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3 years ago

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There are 15 pieces of fruit in a bowl and six of them are apples. What percentage of the pieces of fruit in the Bowl are apples

1 answer:

aleksklad [387]3 years ago

3 0

Answer:

40%

Step-by-step explanation:

amount of apples = 6

total amount of fruits = 15

percentage of apples

= 6/15 x 100%

= 40%

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Use the difference of two squares identity to factor each of the following expressions. (a) x²-81 (b) (3x+y)² -(2y)² (c) 4-(x-1)

ioda

Answer:

a) $x^2-9^2=(x+9)(x-9)$

b) $(3x+y)^2-(2y)^2=(3x+3y)(3x-y)$

c) $2^2-(x-1)^2=(1+x)(3-x)$

d) $(x+2)^2-(y-2)^2=(x+y)(x-y+4)$

Explanation:

Factor the expression using difference of two squares.

Formula:

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

Part a) x²-81

write 81 as perfect square.

$x^2-9^2$

$a\rightarrow x$

$b\rightarrow 9$

$x^2-9^2=(x+9)(x-9)$

Part b) (3x+y)² -(2y)²

$a\rightarrow 3x+y$

$b\rightarrow 2y$

$(3x+y)^2-(2y)^2=(3x+y+2y)(3x+y-2y)$

$(3x+y)^2-(2y)^2=(3x+3y)(3x-y)$

Part c) 4-(x-1)²

write 4 as perfect square,

$2^2-(x-1)^2$

$a\rightarrow 2$

$b\rightarrow x-1$

$2^2-(x-1)^2=(2+x-1)(2-x+1)$

$2^2-(x-1)^2=(1+x)(3-x)$

Part d) (x+2)²-(y-2)²

$a\rightarrow x+2$

$b\rightarrow y-2$

$(x+2)^2-(y-2)^2=(x+2+y-2)(x+2-y+2)$

$(x+2)^2-(y-2)^2=(x+y)(x-y+4)$

4 0

3 years ago

4<br> 1<br> <br> (12−8×)= <br> 3<br> 2<br> <br> (6×)

Tpy6a [65]

creo que es 32 por la cultura

3 0

3 years ago

a sound wave travels through iron at a rate of 5120m/s. at what rate does the sound wave travels in km/h?

Sladkaya [172]

5120 m/s = 18.432<span> kph

</span>Conversion base : 1 mps = 3.6 kphConversion base : 1 kph = 0.27777777777778 mps<span>
</span>

3 0

3 years ago

A culture of bacteria has an initial population of 41000 bacteria and doubles every 5 hours. Using the formula P_t = P_0\cdot 2^

vodomira [7]

Answer:

285541

Step-by-step explanation:

According To The Question,

Given, A culture of bacteria has an initial population of 41000 bacteria and doubles in every 5 hours & $P_{t} = P_{i}*(2)^{\frac{d}{t} }$ .

Now, for the population of bacteria in the culture after 14 hours is $P_{t}$ . We have Initial Population( $P_{i}$ )=41000 , d=14 & t=5 .

Put These Value in Above Formula, We get

$P_{t} = 41000*(2)^{\frac{14}{5} }$

$P_{t} = 41000*2^{2.8}$

$P_{t} = 41000*(6.9644)$

$P_{t} =$ 285540.5847 ≈ 285541

3 0

3 years ago

How do you do this problem and give steps 22 divided by 100x400

ExtremeBDS [4]

Step-by-step explanation:

Gosh, this is so easy.

The answer is 40000

Divided by 22

Not possible but will be 1818.18

4 0

3 years ago

Read 2 more answers