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hoa [83]
3 years ago
11

A) Factorise 2x² - 9x - 5 (x-5)(2x+1) (2) b) Hence, simplify fully 2x^2- 9x - 5 3x – 15x (2) ​

Mathematics
1 answer:
Lyrx [107]3 years ago
8 0

Answer:

Step-by-step explanation:

<u><em>b).</em></u>

2x² - 9x - 5 = ( x - 5 )( 2x + 1 )

3x² - 15x = 3x ( x - 5 )

\frac{(x-5)(2x+1)}{3x(x-5)} = \frac{2x+1}{3x}

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Solve this in distributing -(5.3x-7y)-9.6
algol13

Answer:

-\left(5.3x-7y\right)\left(-9.6\right)=\:50.88x-67.2y

Step-by-step explanation:

Given the expression

-\left(5.3x-7y\right)\times \left(-9.6\right)

=-\left(-9.6\right)\left(5.3x-7y\right)

Apply distributive law

a\left(b-c\right)=ab-ac

a=-\left(-9.6\right),\:b=5.3x,\:c=7y

so the expression becomes

=-\left(-9.6\right)\times \:5.3x-\left(-\left(-9.6\right)\right)\times \:7y

=-\left(-9.6\right)\times \:5.3x+7\left(-9.6\right)y    ∵ -\left(-a\right)=a

\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a

=9.6\times \:5.3x-7\times \:9.6y

=50.88x-7\times \:9.6y

=50.88x-67.2y

Therefore,

-\left(5.3x-7y\right)\left(-9.6\right)=\:50.88x-67.2y

3 0
3 years ago
Before you answer, make sure to do a step by step explanation, if you forget, it's whatever. I'll give crowns to the people that
katen-ka-za [31]

Answer: 36.84

(lmk if this isnt right)

Step-by-step explanation:

To find the perimeter of the rectangle:

3+3+3+3+3+3=18

or

3(6)=18

To find the diameter of the circle:

12-(3+3)

12-6=6

You can combine the 2 half circles to make 1 full circle since they both have the same diameter. Use the circumference formula to solve.

C=πd

Substitute

C=3.14(6)

Multiply

C=18.84

Add the perimeter of the rectangle and the circumference of the circle.

18+18.84=36.84

4 0
3 years ago
What fraction is 45m of 1k
Ray Of Light [21]
You just have to do that:
how many 1k to m
it's 1000m
so the fraction is 45|1000
but you have to simplified it
so we gonna divided 45 by 9 it's 5
divided 1000 by 5 it's 200
so the fraction is now 5|200
i hope it's help
8 0
4 years ago
Answer the question below from I ready
san4es73 [151]
Your answer is going to be the first one: 3^2

6 0
3 years ago
Read 2 more answers
Can you help me?? i forgot how to do this
AlekseyPX

its 2nd option because the V should need to be long

5 0
3 years ago
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