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2 years ago

2x + 5y = 16,3x-5y=-1

Mathematics

1 answer:

lora16 [44]2 years ago

7 0

Answer:

the answer is $x=3,\:y=2$

Step-by-step explanation:

if you want an explanation lemmie know but I rly dont feel like putting one bc its a lot to do but that is the correct answer lol

and try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations

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Helga [31]

Answer:

C. The product of 12 and √17

Step-by-step explanation:

Because it gives a number that isn't a repeating or terminating decimal.

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2 years ago

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Dafna1 [17]

Answer:

Step-by-step explanation:

Plug the point (-1,20) into the equation.

20 = a|-1|+7

13 = a|-1|

13 = a ⋅ 1

a= 13

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(1,20) is another point on the graph.

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1 year ago

What is the surface area of this composite solid?______________ square feet 242 319 363 517

jeka57 [31]

Answer:

<h2>The right answer is 415.4 cubic feet.</h2>

Step-by-step explanation:

As you can observe in the image attached, the composite figure is formed by a square prism and a pyramid on top.

We need to find the volum of each part separately.

<h3> Square prism.</h3>

$V_{prims}=11 \times 11 \times 2=242 \ ft^{3}$

<h3>Square pyramid.</h3>

First, we need to find the height of the pyramid. We already know the height of each triangular face of the pyramid, which divides equally the side.

Let's use Pythagorean's Theorem to find the height of the pyramid.

$7^{2}=h^{2} +(5.5)^{2}\\ 49-30.25=h^{2}\\ h=\sqrt{18.75} \approx 4.3$

The height is 4.3 feet, approximately.

Now, we find the volume of the pyramid

$V_{pyramid}=\frac{1}{3}(11 \times 11 \times 4.3) \approx 173.4ft^{3}$

The sum of both figures represents the total volume of the composite figure

$V_{total}=242+173.4=415.4ft^{3}$

Therefore, the right answer is 415.4 cubic feet.

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2 years ago

Read 2 more answers

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Scorpion4ik [409]

9/10 * 1000
which would give you 900

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2 years ago

Read 2 more answers

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VashaNatasha [74]

Answer:

x=-6 y=-26

Step-by-step explanation:

in the first is -4 every time, in the second is -20 every time

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2 years ago