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Sophie [7]
2 years ago
5

Simplify 4a – 7b + 2ab – a + b.

Mathematics
2 answers:
Ivenika [448]2 years ago
6 0

Answer:

- ab and 15ab

Step-by-step explanation:

inysia [295]2 years ago
4 0

Answer:

3a - 6b + 2ab

Step-by-step explanation:

We can group the a's and b's like this:

4a - 7b + 2ab - a + b

4a - a - 7b + b + 2ab

3a - 6b + 2ab

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In triangle abc angle a = 40◦, side b = 11 and side c = 5. use the cosine rule to find the length of side a, to two decimal plac
Sonbull [250]
A^2 = b^2 + c^2 - 2bc cos a

    = 11^2 + 5^2 - 2*5*11 cos 40

   =  7.86 to 2 DP's

to find the remaining angles use the sine rule:-
a / sin A = b / sin B so

7.857/ sin 40 =  11 / sin B
sin B = 11 sin40 / 7.857 = 0.8999

<B = 64 degrees 

so <C = 180 - 64-40  =  76 degrees
5 0
3 years ago
What is GCF and LCM of -5 and 56? Please Help! Will give Brainliest!
Nookie1986 [14]

Answer:

The GCF is 1 and the LCM 280

Step-by-step explanation:

I did this on a test and got it right

4 0
3 years ago
Read 2 more answers
Hi please can you help me this is a new topic and I’m very confused
olchik [2.2K]

Answer: the large jar is cheaper

Step-by-step explanation:

If you divide the £1.54 by 440g and £1.26 by 340g, you'll find which one is cheaper per gram :

1.54/440 = 0.0035

1.26/340 = 0.0037

So, by comparing both prices/gram, you've found that the large jar is cheaper.

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2 years ago
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3 years ago
I need help on this one
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