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3 years ago

Please help ASAP! I'm being timed!

Mathematics

2 answers:

son4ous [18]3 years ago

8 0

The answer is 28, hope this helps. haha

VLD [36.1K]3 years ago

7 0

B. 28 meters

You can see that the side opposite of 8 meters are all different sizes, but all three lengths, if you line them all up together, add up to 8 meters. So the two sides add up to 16 meters. Now the other two sides. You can apply the same thing that was said about the 8 meters to the 6 meters side. And then the other side is 3 meters, so you can find the missing length by doing 6-3 = 3 meters (or just see that it also equals six and you can just skip that).

So, now you have 8+8+6+6 (or 3+3, depending on which way you did it) = 28 meters.

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Which function has a simplified base of 4? f(x) = 2 f(x) = 2 f(x) = 4 f(x) = 4

miss Akunina [59]

Answer:

Step-by-step explanation:

I just finished this exam review and it should be f(x)=4(^3sqrt16)^2x

Hope this helps you out!

6 0

3 years ago

An instructor gives her class the choice to do 7 questions out of the 10 on an exam.

Maksim231197 [3]

Answer:

(a) 120 choices

(b) 110 choices

Step-by-step explanation:

The number of ways in which we can select k element from a group n elements is given by:

$nCk=\frac{n!}{k!(n-k)!}$

So, the number of ways in which a student can select the 7 questions from the 10 questions is calculated as:

$10C7=\frac{10!}{7!(10-7)!}=120$

Then each student have 120 possible choices.

On the other hand, if a student must answer at least 3 of the first 5 questions, we have the following cases:

1. A student select 3 questions from the first 5 questions and 4 questions from the last 5 questions. It means that the number of choices is given by:

$(5C3)(5C4)=\frac{5!}{3!(5-3)!}*\frac{5!}{4!(5-4)!}=50$

2. A student select 4 questions from the first 5 questions and 3 questions from the last 5 questions. It means that the number of choices is given by:

$(5C4)(5C3)=\frac{5!}{4!(5-4)!}*\frac{5!}{3!(5-3)!}=50$

3. A student select 5 questions from the first 5 questions and 2 questions from the last 5 questions. It means that the number of choices is given by:

$(5C5)(5C2)=\frac{5!}{5!(5-5)!}*\frac{5!}{2!(5-2)!}=10$

So, if a student must answer at least 3 of the first 5 questions, he/she have 110 choices. It is calculated as:

50 + 50 + 10 = 110

6 0

3 years ago

Find and interpret the mean absolute deviation of the data. 8,12,4,3,14,1,9,13

melomori [17]

Answer:

Step-by-step explanation:

8+12+4+3+14+1+9+13=64, 64/8=8

7 0

2 years ago

Read 2 more answers

Easiest question in the world no joke this time

Volgvan

Question #25:

One way to solve this is by multiplying the number of packages per serving by the number of guests.

1/4 * 16 = 4 packages to serve 16 guests. This means he doesn't have enough.

A second way to solve this is by diving the number of packages by the number of packages it takes to make on serving.

3 1/2 ÷ 1/4 = 14 guests he can serve. This means he doesn't have enough.

Question #26:

First, find common denominators.

2/3 = 8/12

1/4 = 3/12

Second, subtract.

8/12 - 3/12 = 5/12

Therefore, the tank is 5/12 full at the end of the trip.

Question #27:

1/2 is cut off then 1/3 is cut off. This means 3/6 was cut off to bundle newspapers, then 1/6 was cut off to make parcel. In all, 4/6 was cut off the original string. Afterwards, 2/6 was left over. So, just multiply; 2 * 3 = 6.

Therefore, the original string was as a total of 6 meters.

Best of Luck!

3 0

3 years ago

One cell phone plan charges $20 per month plus $.15 per minute used. A second cell phone plan charges $35 per month plus $.10 pe

SOVA2 [1]

20+0.15x = 35+0.10x

0.15x=15+0.10x

0.05x=15

x= 15/0.05

x= 300minutes

check:

300*.015 = 45+20=65

300*0.10 = 30 + 35 = 65

they equal

so number of minutes would be 300

7 0

3 years ago