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miv72 [106K]
3 years ago
14

Which trinomial is the product of the expression below? (2r-5)(r+10

Mathematics
1 answer:
kkurt [141]3 years ago
8 0
2r²+15r-50

hope this helps

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For a group of 100 people, compute(a) the expected number of days of the year that are birthdays of exactly 3 people.(b) the exp
Scilla [17]

Answer:

Step-by-step explanation:

Leaving leap years, a year contains 365 days.

For a group of 100 people, each person is independent of the other and probability of any day being his birthday has a chance of

\frac{1}{365}

a) Probability that  exactly 3 people have same birthday = \frac{1}{365^3}

Each day is independent of the other

And hence no of days having exactly 3 persons birthday out of 100 persons is binomial with n = 365 and p = \frac{1}{365^3}

Expected value of days = np = \frac{1}{365^2}

b) Distinct birthdays is binomail with p =1/365 and n = 365

Hence

expected value = np =1

4 0
4 years ago
What is the value of 9 cubed?<br><br> 18<br><br> 27<br><br> 81<br><br> 729
exis [7]
Answer is 729

9x9x9 = 729
7 0
3 years ago
Read 2 more answers
Which state stood to lose THE MOST representatives in Congress if slaves 6 points
vovangra [49]

Step-by-step explanation:

United States congressional apportionment is the process[1] by which seats in the United States House of Representatives are distributed among the 50 states according to the most recent decennial census mandated by the United States Constitution. Each state is apportioned a number of seats which approximately corresponds to its share of the aggregate population of the 50 states.[2] However, every state is constitutionally guaranteed at least one seat.



Allocation of congressional districts in the House of Representatives after the 2010 U.S. Census



Allocation of congressional districts after the 2000 U.S. Census



The 435 seats of the House grouped by state (post-2010 Census reapportionment)

The number of voting seats in the House of Representatives has been 435 since 1913, capped at that number by the Reapportionment Act of 1929—except for a temporary (1959–1962) increase to 437 when Alaska and Hawaii were admitted into the Union.[3] The Huntington–Hill method of equal proportions has been used to distribute the seats among the states since the 1940 census reapportionment.[1][4] Federal law requires the Clerk of the United States House of Representatives to notify each state government of the number of seats apportioned to the state no later than January 25 of the year immediately following each decennial census.

The size of a state's total congressional delegation (which in addition to representative(s) includes 2 senators for each state) also determines the size of its representation in the U.S. Electoral College, which elects the U.S. president.

5 0
3 years ago
What is the scientfic notation of 0.05
vredina [299]

Answer:

5×10⁻²

Step-by-step explanation:

  • Move the decimal so there is one non-zero digit to the left of the decimal point.
  • The number of decimal places you move will be the exponent on the 10. a.  If the decimal is being moved to the right, the exponent will be negative.

        b.  If the decimal is being moved to the left, the exponent will be positive.

  • Therefore. The answer is 5×10⁻²
8 0
3 years ago
If C is the line segment from 7 3 to 0 0 find the value of the line integral C 4y2i xj dr
saul85 [17]
Parameterize C by

\mathbf r(t)=(x(t),y(t))=(1-t)(7,3)+t(0,0)=(7-7t,3-3t)

where 0\le t\le1. Then

\mathrm d\mathbf r=(-7\,\mathbf i-3\,\mathbf j)\,\mathrm dt

and the line integral is equivalent to

\displaystyle\int_C(4y^2\,\mathbf i+x\,\mathbf j)\cdot\mathrm d\mathbf r=\int_0^1(4(3-3t)^2\,\mathbf i+(7-7t)\,\mathbf j)\cdot(-7\,\mathbf i-3\,\mathbf j)\,\mathrm dt
\displaystyle=\int_0^1(-252t^2+525t-273)\,\mathrm dt=-\dfrac{189}2
7 0
3 years ago
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