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3 years ago

Let f(x)=x^2-2x-4

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

4 0

F(-1)=1-2=-1
f(4)=16-8-4=4
A(x)=f(4)-f(-1)/4-(-1)
A(x)=4-1/4+1=3/5

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Determine if a metal rod of 2.8m can fit into a rectangular crate with dimensions 0.8m, 1.2m and 2.3m

vladimir1956 [14]

Answer:

The metal rod cannot fit into the rectangular crate

The maximum length that can fit is 2.71 m

Step-by-step explanation:

step 1

Find the diagonal of the base of the rectangular crate

Applying the Pythagoras Theorem

Let

d ----> the diagonal of the base

$d^2=0.8^2+1.2^2$

$d^2=2.08$

$d=1.44\ m$

step 2

Find the diagonal of the crate

Let

D ----> the diagonal of the crate

$D^2=d^2+h^2$

where

d is the diagonal of the base

h is the height of the crate

we have

$d=1.44\ m$

$h=2.3\ m$

substitute the values

$D^2=1.44^2+2.3^2$

$D^2=7.36$

$D=2.71\ m$

therefore

The metal rod cannot fit into the rectangular crate

The maximum length that can fit is 2.71 m

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4 years ago

What is 3/4 in a percent

IrinaK [193]

Answer:

75%

Step-by-step explanation:

Convert the fraction into a decimal number. Multiply the obtained decimal number by 100, to get a percent value.

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2 years ago

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Assume they are right triangles, find the other side of the smaller triangle
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Find the other side of the larger triangle, using corresponding sides in
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*14.25 = 24.9375

Find the area of the larger triangle
.5*14*24.9375 = 174.5625 sq/ft area of the larger triangle.

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3 years ago