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3 years ago

Sonja had m books and Alfonzo had twice as many, the two together having 18 books. How do you solve?

Mathematics

2 answers:

raketka [301]3 years ago

4 0

Answer:

sonja has 6 books

Step-by-step explanation:

let m = amount of books sonja has

2m+m=18

combine like terms

3m=18

divide

m=6

Leviafan [203]3 years ago

4 0

Sonja has 6 books because alfronzo has twice as much which means he has 12 books and that’s because we multipled sonja’s amount of books with 2 and added 12+6 = 18 (the amount of all their books together)

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3*2^20-5*2^19/(-2^6)^3 calculate ITS NOT 3145738

lina2011 [118]

Answer:

-2

Step-by-step explanation:

(3×2²⁰-5×2¹⁹)/(-2⁶)³

=[(3×2-5)×2¹⁹]/-(2⁶)³

=[(6-5)×2¹⁹]/-2¹⁸

=1×(-2)

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6 0

3 years ago

Write 25*24*23*22 as a quotient of factorials and as a permutation

Kipish [7]

Answer:

(a)

$25\times 24\times 23\times 22=\frac{25!}{21!}$

(b)

$25\times 24\times 23\times 22=P(25,4)$

Step-by-step explanation:

Quotient of factorials:

we are given

$25\times 24\times 23\times 22$

we can multiply top and bottom term by 21!

$25\times 24\times 23\times 22=\frac{25\times 24\times 23\times 22\times 21!}{21!}$

we can write as

$25\times 24\times 23\times 22=\frac{25!}{21!}$

As a permutation:

we know permutation formula

$P(n,r)=\frac{n!}{(n-r)!}$

now, we can compare and find 'n' and 'r'

$n=25$

$n-r=21$

we can plug back n=25

$25-r=21$

$r=4$

so, we can write

$25\times 24\times 23\times 22=P(25,4)$

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3 years ago

How to find coordinates of a point using ratio

Marat540 [252]

m1=3, m2= 1

point A= (-5,4)

point B=(7,-2)

x=m1x2+m2x1/ m1+m2 , y=m1y2+m2y1 / m1+m2

x= 3×7 +1×-5/3+1 , y= 3×-2+1×4 / 3+1

x= 21-5/4, y= -6+4/4

x= 16/4, y= -2/4

x= 4, y= 0.5

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3 years ago

FUNNY ONE ANSWER ! !!!!!!!!!

lakkis [162]

Answer: trapezoid

Step-by-step explanation: A trapezoid is a quadrilateral

with exactly one pair of parallel sides.

Also, quadrilaterals are two-dimensional shapes.

So it's impossible that's its 3-d.

7 0

3 years ago

Read 2 more answers

Me ayuda con este ejercicio <img src="https://tex.z-dn.net/?f=%28%20%2B%201%29%28%20%2B%203%29" id="TexFormula1" title="( + 1

mario62 [17]

1×3 = 3

answer is + 3

7 0

3 years ago

Sonja had m books and Alfonzo had twice as many, the two together having 18 books. How do you solve?​

Sonja had m books and Alfonzo had twice as many, the two together having 18 books. How do you solve?