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rosijanka [135]

2 years ago

7

An examination consists of three parts. In part A, a student must answer 2 of 3 questions. In part B, a student must answer 6 of

8 questions and in part C, a student must answer all questions. How many choices of questions does the student have?

1 answer:

Andrew [12]2 years ago

5 0

3C2 * 8C6 * 1 = 84 : Use of fundamental theorem of counting

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If a 25 ft rope is cut into two sections with one section 4 times as long as the other section, how long is the shorter piece?

DaniilM [7]

X = short section of rope
4x = longer section of rope

x + 4x = 25
5x = 25
x = 5

…or in other words the shorter piece of rope is 5 feet long

7 0

3 years ago

YOU GO TO THE STORE WITH $100. YOU HAVE A LIST OF THINGS TO BUY THAT WILL COST $70 IN TOTAL. YOU WANT TO BUY OREOS. OREOS COS

madreJ [45]

Answer:

10

Step-by-step explanation:

First, you would subtract 100-70 to get 30

Then, you would do 30/3 to learn that you could still buy 10 packs of Oreos with the remaining money.

5 0

3 years ago

What type of triangle is formed by joining the points D(7, 3), E(8, 1), and

KiRa [710]

D(7, 3), E(8, 1), and F(4, -1)

We calculate the squared distances between the points:

$DE^2 = 1^2 + 2^2 = 5$

$EF^2=4^2+2^2=20$

$DF^2=3^2+4^2=25$

Since $DF^2=DE^2+EF^2$ we have a right triangle with hypotenuse DF.

7 0

3 years ago

One pound of ground beef is $3.09. How much is 4.5 pounds? Round to the nearest hundredth, if necessary.

olga55 [171]

Since 1 pound is $3.09, 4.5 pounds will be:

$4.5*3.09=13.905$

It says to round to nearest hundredth, so your answer is $13.91.

5 0

3 years ago

Read 2 more answers

Please help ? Thanks

rjkz [21]

Try answer C or B because either one could be the right answer

8 0

3 years ago

Read 2 more answers