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Marina CMI [18]
2 years ago
10

How many terms are in the following expression? 2x + 5t -6

Mathematics
1 answer:
Leni [432]2 years ago
8 0
3 terms are in the expression
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[Exponential] |x|-2|-1|0|1|2| |y|2/9|2/3|2|6|18| When the x-value increases by 1, the y-value ________ (b-value)
dimaraw [331]

Answer:

b = 3

The value of y triples

Step-by-step explanation:

Given:

\begin{array}{cccccc}x & {-2} & {-1} & {0} & {1} & {2} \ \\ y & {\frac{2}{9}} & {\frac{2}{3}} & {2} & {6} & {18} \ \end{array}

Required

Determine b value

An exponential equation is:

y = ab^x

When x = 0; y =2

So:

y = ab^x

2 = a * b^0

2 = a

a = 2

When x = 2; y = 18

So:

18 = a * b^2

Substitute 2 for a

18 = 2 * b^2

Divide by 2

9 =  b^2

Take positive square roots of both sides

3 = b

b = 3

5 0
2 years ago
Photo provided<br> Help me asap plzzzz
const2013 [10]

Answer: 0.07 (choice B)

===================================================

Explanation:

Let's define two events: B = hitting bullseye, and, T = hitting the third (outermost) ring

To figure out the probabilities of each event happening, we need to find the areas of each region. The bullseye is a circle with radius 6 inches (half of diameter 12), so the area is roughly...

A = pi*r^2 = pi*6^2 = 36pi

The radius of the outermost circle is 6+5+5 = 16 inches, leading to an area of

A = pi*r^2 = pi*16^2 = 256pi

So P(B) = (36pi)/(256pi) = 9/64 is the probability of hitting bullseye

-----------------

The area of the third ring is equal to the difference of the overall largest circle and the second largest circle.

The second largest circle has a radius of 6+5 = 11 inches with area pi*11^2 = 121pi square inches

So the third ring has an area of 256pi - 121pi = 135pi square inches

P(T) = probability of hitting the third ring

P(T) = (135pi)/(256pi)

P(T) = 135/256

-----------------

The last thing to do is to multiply the two probabilities P(B) and P(T). This works because the two events B and T are independent

P(B and T) = P(B)*P(T)

P(B and T) = (9/64)*(135/256)

P(B and T) = 0.07415771484376

P(B and T) = 0.07

8 0
3 years ago
Read 2 more answers
Find f(–3) for the following function
Grace [21]
F(-3) = -2(-3) + 3
f(-3) = 6 + 3
f(-3) = 9
answer

<span>b. 9</span>
6 0
3 years ago
Find the selling price of a book with an original price of $49.95 and a 5% tax rate.please be specific on how the answer is the
borishaifa [10]

Step-by-step explanation:

$52.45

49.95×.05

then add that result to 49.95= answer

3 0
3 years ago
ILL GIVE U BRAINLYIST
nexus9112 [7]

Answer:

c

Step-by-step explanation:

ive had this before

8 0
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