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MA_775_DIABLO [31]
4 years ago
7

Did I do this correctly?

Mathematics
2 answers:
Agata [3.3K]4 years ago
7 0
Yes, -3.14 × -5 does equal 15.7
lapo4ka [179]4 years ago
4 0
15.7

Hope this helps(:
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Solve the following quadratic equation:<br> (3x – 5)2 = 4
Katarina [22]

Answer:

Step-by-step explanation:

It is mandatory (required) to use " ^ " for exponentiation:

(3x – 5)^2 = 4

Taking the square root of both sides, we get

3x - 5 = ±2, or

3x = 5 ±2, or

(a) 3x = 7 => x = 7/3, and

(b) 3x = 3, or x = 1

7 0
3 years ago
Write the following Arithmetic sequence using an Explicit Formula: a1 = 8, an = an-1 -2
bogdanovich [222]

Answer:

an = 8 - 2*(n - 1)

Step-by-step explanation:

a1 ; .... ; an-1 ; an

r = an - an-1

r = (an-1 - 2) - an-1

r = an-1 - 2 - an-1

r = -2

So:

an = a1 + r*(n - 1)

an = 8 + (-2)*(n - 1)

an = 8 - 2*(n - 1)

4 0
3 years ago
1. Find the equation of a normal to the curve y= 2² - 2x +3 at the point (3,0)​
Gala2k [10]

I think you meant to say the equation is

y = 2x² - 2x + 3

Differentiate both sides with respect to x :

dy/dx = 4x - 2

At the point (3, 0), the slope of the tangent line is dy/dx(3) = 4•3 - 2 = 10. Then the normal line to the curve at (3, 0) has slope -1/10.

Using the point-slope formula, the equation of the normal line is

y - 0 = -1/10 (x - 3)   ⇒   y = (3 - x)/10

5 0
2 years ago
A circle with the equation (x + 3)2 + (y - 2)2 = 25 is reflected over the line x = 2.
Elza [17]
So the circle has and equation of (x+3)2+(y-2)2=25 and its reflected over the line of two. So first in your problem is to simplify the function which could represent the y=mx+b. So it goes like this:
2x+6+2y-4=25
-2y=-2x-6+25
y=-2x-6+25/-2
y=x-25/2

so it means the answer would be in this kind of formula and i hope you can solve it cause im confused also so here is the formula:
(x-h)2-(y-k)2=25


7 0
3 years ago
A mountain bike wheel has a diameter of 26 in.
Dmitry_Shevchenko [17]
26 x 3.14 = 81.64 in. The circumference can by found by multiplying pi by the diameter of the circle.
7 0
4 years ago
Read 2 more answers
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