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lidiya [134]
2 years ago
7

Is my answer right? if not break the hard news and give me the right one​

Mathematics
1 answer:
timama [110]2 years ago
5 0

Answer:

Yes, they are similar triangles

Step-by-step explanation:

If you make a proportion using vertical side/horizontal side

\frac{4}{10} =\frac{12}{30} \\

If you multiply 4/10 by 3/3 you will get 12/30, so the triangles are similar.

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Find the volume of a cone with a height of 12 yd and a base diameter of 10 yd.
anyanavicka [17]

Answer:

The volume of the cone is 314yd³

Step-by-step explanation:

radius = half of diameter

d = 10yd

r = 10yd / 2 = 5yd

First of all to solve this problem we have to know the formula to calculate the volume of a cone

v = volume

r = radius  = 5yd

h = height  = 12yd

π = 3.14

v = 1/3 * π * r² * h

we replace with the known values

v = 1/3 * 3.14 * (5yd)² * 12yd

v = 1/3 * 3.14 * 25yd² * 12yd

v = 314yd³

The volume of the cone is 314yd³

4 0
3 years ago
Between 9 p.m and 6:45 a.m, the water level in a swimming pool decreased by 3/16 in. Assuming that the water level decreased at
dezoksy [38]

Answer:

9:00 pm to 6:45 am = 9 hours 45 minutes = 9.75 hours

Water level drops 3/16" (or .1875") every 9.75 hours

.1875 / 9.75 = 0.0192307692  inches per hour

Step-by-step explanation:

8 0
3 years ago
Which compound inequality is equivalent to |ax-b|>c for all real numbers a, b, and c, where c>0
garik1379 [7]

Answer:

D. ax-b<-c or ax-b>c is the correct answer.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Evaluate f(7) *<br> f (x) = –2x² + 4
Firdavs [7]
Input 7 for every x so
f(7) = -2 (7)^2 +4
f(7) = -2(49) +4
f(7) = -98 +4
f(7) = -94
6 0
3 years ago
Read 2 more answers
Given 2 points (-2,6) and (5,-8) what is the slope, distance, and midpoint
Anastasy [175]
(-2,6) (5,-8)

slope = (y2 - y1) / (x2 - x1)
slope = (-8 - 6) / (5 - (-2) = -14/7 = -2 <==

midpoint = (x1 + x2)/2 , (y1 + y2)/2
m = (-2 + 5)/2 , (6 - 8)/2
m = (3/2, -1) <===

distance = sqrt ((x2 - x1)^2 + (y2 - y1)^2)
d = sqrt ((5 - (-2)^2 + (-8 - 6)^2)
d = sqrt ((5 + 2)^2 + (-14^2))
d = sqrt (7^2 + 14^2)
d = sqrt (49 + 196)
d = sqrt 245
d = 15.65 <==
5 0
3 years ago
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