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dybincka [34]
3 years ago
14

(1) A student writes a five question multiple-choice quiz. Each question has four possible responses. The student guesses at ran

dom for each question. Find the probability that the student has only one correct answer. A. 0.40 B. 0.53 C. 0.25 D. 0.20
Mathematics
1 answer:
soldi70 [24.7K]3 years ago
4 0

Answer:

(D) 0.20

Step-by-step explanation:

There are 5 questions in the quiz.

Each question has 4 options to pick from

The student guesses at random for each (and every) question.

Find the probability that the student has only 1 correct answer.

- Focusing less on the "4" options and more on the "5" questions in the quiz, the probability that the student has only 1 correct answer out of 5 is

1/5 = 0.20

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I’n the Miller family there are 8 boys and 12 girls what is the ratio of boys to girls ?
Rina8888 [55]

Answer:

4:6

Step-by-step explanation:

because 2 is common factor of 8 and 12 so 8 divided by 2 equal 4 and 12 divided by 2 equals 6

6 0
3 years ago
3y +(-2) +48=180 solve for y
GalinKa [24]

Answer:

The answer to the problem is

y = 134/3

Step-by-step explanation

7 0
3 years ago
Write the equation in standard form y+6=(x+4)
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Answer:

4 x  −  y  =  − 18

Step-by-step explanation:

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5 0
3 years ago
Find the perimeter P of ▱JKLM with vertices J(−3,−2), K(−5,−5), L(1,−5), and M(3,−2). Round your answer to the nearest tenth, if
Bezzdna [24]

Given:

Vertices of JKLM are J(−3,−2), K(−5,−5), L(1,−5), and M(3,−2).

To find:

The perimeter P of a parallelogram JKLM.

Solution:

Distance formula:

D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Using distance formula, we get

JK=\sqrt{\left(-5-\left(-3\right)\right)^2+\left(-5-\left(-2\right)\right)^2}

JK=\sqrt{\left(-5+3\right)^2+\left(-5+2\right)^2}

JK=\sqrt{\left(-2\right)^2+\left(-3\right)^2}

JK=\sqrt{4+9}

JK=\sqrt{13}

Similarly,

KL=\sqrt{\left(1-\left(-5\right)\right)^2+\left(-5-\left(-5\right)\right)^2}=6

LM=\sqrt{\left(3-1\right)^2+\left(-2-\left(-5\right)\right)^2}=\sqrt{13}

JM=\sqrt{\left(3-\left(-3\right)\right)^2+\left(-2-\left(-2\right)\right)^2}=6

Now, perimeter P of ▱JKLM is

P=JK+KL+LM+JM

P=\sqrt{13}+6+\sqrt{13}+6

P=2\sqrt{13}+12

P=2(3.61)+12

P=7.22+12

P=19.22

P\approx 19.2

Therefore, the perimeter P of ▱JKLM is 19.2 units.

3 0
3 years ago
Triangle XYZ has vertices X(1, 3), Y(0, 0), and Z(–1, 2). The image of triangle XYZ after a rotation has vertices
sleet_krkn [62]
The correct answer is 
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3 years ago
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