3 years ago

The work of a student to find the dimensions of a rectangle of area 8 + 16x and width 4 is shown below:

Mathematics

1 answer:

Jobisdone [24]3 years ago

6 0

Factor 8x+16

It would be 4(2+4x)

So the student made a mistake in step 2

It should be 4(2)+4(4x)

Answer C

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What is the is f(x)=8x^2+4x written in the vertex form?

erastovalidia [21]

Answer:

f(x)=8-4

Step-by-step explanation:

f(x) = 8 (x+1/4)^2-1/2

f(x) = 8 – (x+1/4)^2-1/16

f(x) = 8 – 2

f(x) = 8 – 4

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3 years ago

What is does -27/8+ 2n=n- 5/2 + 5/4m=

enyata [817]

Answer:

m= 8n-7/10

Step-by-step explanation:

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3 years ago

What is 40 percent of 85?

DaniilM [7]

Answer:

Answer is 34.

Step-by-step explanation:

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3 years ago

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A shoreline is eroding at a rate of 1/3 foot per 3 months. How many feet are eroding per year?

Charra [1.4K]

1 1/3 feet

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3 years ago

On a map where each unit represents one kilometer, two marinas are located at P(4,2) and Q(8,12). If a boat travels in a straigh

Slav-nsk [51]

Answer:

Step-by-step explanation:

draw a right angled triangle with the right angle in the bottom left

label P as the bottome left corner and write its coordinates next to it

do same with Q

the length of the triangle is 4 (8-4 = 4)

the height is 10 (12-2 = 10)

use pythagoras to work out the hypotenuse:

$\sqrt{4^{2}+10^{2}} =2\sqrt{29}$

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2 years ago