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Ksivusya [100]
3 years ago
11

Help!!?????? Plssssss

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
8 0

Answer:

1st row- 27

2nd row- 18, 48

3rd row- 55

ludmilkaskok [199]3 years ago
4 0
27
48
55
.........
......
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What is the value of the expression 2x2+3xy-y2, when x=2 And y=-4
Otrada [13]
Plug in 2 for x, and -4 for y

2(2)² + 3(2)(-4) - (-4)²

2² = 4(2) = 8
3(2) = 6(-4) = -24
-4² = 16

8 - 24 - 16 = answer

Simplify.

answer = 8 - 40
answer = -32

-32 is your answer

hope this helps
7 0
3 years ago
what is the decimal equivalent of the fraction? 7/12 enter your answer to the nearest thousandths in the box
Likurg_2 [28]
The answer is 0.583, and the 3 has a bar notation


Hope this helped

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4 0
3 years ago
Read 2 more answers
Which is closest to the value of w in the triangle below?
mr Goodwill [35]

Answer: B. 2.5 in

Step-by-step explanation:

From the given right angle triangle,

the hypotenuse of the right angle triangle is the unknown side.

With m∠32 as the reference angle,

the adjacent side of the right angle triangle is 4 in

the opposite side of the right angle triangle is w

To determine w, we would apply

the tangent trigonometric ratio which is expressed as

Tan θ = opposite side/adjacent side. Therefore,

Tan 32 = w/4

w = 4tan32 = 4 × 0.625

w = 2.5 in

8 0
3 years ago
I need the surface area of this shape EASY POINTS<br><br> Explain your answer
Alexus [3.1K]

Hi there! :)

So, to find the surface area, all you need to do is find the area of each surface on the shape.

Theres 5 different shapes in the model, so you're going to need to find the area of each one.

There is:

1. left side triangle

2.right side triangle

3.slanted rectangle

4.bottom rectangle

5. back rectangle

all the rectangles are simple, so let's start with them.

the dimensions of the slanted rectangle are 7m and 8m, so 8•7 is 56.

the dimensions of the bottom rectangle are 5m and 7m, so its 35.

the back rectangle has 5m and 7m so it is 35.

Halfway done!!

Now, onto the triangles. they're the same thing as the rectangles, but you half to 'cut it in half' or just divide by two. both of the triangles will be the same.

the triangles measurements are 5m and 8m, so 5•8 is 40, 40÷2 is 20. both of the triangles being 20, now all we have to do is add it up.

20+20+35+35+56=166

and that's about it!

I hope this helps, sorry it took so long to answer, but I hope you have a good day!

-Scarlet

(see photo for my paper work)

{CHECK REPLIES!}

5 0
3 years ago
Helppp ...............
vaieri [72.5K]

Answer:

i think its B

Step-by-step explanation:

im not sure but im pretty sure if its wrong im sorry but im pretty sure its correct

5 0
3 years ago
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