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2 years ago

What's the area of a triangle of 14ft and 17ft

Mathematics

1 answer:

BlackZzzverrR [31]2 years ago

8 0

14 x17 = 238 feet. Area is just length times width

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If the average of x and y is 11 and the average of x, y and z is 5, what is the value of z?

mixer [17]

Answer:

z = -17

Step-by-step explanation:

If the average of x and y is 11, then;

x+y/2 = 11

x+y = 2 + 11

x+y = 22 .... 1

similarly, if average of x, y and z is 5, then;

x+y+z/3 = 5

x+y+z = 3*5

x+y+z = 15

Since x+y = 22

22 + z = 5

z = 5 - 22

z = -17

Hence the value of z is -17

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2 years ago

Pleaseee helpppp <3

Serjik [45]

$h=-16t^2+36t+4\implies \stackrel{h}{0}=4(-4t^2+9t+1)\implies 0=-4t^2+9t+1 \\\\[-0.35em] ~\dotfill\\\\ ~~~~~~~~~~~~\textit{quadratic formula} \\\\ 0=\stackrel{\stackrel{a}{\downarrow }}{-4}t^2\stackrel{\stackrel{b}{\downarrow }}{+9}t\stackrel{\stackrel{c}{\downarrow }}{+1} \qquad \qquad t= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a}$

$t= \cfrac{ - (9) \pm \sqrt { (9)^2 -4(-4)(1)}}{2(-4)} \implies t = \cfrac{ -9 \pm \sqrt { 81 +16}}{ -8 } \\\\\\ t= \cfrac{ -9 \pm \sqrt { 97 }}{ -8 }\implies t=\cfrac{9\mp\sqrt{97}}{8}$

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4 months ago

Are 5(2x-y) and 15x-5y equivalent expressions?

krek1111 [17]

No, they are not equivalent.

5(2x - y) = 10x - 5y and it is not equal to 15x - 5y.

(using distribution property)

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2 years ago

What is the area of 4.5 and 5.5cm and 20cm

amm1812

Answer:

6.8

Step-by-step explanation:

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2 years ago

What's the answer to this questions?

tia_tia [17]

I believe the answer is 2 :) .

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2 years ago