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2 years ago

The cost of a type of educational toy is expressed as y = 3x + 2. Find the rate of change.

Mathematics

1 answer:

NNADVOKAT [17]2 years ago

6 0

Answer:

Step-by-step explanation:

Rate of Change is the same as Slope. According to the Slope-Intercept Formula, y = mx + b, m is the Rate of Change [Slope].

I am joyous to assist you anytime.

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The length of a rectangle is four times its width. If the perimeter of the rectangle is 90 cm, find its area

Sunny_sXe [5.5K]

Answer:

324

Step-by-step explanation:

L = 4W

P = 2L + 2W = 90

---

2L + 2W = 90

2(4W) + 2W = 90

8W + 2W = 90

10W = 90

---

W = 9

L = 36

---

A = 324

---

7 0

3 years ago

What expression represents the area???

galben [10]

Answer:

Step-by-step explanation:

Area is width times height.

(5p-7)(3p+4)

Multiply using FOIL method

(First, outer, inner, last)

(5p*3p) + (5p*4) + (-7*3p) + (-7*4) =

15p² + 20p -21p - 28 =

15p²-p -28 =

B is the closest one. They might have made a typo.

6 0

2 years ago

Camila is working two summer jobs, making $10 per hour lifeguarding and $6 per hour walking dogs. Last week Camila worked 5 more

sleet_krkn [62]

Answer 650

Step-by-step explanation:

If you add $10 and $6 you get $16 then you add $114 you get $130 the you multiply it by 5 then you get the total of $650

3 0

3 years ago

Read 2 more answers

A coin, having probability p of landing heads, is continually flipped until at least one head and one tail have been flipped. (a

Natali [406]

Answer:

(a)

The probability that you stop at the fifth flip would be

$p^4 (1-p) + (1-p)^4 p$

(b)

The expected numbers of flips needed would be

$\sum\limits_{n=1}^{\infty} n p(1-p)^{n-1} = 1/p$

Therefore, suppose that $p = 0.5$ , then the expected number of flips needed would be 1/0.5 = 2.

Step-by-step explanation:

(a)

Case 1

Imagine that you throw your coin and you get only heads, then you would stop when you get the first tail. So the probability that you stop at the fifth flip would be

$p^4 (1-p)$

Case 2

Imagine that you throw your coin and you get only tails, then you would stop when you get the first head. So the probability that you stop at the fifth flip would be

$(1-p)^4p$