All categories

2 years ago

Identify the factors of 6ab − 8a + 21b − 28. (5 points)

Mathematics

2 answers:

emmasim [6.3K]2 years ago

5 0

Answer:

$(2a+7)(3b-4)$

Step-by-step explanation:

The given expression is

$6ab-8a+21b-28$

Make the groups for this expression as shown below

$(6ab-8a)+(21b-28)$

Factor out GCF from each group

$2a(3b-4)+7(3b-4)$

Now, (3b-4) is common. Hence, factored out this, we get

$(3b-4)(2a+7)$

Therefore, the factored form of the given expression is

$(2a+7)(3b-4)$

Third option is correct.

cupoosta [38]2 years ago

4 0

Rearrange to

6ab+21b-8a-28 now factor 1st and 2nd pair of terms...

3b(2a+7)-4(2a+7)

(3b-4)(2a+7)

So it is the third one down...

You might be interested in

3.6x107<br> (2.5x106) (1.6x103)

denis23 [38]

Answer:

16822454.4 is the answer

6 0

3 years ago

Factor 75t2 + 12.<br> 3(5t + 2)2<br> 3(25+2 +4)<br> 3(251-4)

frosja888 [35]

Answer:

$75t^2+12=3(25t^2+4)$

Option C)

Step-by-step explanation:

Here we are given with the expression $75t^2+12$

The GCF of $75t^2$ and 12 is 3

Hence we take 3 as GCF and bring it in front of the bracket.

$3(25t^2+4)$

It can not be factorise furthure as there is no GCF of 25 and also there is no rule for sum of squares so that we may apply it on this. Hence the answer would be

$3(25t^2+4)$

Option C)

4 0

3 years ago

It's in the picture....................

lina2011 [118]

I promise this app called brainily is a life saver for algebra problems like this !! It’s not a scam trust me

8 0

2 years ago

Find the two angles and show work!!!

USPshnik [31]

Answer:

x=23.5

Step-by-step explanation:

90=25-x/2+18

combine like terms

90=43-x/2

subtract 43 from both sides

47= -×/2

47/2= 23.5

x=23.5

90-25= 65

65-18=47

47/2=23.5

5 0

3 years ago

Armand ran the 100 yard dash in 17.18 seconds. Arturo's time has an 8 with a value 10 times the value of the 8 in Armand's time.

frosja888 [35]

8====D

He has a value of 64

4 0

3 years ago