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3 years ago

Ali finished his history assignment in 1/4

1 answer:

5 0

$\frac{1}{4} \times 3 = \frac{3}{12} \frac{2}{3} \times 4 = \frac{8}{12} \\ \frac{3}{12} + \frac{8}{12} = \frac{11}{12}$

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A forest covers 46,000 acres. A survey finds that 0.6% of the forest is old-growth trees. How many acres of old-growth trees

In-s [12.5K]

Answer: 275 maybe

Step-by-step explanation: i did 46,000 x 0.6% and got 275.

5 0

2 years ago

What is the percent decreases from 10 to 6

EleoNora [17]

It would be 40% decrease

3 0

2 years ago

Read 2 more answers

The length and breath of a rectangle are (a^2 +ab +b^2) units and (a-b) units.Find the area of the rectangle.

pshichka [43]

Answer:

a^3 - b^3.

Step-by-step explanation:

Area = length * breadth

= (a - b)(a^2 + ab + b^2)

= a(a^2 + ab + b^2) - b(a^2 + ab + b^2)

= a^3 + a^2b + ab^2 - a^2b - ab^2 - b^3

Note: the 4 middle terms cancel out. So the answer is

a^3 - b^3.

4 0

2 years ago

Afla un numar,stiind ca: a)jumatatea treimii lui este 25; b)sfertul jumatatii lui este 48; c)treimea sfertului sau,marita cu 17

aalyn [17]

Answer:

(a) 150

(b) 384

(c) 84

(d) 261

(e ) 480

Step-by-step explanation:

(a)

Let 'a' be a number such that the half of his third is 25; i.e.

$\dfrac{1}{2}\times(\dfrac{1}{3}a)=25\\\\\dfrca{1}{2\times3}a=25\\\\\dfrac{1}{6}\times a=25\\\\a=25\times6\\\\a=150$

Hence, the number is 150.

(b)

Let 'b' be the number such that the quarter of his half is 48 i.e.

$\dfrac{1}{4}(\dfrac{1}{2}b)=48\\\\\dfrac{1}{8}b=48\\\\b=48\times8\\\\b=384$

Hence the number is 384.

(c)

Let 'c' be the number such that the third quarter or, increased by 17 is 80.

$\dfrac{3}{4}c+17=80\\\\\dfrac{3}{4}c=80-17\\\\\dfrac{3}{4}c=63\\\\c=\dfrac{63\times4}{3}\\\\c=\dfrac{252}{3}\\\\c=84$

Hence, the number is 84.

(d)

Let 'd' be the number such that its triplet, reduced by 28 is 755

$3d-28=755\\\\3d=755+28=783\\\\d=\dfrac{783}{3}\\\\d=261$

Hence the number is 261.

Let 'e' be the number such that double his third, increased by 80 is 400.

$\\2\dfrac{1}{3}e+80=400\\\\\dfrac{2}{3}e=400-80=320\\\\e=\dfrac{320\times 3}{2}\\\\e=\dfrac{960}{2}\\\\e=480$

Hence, the value of the number is 480.

4 0

3 years ago

The sum of four consecutive even integers is -100. Find the absolute value of the smallest integer.

Talja [164]

Answer:

|–28|=28

Step-by-step explanation:

the four consecutive even integers are –22, –24, –26, –28

the absolute of the smallest is |–28|=28

3 0

2 years ago