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ArbitrLikvidat [17]
3 years ago
8

Plz help math 50 points asp and Brianliest

Mathematics
2 answers:
Alja [10]3 years ago
5 0
It’s kinda hard to see it
hjlf3 years ago
4 0

Answer:

Step-by-step explanation:

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Which of the following expressions is written in scientific notation? 0.2 × 10^-5 31.4 × 10^4 13 × 10^4 1 × 10^-3
saul85 [17]

Answer:

0.2 × 10^-5 31.4

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which expression is equivalent to 5^6
Vlad1618 [11]

Answer:

125*125

Step-by-step explanation:

5^6 means 6 5's multiplied together

5*5*5*5*5*5

25*5*5*5*5

125*5*5*5

125*125

6 0
2 years ago
Read 2 more answers
Solve [3(4-1)-7] - [6-(4-9)]
d1i1m1o1n [39]

Answer:

-9

Step-by-step explanation:

7 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
Match the labeled points on the graph to statements about their coordinates Two numbers with a sum of 2
Kamila [148]

Answer:

see explanation!

Step-by-step explanation:

Line N

  • A set of points where the coordinates of each point have a sum of 2

Line M

  • A set of points where the y-coordinates of each point is 10 less than its x-coordinate

Any coordinate on N has a sum of 2.

Any coordinate on M has a y that is 10 less than the x.

6 0
2 years ago
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