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lesantik [10]
3 years ago
8

Please help me please!!!

Mathematics
1 answer:
Inessa [10]3 years ago
6 0

Answer:

A

Step-by-step explanation:

Put x as -3.

2(-3) - 2

= -8

2(-3)² + 14(-3) + 5

= -19

Divide both terms.

-8/-19 = 8/19

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How do i define surface area and explain how we go about solving it in mathematics?
fredd [130]

Answer:

Surface area is the area inside of a shape or closed place. There are differnet formulas in math to get the surface area like length X width

3 0
3 years ago
What is the inverse of [tex] x^{2} -2?
Mnenie [13.5K]
Assuming you want the inverse of f(x)=x²-2,

f(x)=x²-2
repalce f(x) with y
y=x²-2
switch x and y
x=y²-2
solve for y
x=y²-2
x+2=y²
√(x+2)=y
replace y with f⁻¹(x)
f⁻¹(x)=√(x+2)

the inverse is √(x+2)
8 0
4 years ago
Y = x^2+ 2x + 7<br> y = 7 + x
Lostsunrise [7]

Answer:

when x=0 y=7

when x=-1 y= 6

Step-by-step explanation:

to find x & y we can make the two x expressions equal to each other

x²+2x+7=7+x (we are going to set it equal to zero to find the roots/the x value)

x²+x=0

x(x+1)=0

x=0 x=-1 (two solutions for x)

now we just plug in these values and find the y values

when x=0 y=7

when x=-1 y= 6

5 0
4 years ago
Write the following in vertical columns. Then subtract.<br><br>b) 4a - 7c from 4a - 3b + 8c<br>​
andreyandreev [35.5K]

It is instructed to subtract (2a−3b+4c) from the sum of (a+3b−4c),(4a−b+9c) and (−2b+3c−a).

So, First we will do the sum of the three given polynomials,

Sum =(a+3b−4c)+(4a−b+9c)+(−2b+3c−a)

=(a+4a−a)+(3b−b−2b)+(−4c+9c+3c)

=4a+8c

Now, we can perform the subtraction,

∴ Required difference

=(4a+8c)−(2a−3b+4c)

=4a+8c−2a+3b−4c

=2a+3b+4c

6 0
3 years ago
A triangle has sides with lengths of 37 yards, 54 yards, and 62 yards. Is it a right triangle?
Marianna [84]

Answer:

Step-by-step explanation:

Are the sides consistent with the Pythagorean theorem?

37² + 54² ≟ 62²

1369 + 2916 = 4285 ≠ 62²

Not a right triangle.

7 0
3 years ago
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