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bixtya [17]
3 years ago
15

If y=3x 2 find the value of y when x=-3

Mathematics
1 answer:
Sholpan [36]3 years ago
3 0
Y=3(-3) x 2
y= -9 x 2
y=-18
.............
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Please answer this for me
Nezavi [6.7K]

\sqrt{3Answer:

Step-by-step explanation:

take 45 degree as reference angle

using sin rule

sin 45=opposite/hypotenuse

1/\sqrt{2=x/26

x=26/\sqrt{2

x=13\sqrt{2

x=18.4

4 0
3 years ago
Find the greatest common factor. Show work!
zvonat [6]

Answer:

4y

Step-by-step explanation:

Because it is the GCF of the numbers and it can't have an exponent since 16y has none.

3 0
3 years ago
What is the best estimate for the product of 289 and 7
navik [9.2K]
The answer is 296 hope it helps
5 0
3 years ago
ASAP What is the lateral area of this regular octagonal pyramid?? Explain your answer if you can plz thanks
Archy [21]
The lateral area would be 298.7 cm².

The lateral area is the area of all of the lateral faces of the pyramid.  There are 8 triangles making up the lateral faces.  Each has a base of 6.6.  The formula for the area of a triangle is

A=1/2bh,

so we still need the height of the triangle.

The height of each lateral triangle is the slant height of the pyramid.  The slant height of the pyramid forms a right triangle with the height of the pyramid and the "radius" as it were of the pyramid.  Thus we use the Pythagorean theorem:

8²+8²=h²
64+64=h²
128=h²
√128=√(h²)
8√2 = h

Substituting this into our area formula we have:
A=1/2(6.6)(8√2)

We will go ahead and multiply this by 8, since there are 8 lateral faces:
LA=8(1/2)(6.6)(8√2)
LA = 298.7
3 0
4 years ago
Read 2 more answers
I need help no kap slide an answer
Zolol [24]

Answer:

The answer is A. Angles are proportional, side lengths are larger.

Step-by-step explanation:

That’s because scale factors greater than one make a shape larger, and the angles are proportional it's the lengths of the size that change.

7 0
3 years ago
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