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3 years ago

Help me please +brainliest

Mathematics

1 answer:

solmaris [256]3 years ago

6 0

Ok let's start with question 1.

1. The equation is given. If she advices 360 people each week for 4 week she earns...

4(80+360(15)/100) = $536

2. In this problem instead of evaluating M we solve for n with M given.

140=80+15n/100

n=400 people

3. The new equation will still follow the same format.

M=65+21n/100

4. This will be the intersection point of the two lines. So when does...

80+15n/10=65+21n/100

We just have to solve for n.

-0.06n=-15

n=250 people

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You have 100 feet of fencing and decide to make a rectangular garden. What is the largest area enclosed

k0ka [10]

Answer:

625 ft^2

Step-by-step explanation:

Given

$P = 100$ --- perimeter

Required

The largest area

The perimeter is calculated as:

$P = 2 * ( L + W)$

So, we have:

$2 * ( L + W) = 100$

Divide both sides by 2

$L + W = 50$

Make L the subject

$L = 50 - W$

The area is calculated as:

$A= L * W$

Substitute $L = 50 - W$

$A= (50 - W) * W$

Open bracket

$A = 50W - W^2$

Differentiate with respect to W

$A' = 50 -2W$

Set to 0; to get the maximum value of W

$50 - 2W = 0$

Collect like terms

$-2W = -50$

Divide by -2

$W = 25$

So, the maximum area is:

$A = 50W - W^2$

$A = 50 * 25 - 25^2$

$A = 1250 - 625$

$A = 625$

3 0

3 years ago

How many tiles would I need to by if each tile was 2ft by 2Ft and the square footage was 69X69

valina [46]

This is the formula you would use to calculate how many tiles you would need.

# of tiles you need = Total square footage ÷ square footage of each tile

Total square footage: 69x69 = 4761 square feet
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# of tiles you need = 4761 ÷ 4 = 1190.25

You will need 1190.25 tiles.

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4 years ago

Last week Cam's Ice Cream Shop sold 52 chocolate chip ice cream cones out of total of 997 ice cream cones. Based on this data, w

AleksAgata [21]

Answer:

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Step-by-step explanation:

i just know and i checked it on khan academy

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3 years ago

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