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AlexFokin [52]
3 years ago
6

Simplify the expression (-3+4k) - (-2+ 7k)

Mathematics
1 answer:
DedPeter [7]3 years ago
4 0

Answer: −1−3k

Step-by-step explanation:

Distribute:

(−3+4k)−1(−2+7k)

(-3+4k)+{2-7k}

Eliminate redundant parentheses:

(−3+4k)+2−7k

-3+4k+2-7k

Add the numbers:

−3+4k+2−7k

−1+4k−7k

Add the same term to both sides of the equation:

−1+4k−7k

−1−3k

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6 0
3 years ago
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Find the circumference and the area of a circle with radius 5 yd
slavikrds [6]

Answer:

C = 10(pi) yards

A = 25(pi) yards

Step-by-step explanation:

6 0
3 years ago
2. A teacher-student committee consisting of 4 people is to be formed from 5 teachers and 20
ivann1987 [24]

Answer:

If the committee must consist at least one student, the probability is 99.96%

Step-by-step explanation:

Given;

number of teachers = 5

number of students = 20

Total number of committee members = 25

Possible outcome of all the members in the 4 committee = 25C₄ ways

= 12650

If the committee must consist at least one student, then the possible outcome;

= Total possible outcome - committee with no student

= 25C₄ ways - 5C₄ ways (all committee members are teachers)

= 12650 - 5

= 12645

The probability that the committee will consist at least one student;

= 12645 / 12650

= 0.9996

= 99.96%

Therefore, if the committee must consist at least one student, the probability is 99.96%

4 0
2 years ago
Find the value of x for which ABCD must be a parallelogram.
lbvjy [14]
<span>parallelogram, opposite sides are equal
</span>so
5x - 8 = 2x + 7
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hope it helps
3 0
2 years ago
Seperate 90 into two parts so that one part is four times the other
aalyn [17]

Answer:

18 and 72

Step-by-step explanation:

the smaller part can be assigned as x while the larger will be 4x. Both numbers need to add up to 90, giving the equation: 4x+x = 90

Solve:

4x+x = 90

5x = 90

x = 18

4x = 72

5 0
2 years ago
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