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pav-90 [236]
3 years ago
7

Please help need quick

Mathematics
1 answer:
weeeeeb [17]3 years ago
6 0

Answer:

a = 1

Step-by-step explanation:

It is an isosceles triangle (angle 45°, 90°, 45°), therefore a = b

Using pitagoras:

(\sqrt{2} )^{2}=a^{2}+a^{2} \\2 = 2a^{2} \\\frac{2}{2}  = a^{2} \\1 = a^{2}\\1 = a

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Check my answer please? I'll report if you just say yeah and it's not correct lol.
Elena-2011 [213]
Yes, set up your proportion: x/21 = 10/14
Cross multiply 14x = 210
Divide both sides by 14 and x= 15 cm
7 0
3 years ago
Read 2 more answers
Write 16.985 0.006 and 0.238 in word form
alexgriva [62]
<span>sixteen and nine hundred eighty-five hundredths 
six-thousandths
two hundred thirty-eight hundredths</span>
7 0
3 years ago
The quadrilateral shown is rotated 90° clockwise about the origin. In which quadrant is the image of the quadrilateral located?
Viktor [21]

Answer:

Option (2). 1

Step-by-step explanation:

Coordinates of point A, B, C and D are,

A(-4, 4), B(-2, 4), C(-2, 1) and D(-4, 3).

Quadrilateral ABCD when rotated 90° clockwise about the origin,

Rule for the rotation of the vertices,

(x, y) → (y, -x)

Following the rule of rotation coordinates of the image points,

A(-4, 4) → A'(4, 4)

B(-2, 4) → B'(4, 2)

C(-2, 1) → C'(1, 2)

D(-4, 3) → D'(3, 4)

Since all image points have the positive coordinates (x and y coordinates), image quadrilateral A'B'C'D' will be located in 1st quadrant.

Option (2) is the correct option.

4 0
3 years ago
What is the equation of this line?<br> Please Help <br><br> Y=4x<br> Y=-1/4x<br> Y=-4x<br> Y=1/4x
Sveta_85 [38]

Answer: Y=-1/4x

Step-by-step explanation:

A good way to find an equation of a line is to look for the slope. An obvious spot on this line would be when it crosses (0,0), and another one to the right would be when it crosses at (4,-1).

The slope is rise over run, or if we use the two points we found, "rise" would be -1, because it's dropping 1 unit when going from (0,0) to (4,-1), and the "run" would be 4, because it moves to the right 4 from (0,0) to (4,-1).

Putting these two values together we get:

m (slope) = rise / run

m = -1 / 4

Out of all the equations we're given, we can look for the one with a slope of -1/4, which is given to us:

y = (-1/4)x

7 0
3 years ago
Red ribbons are wrapped around all the columns of a building. Each ribbon does not overlap itself. Each column has a radius of 3
Roman55 [17]

Hello!

If this long ribbon measures 144\pi feet, you can see, it was only multiplied by one number, which has the be the diameter of a column to get our circumference. If we divide this by our diameter 6 (diameter is double the radius, 3), we get our answer below.

144/6=24

Therefore, our answer is C) 24.

I hope this helps!

5 0
3 years ago
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