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4 years ago

Help me plzzzzxzzzz thank yoy

Mathematics

2 answers:

Black_prince [1.1K]4 years ago

5 0

I believe it is 14/49 there are 49 numbers in all and 14 are under 3 14/49 is .285 so about 28% or 29% if you round up

lord [1]4 years ago

4 0

With what on the photos

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The common ratio of a geometric series is 1/4 and the sum of the first 4 terms is 170

Hitman42 [59]

Answer:

The first term is 128

Step-by-step explanation:please see attachment for explanation

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3 years ago

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If x+y=10 find the value of y when x = 3

Reptile [31]

Just substitute in the number 3 for x then subtract 3 at both sides and youll have y=7

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3 years ago

Factor out the GCF 56x^2? + 16x + 64

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3 years ago

A yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks:

asambeis [7]

y = 0.012x + 0.65

Number of pages 50.00 100.00 150.00 200.00 
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x = number of pages
y = cost

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3 years ago

A backyard pool has a concrete walkway around it that is 3 feet wide on all sides. The total area of the pool and the walkway is

Gnoma [55]

Answer:

<h2>29.4 length and 21.4 width.</h2>

Step-by-step explanation:

To fin the dimensions of the pool we need to use the total area of the pool plus the concrete walkway. Lets say that W is the width and L the length. We know that, the walkway has 3 ft wide, this means that the width and length are increased by 6ft (3ft on each side). So, the total area can be expressed like this: $A_{total} = (L+6)(W+6)$ .

In addition, we know that the total area is 970 and the length is 8 ft longer than the width ( $L=W+8$ ). So:

$A_{total} = (L+6)(W+6)\\970 = (W+8+6)(W+6)\\970=W^{2}+20W+84\\W^{2}+20W-886=0$

With this quadratic equation we're gonna have to solution, the most reasonable is part of the answer. So, solving the equation we have as solutions: $W_{1}=21.4$ and $W_{2}=-41.4$

Therefore, the width is 21.4 ft, because the negative number cannot represent distances.

Using the relation between length and width:

$L=W+8\\L=21.4+8=29.4$

Therefore, the dimensions of the pool are 29.4 length and 21.4 width.

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3 years ago