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Colt1911 [192]
1 year ago
7

A student has to take two quizzes tomorrow. He has only enough time to study for one of them. The history quiz has 5 true or fal

se questions. The science quiz has 3 multiple choice questions.

Mathematics
2 answers:
nalin [4]1 year ago
6 0

Answer:

Answer:

Option B is correct.

Miguel should study for the Science quiz as he will do worse in that quiz by guessing.

Step-by-step explanation:

Miguel has to take two quizzes

1) 4 true or false questions on History with a 0.5 chance of acing the quiz

Expected number of correct questions = np

n = number of questions

p = probability of acing the test

Expected number of correct questions = 4 × 0.5 = 2

2) 3 multiple choice questions on Science with a 0.2 chance of acing the quiz.

Expected number of correct questions = 0.2 × 3 = 0.6

It is evident that guessing would yield a worse result in the Science quiz with less than 1 question expected to be correct than history, where he is still expected to get 2 questions correctly by guessing.

dalvyx [7]1 year ago
5 0

Answer:

He is correct

Step-by-step explanation:

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Points E, F, and D are located on circle C. Circle C is shown. Line segments E C and D F are radii. Lines are drawn from points
elena55 [62]

Answer:

Option (1). 34°

Step-by-step explanation:

From the figure attached, CE and CD are the radii of the circle C.

Central angle CED formed by the intercepted arc DE = 68°

Since measure of an arc = central angle formed by the intercepted arc

Therefore, m∠CED = 68°

Since m∠EFD = \frac{1}{2}(m\angle ECD) [Central angle of an intercepted arc measure  the double of the inscribed angle by the same arc]

Therefore, m∠EFD = \frac{1}{2}(68)

                               = 34°

Therefore, Option (1) 34° will be the answer.

7 0
2 years ago
Read 2 more answers
Kiara baked 30 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for her friends at school. She wan
Ludmilka [50]
You find the gcf/ greatest common factor of both numbers which is 6, so 6 plastic containers.
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2 years ago
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Jason Aldeen bought a house for $275,000. He made a down payment of 15%. The interest rate is 4.2% for 15 years.
Tpy6a [65]

Answer:

Step-by-step explanation:

Jason's down payment= $41250

Amount he needs to borrow is

275000-41250 = $233750

Jason's monthly payment would be

248476.25/180 = $1380.42

The original cost of the house that Jason Aldeen bought is $275,000. He made a down payment of 15%. This means he paid 15% of the original cost of the house. Therefore,

Jason's down payment is 15% of $275000

= 15/100 × 275000 =0.15×275000

=$41250

Since Jason's down payment is smaller than the original cost of the house, he would need to borrow.

Amount he needs to borrow is

275000-41250 = $233750

If Jason borrows $233750 at a rate of 4.2% for 15 years

Total interest on $233750 for 15 years will be

= (233750×4.2×15) /100

= 14726250/100 = $14726.25

Total amount to be paid for 15 years will be amount borrowed + interest

=233750 + 14726.25 = $248476.25

Converting 15 years to months,

15 × 12 months = 180 months.

Jason's monthly payment would be

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3 0
1 year ago
Grace is standing 14 feet from a lighthouse and Kelly is standing 12 feet from Grace. The angle that Grace looks up to see the t
rodikova [14]
The height of the lighthouse is :
h = 14 ft ( same as the distance from Kelly to a lighthouse ).
tan y = 14 / ( 14 + 12 ) = 14 / 26 = 0.5384615
y = tan^(-1) 0.5384615  = 28.3°
Answer: y = 28.3°
4 0
2 years ago
Tamika had a 4 by 7 inch photograph enlarged both length and width were increased to 130% of the original size find the perimete
marusya05 [52]
Ahemmm whatever% of anything is just (whatever/100) * anything.

therefore, 130% of 4 is just (130/100) * 4

and 130% of 7 is just (130/100) * 7

so the new size is 

\bf 4+\left(\frac{130}{100}\cdot 4  \right)\implies 4+\cfrac{26}{5}\implies \cfrac{46}{5}\implies 9\frac{1}{5}
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7+\left( \frac{130}{100}\cdot 7 \right)\implies 7+\cfrac{91}{10}\implies \cfrac{161}{10}\implies 16\frac{1}{10}
4 0
2 years ago
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