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2 years ago

Which statement below is not true about plant cells.

Mathematics

2 answers:

Nostrana [21]2 years ago

8 0

Number 4 because it is not true

erastovalidia [21]2 years ago

6 0

Answer:

Step-by-step explanation:

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I have no idea what this is can someone please help

siniylev [52]

Plug in the number from f(x) with the x value

For example
f(9)=(9)^2-25
81-25
F(9)=56

That’s one answer.

Hope it helps!

4 0

1 year ago

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What are all the expressions that are equal to 16x-12-24x+4

Sedaia [141]

Answer:

-8x-8

Step-by-step explanation:

6 0

2 years ago

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Find AC, round to the nearest whole number

xxMikexx [17]

Triangles are 180 total so just add 118 and 22 then subtract it from 180 for your answer

8 0

3 years ago

Can SOMEBODYYY please do the maths!!! PLeassssssssssssseeeeeeee

Anna11 [10]

Answer:

<h2>see below</h2>

Step-by-step explanation:

<h3>Question-6:</h3>

we are given a equation

$\sf \displaystyle \: \log_{4}( - x) + \log_{4}( 6 - x) = 2$

to solve so

recall logarithm multiplication law:

$\sf \displaystyle \: \log_{4}( - x \times (6 - x)) = 2$

simplify multiplication:

$\sf \displaystyle \: \log_{4}( - 6 x + {x}^{2} ) = 2$

remember $\displaystyle \log_{4}(4^2)=2$

$\sf \displaystyle \: \log_{4}( - 6 x + {x}^{2} ) = \log_{4}( {4}^{2} )$

cancel out $\log_4$ from both sides:

$\sf \displaystyle \: - 6 x + {x}^{2} = {4}^{2}$

simplify squares:

$\sf \displaystyle \: - 6 x + {x}^{2} = 16$

move left hand side expression to right hand side and change its sign:

since we are moving left hand side expression to right hand side there'll be only 0 left in the left hand side

$\sf \displaystyle \: - 6 x + {x}^{2} - 16 = 0$

rewrite it to standard form i.e ax²+bx+c=0

$\sf \displaystyle \: {x}^{2} - 6x - 16 = 0$

rewrite -6x as 2x-8x:

$\sf \displaystyle \: {x}^{2} + 2x - 8x - 16 = 0$

factor out x and 8:

$\sf \displaystyle \: x {(x}^{} + 2) - 8(x + 2) = 0$

group:

$\sf \displaystyle \: (x - 8){(x}^{} + 2) = 0$

$\displaystyle \: x = 8 \\ x = - 2$

$\therefore \: x = - 2$

<h3>Question-7:</h3>

move left hand side log to right hand side:

$\displaystyle \: \log(x ) + \log(x - 21) = 2$

use mutilation logarithm rule;

$\displaystyle \: \log( {x}^{2} - 21x) = 2$

$\log(10^2)=2$ so

$\displaystyle \: \log( {x}^{2} - 21x) = \log({10}^{2} )$

cancel out log from both sides:

$\displaystyle \: {x}^{2} - 21x = 100$

make it standard form:

$\displaystyle \: {x}^{2} - 21x - 100= 0$

factor:

$\displaystyle \: {(x} + 4)(x - 25)= 0$

$\displaystyle \: x = 25$

5 0

2 years ago

The ratio of boys and girls in the class is 4:3. How many boys and girls are in the class if there are 35 students?

Studentka2010 [4]

Answer: Boy = 20 and Girl = 15

Explanation:

Boy = 35 x 4/7 = 20

Girl = 35 x 3/7 = 15

4 0

3 years ago

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