All categories

3 years ago

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

Mathematics

2 answers:

emmasim [6.3K]3 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]3 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

Simplify the expression:<br> sinx+cosx/sinxcosx

Keith_Richards [23]

Sin x + $\frac{cos x}{sinx cosx}$
= sinx + $\frac{1}{sin x}$
= $sin^{2}x$ +1
= $cos^{2} x$

6 0

4 years ago

Find the following rates. Round your answer to the nearest hundredth. a. ? % of 75 = 5 b. ? % of 28 = 140 c. ? % of 100 = 40 d.

Nimfa-mama [501]

A.15 b.500 c.40 d.7.5 yeah, not to confident but I think it's correct.

5 0

3 years ago

2. Lani opened a savings account with $450. She

lidiya [134]

Answer: C

Step-by-step explanation:

450 is her initial value

225 is her rate of change or constant rate

5 0

3 years ago

Y = f(x) = 16x Find f(x) when x = 1/2

Alina [70]

Answer:

The answer depends on what the problem really is.

f(1/2) = 8

f(1/2) = 4

See below.

Step-by-step explanation:

This is the problem as it was posted:

y = f(x) = 16x

Let x = 1/2

y = f(1/2) = 16(1/2) = 8

Perhaps the problem is this:

$y = f(x) = 16^x$

If x is an exponent of 16 and not a factor, then the answer is:

$y = f(\frac{1}{2}) = 16^\frac{1}{2} = \sqrt{16} = 4$

5 0

3 years ago

Solve 1) y"+y'+y=x²;

Naily [24]

Answer:

x2+3y

Step-by-step explanation Combine like terms y+y+y=x2 3y+x2 and the solution is x2+3y.

5 0

3 years ago