Answer:
b= 4 in.
Step-by-step explanation:
Ok. So the area of a triangle is base * height divided by 2.
So, the base is b and the height is 3b.
b*3b= 3b^2.
Now, divide that by 2.
(3b^2)/2.
Now, we know what the area is already- 24 in.^2. So, let's set the area expression that I found earlier equal to this area, since they're the same.
(3b^2)/2 = 24
3b^2 = 48
b^2 = 16
Ok. Let's stop here. Now, we square root both sides to obtain b, but we are presented with a problem here. B can equal both 4 and -4 right? Since -4*-4=16 and 4*4=16. However, it is impossible for a 2d shape to have negative measurements. So, the answer is 4.
Answer: 8
Step-by-step explanation:
Let mammals be represented by y
There are three more reptiles than mammals in the habitat. Therefore, Reptiles = y + 3
There are seven fewer amphibians than mammals in the habitat. Therefore, amphibian = y - 7
y + y + 3 + y - 7 = 41
3y - 4 = 41
3y = 41 + 4
3y = 45
y = 45/3
y = 15
Since amphibian = y - 7
= 15 - 7
= 8
There are 8 amphibians
Step-by-step explanation:
the sum of all internal angles of any quadrilateral has to be 360°.
like in rectangles (4×90 = 360).
in this trapezoid 2 of the rectangle angles are just a little bit distorted : one angle gets more, which it takes from the other. but together these 2 angles must be 180°, as the remaining 2 angles are "normal" rectangle angles of 90°.
therefore
180 = angle 3 + angle4 = 160 + angle4
angle4 = 180 - 160 = 20°
and therefore,
angle2 + angle4 = 90 + 20 = 110°
Answer:
The probability is less likely and 2/20
Please mark me as brainliest.
=> y = (2x + 1) / (x - 4)
<span>=> xy - 4y = 2x + 1 </span>
<span>=> xy - 2x = 4y + 1 </span>
<span>=> x(y - 2) = 4y + 1 </span>
<span>=> x = (4y + 1) / (y - 2) </span>
<span>=> f-1(x) = (4x + 1) / (x - 2) </span>
<span>subtitute x = 3 </span>
<span>=> f-1(3) = 13</span>
