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Anon25 [30]
3 years ago
13

Factorise the following expressions​.

Mathematics
1 answer:
Setler79 [48]3 years ago
3 0

Answer:

Q.1 a²+10a+24

splitting the middle.

a²+6a+4a+24

=a(a+6)+4(a+6)

(a+6)(a+4)

Q.2 x²+9x+18

splitting the middle

x²+6x+3x+18

x(x+6)+3(x+6)

(x+6)(x+3)

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Answer:

Part A:

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x = 8/3\ quarts\ of\ 100\%\ solution

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Part B:

x + y = 10

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Step-by-step explanation:

Part A:

The inicial concentration of the lemonade is 50%, and the volume is 4 quarts, and we will add x quarts of a lemonade with a concentration of 100%, so the total volume will be y, and the concentration will be 0.7, so we have that:

4 + x = y

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Part B:

If he shoots a total of ten targets, we can write the equation:

x + y = 10

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y = 3

x + 3 = 10 ⇒ x = 7

4 0
3 years ago
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