, we are going to subtract 41-3, which is 38. x = 38

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3 years ago

Sketch the graph of each line y= -2

Inessa [10]

The graph of y = -2 is shown below;

Please observe that y is always -2 for any value of x. Hence the graph is a straight line at the point where you have negative 2 on the vertical axis (y-axis).

8 0

1 year ago