Question

medal for help - write a function rule for the area a of a triangle whose base , b is 2 cm less than 7 times the height.what is the area of the triangle when the height is 14 cn? Choices below :)

Answer 1

hmm...
14*7-2

Answer 2

C

Answer 3

a=7h-2

Answer 4

\[A=\dfrac{1}{2}bh=\dfrac{1}{2}(\color{red}{7h-2})h\]

Answer 5

lol C is not right...

Answer 6

oh no ?

Answer 7

do you understand how you plug (7h-2) into b?

Answer 8

is it a?

Answer 9

yep it's A

Answer 10

@geerky42

Answer 11

can you explain, @geerky42

Answer 12

b = 7h-2
Area, A = 1/2* b*h
A = 1/2 *(7h-2)* h

Answer 13

b=7h-2, correct? you just plug it in formula for area of triangle A = (1/2) bh and simplify.

Answer 14

now we are all confused, @mathmate

Answer 15

distribute the h to get (7h^2 -2h) /2
answer choice A

Answer 16

what about the ^2? that isnt supposed to be there

Answer 17

b=7h-2
a=.5*[bh]

Answer 18

a=bh/2

Answer 19

...

\(\dfrac{1}{2}(7h-2)h\)

simplify that @Dbzfan836 . what do you get?

Answer 20

٩◔̯◔۶

Answer 21

96/2, 48;
48*14

Answer 22

head spinning

Answer 23

when the height is 14 cm it means h= 14
Area = (7h^2 -2h)/2 = 7*(14)^2 - 2*14 divided by 2
= 672

Answer 24

woah

Answer 25

that is one trippy question

Answer 26

A is the answer

Answer 27

a is correct but the other two you helped with are also correct @Dbzfan836 ty all

Answer 28

np

Answer 29

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