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Lilit [14]
3 years ago
15

Solve 3^2x+3 = 243 for x. A. x = 1 B. x = 10 C. x = 2 D. x = 2/5

Mathematics
1 answer:
Gnoma [55]3 years ago
8 0
First get rid of the exponent: 6x + 3 = 243. then subtract 3 from both sides: 6x = 240. lastly divide both side by 6: x = 40. be sure to check your work by plugging it back in.
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1. A chord is 22 cm long. It is 60 cm from the center of the circle.
mezya [45]

Answer:

Radius, r = 61 cm

Step-by-step explanation:

According to the attached figure, we have,

Length of chord, AB = 22 cm

Such that, AP = PB = 11 cm

OP = 60 cm

It is required to find the radius of the circle. We know that radius of a circle is perpendicular to chord. So, APO forms a right angled triangle. Using Pythagoras theorem to find the radius of circle. Let it is r. So,

r^2=60^2+11^2\\\\r=61\ cm

So, the radius of the circle is 61 cm.

3 0
3 years ago
A feasible region is bounded by the constraints:   20 20 4 5 0.25 y x y x y x            The objective function is P
aev [14]
I think it is C I am just guessing
3 0
3 years ago
What is the difference of two positive rational number always positive?
Alexeev081 [22]
No, while the difference represents the absolute magnitude of two numbers . . . for example . . .

The difference between 5 and 2 is . . . 3
The difference between 6.4 and 9.5 is . . . 3.1

 . . . there is still the chance that the difference may be zero . . . in which case the difference is neither positive nor negative

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6 0
3 years ago
Can someone explain how they got the answer for this?
MrRissso [65]

Answer:

y = 6x + 4

Step-by-step explanation:

We know the equation is linear.  First, use two points to find the slope of the line.

m = (y₂ − y₁) / (x₂ − x₁)

m = (10 − 4) / (1 − 0)

m = 6

The y-intercept is 4.  So the equation of the line is:

y = mx + b

y = 6x + 4

3 0
3 years ago
Help please, kind of confused
Anvisha [2.4K]

Answer:

Step-by-step explanation:

Yikes. This is quite a doozy, so pay attention. We will begin by factoring by grouping. Group the first 2 terms together into a set of parenthesis, and  likewise with the last 2 terms:

(2d^4+6d^3)-(18d^2-54d) and factor out what's common in each set of parenthesis:

2d^3(d+3)-18d(d+3). Now you can what's common is the (d + 3), so factor that out now:

(d+3)(2d^3-18d) BUT in that second set of parenthesis, we can still find things common in both terms, so we continue to factor that set of parenthesis, carrying with us the (d + 3):

(d+3)2d(d^2-9) BUT that second set of parenthesis is the difference of perfect squares, so we continue factoring, carrying with us all the other stuff we have already factored:

(d+3)2d(d+3)(d-3). That's completely factored, but it's not completely simplified. Notice we have 2 terms that are identical: (d + 3):

2d(d+3)^2(d-3) is the completely factored and simplified answer, choice 3)

3 0
3 years ago
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