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3 years ago

Hello hope your day is well i really need help with this expand question 4(a+5)-2(a-5)

Mathematics

2 answers:

kvv77 [185]3 years ago

7 0

Answer:

2a + 30

Step-by-step explanation:

use the distributive property:

4a + 20- 2a + 10

then rearrange for like terms

4a - 2a + 20 + 10

then add it up

2a + 30

BARSIC [14]3 years ago

6 0

Answer:

2a + 30

Step-by-step explanation:

break it down so it is 4(a+5)

then work out -2(a-5)

so 4 x a then 4 x 5 which gives 4a + 20

then -2 x a then -2 x -5 which gives -2a + 10

then when you have 4a + 20 -2a + 10

do 4a - 2a which is 2a

do 20 + 10 which is 30

so the answer comes to 2a + 30

if anything doesnt seem right just comment and i will correct

hope this helps :)

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Oksana_A [137]

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2 years ago

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zhuklara [117]

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3 years ago

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Lilit [14]

Answer:

S= {8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 }

event F= {10 , 11 , 12 , 13 , 14}

event G= {14 , 15 , 16 , 17}

a) List of outcomes in F or G

answer;

(F or G) = { 10 , 11, 12 , 13 , 14 , 15 , 16 , 17}

b) P ( F or G) = by counting the number of outcomes in F or G

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Step-by-step explanation:

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Hello, again!!

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Therefore, y will ALWAYS be negative.

The answer is C.

Hope this helps!! Let me know if you have ANY questions.

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3 years ago