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julia-pushkina [17]
3 years ago
14

Vince is saving for a new mobile phone. The least expensive model Vince likes costs $225.90. Vince has saved $122.35

Mathematics
1 answer:
vampirchik [111]3 years ago
5 0

Answer:

No, he is not correct.

Step-by-step explanation:

$103.55 is the minimum, not maximum, amount that he should save. If he adds the $103.55 to his current total, he can only by the least expensive model. However, he may want to buy more than that model.

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astraxan [27]

Answer:

The answer is

Step-by-step explanation:

6 0
3 years ago
What is the value of 5k + m when k = -3 and m = -<br> -9?<br> A. -60<br> B. -30<br> C.-24<br> D. -6
sladkih [1.3K]

Answer:

C. -24

Step-by-step explanation:

5k + m \\ k =  - 3 \\ m =  - 9

Plug in values into the given equation

5( - 3) + ( - 9) \\  - 15 - 9 \\  =  - 24

6 0
3 years ago
There are 210210210 students in a twelfth grade high school class. 909090 of these students have at least one sister and 1051051
BlackZzzverrR [31]

Answer:

(1) The value of P (A) is 0.4286.

(2) The value of P (B) is 0.50.

(3) The value of P (A ∩ B) is 0.2143.

(4) The the value of P (B|A) is 0.50.

(5) The events <em>A</em> and <em>B</em> are independent.

Step-by-step explanation:

The events are defined as follows:

<em>A</em> = a student in the class has a sister

<em>B</em> = a student has a brother

The information provided is:

<em>N</em> = 210

n (A) = 90

n (B) = 105

n (A ∩ B) = 45

The probability of an event <em>E</em> is the ratio of the favorable number of outcomes to the total number of outcomes.

P(E)=\frac{n(E)}{N}

The conditional probability of an event <em>X</em> provided that another event <em>Y</em> has already occurred is:

P(X|Y)=\frac{P(A\cap Y)}{P(Y)}

If the events <em>X</em> and <em>Y</em> are independent then,

P(X|Y)=P(X)

(1)

Compute the probability of event <em>A</em> as follows:

P(A)=\frac{n(A)}{N}\\\\=\frac{90}{210}\\\\=0.4286

The value of P (A) is 0.4286.

(2)

Compute the probability of event <em>B</em> as follows:

P(B)=\frac{n(B)}{N}\\\\=\frac{105}{210}\\\\=0.50

The value of P (B) is 0.50.

(3)

Compute the probability of event <em>A</em> and <em>B</em> as follows:

P(A\cap B)=\frac{n(A\cap B)}{N}\\\\=\frac{45}{210}\\\\=0.2143

The value of P (A ∩ B) is 0.2143.

(4)

Compute the probability of <em>B</em> given <em>A</em> as follows:

P(B|A)=\frac{P(A\cap B)}{P(A)}\\\\=\frac{0.2143}{0.4286}\\\\=0.50

The the value of P (B|A) is 0.50.

(5)

The value of P (B|A) = 0.50 = P (B).

Thus, the events <em>A</em> and <em>B</em> are independent.

6 0
3 years ago
What is the length of the unknown side of the right triangle? (1 point)
scoundrel [369]

Answer:

The answer is a

Step-by-step explanation:

4 0
3 years ago
Alexander makes a model of the Great Pyramid of Giza with the dimensions shown.
Leviafan [203]

Answer:

The area of the square base is 100 in.2.

The area of each triangular face is 40 in.2.

Alexander will need 260 in.2 of paint.

Step-by-step explanation:

I dan't have an explanation I just guessed.

7 0
3 years ago
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