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4 years ago

Factor the expression m^2-3mn-28n^2

Mathematics

1 answer:

Slav-nsk [51]4 years ago

3 0

Answer:

(m-7n)(m+4n)

Since a is equal to 1, the equation can be factored by finding factors that multiply to c and adds to b and add each of the factor to m.

find factor that multiplies to -28n^2 and adds to -3n

-7n times 4n is -28n^2 and -7n plus 4n is -3n

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What is the coefficient of q in the sum of (2/3q-3/4) and(-1/6q-r)?

Harlamova29_29 [7]

Answer:

The coefficient is $\frac{1}{2}$

Step-by-step explanation:

The given sum is

$(\frac{2}{3}q -\frac{3}{4})+(-\frac{1}{6}q-r)$

We can choose to add only the coeffients of $q$ or simplify the whole sum.

$=\frac{2}{3}q -\frac{1}{6}q-\frac{3}{4})-r)$

We collect the LCM for the $q$ terms;

$=\frac{4-1}{6}q-\frac{3}{4})-r)$

This will give us;

$=\frac{3}{6}q-\frac{3}{4})-r)$

Which is the same as

$=\frac{1}{2}q-r-\frac{3}{4}$

The coefficient is $\frac{1}{2}$

6 0

3 years ago

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Please help... I'm stuck on number 44 and I can't remember how to do it

Leona [35]

3(x+4)=9
3x+12=9
3x=-3
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Hope this helps :D

3 0

4 years ago

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It costs 3

yKpoI14uk [10]

Answer:

3g = 21

Step-by-step explanation:

TTM answer

6 0

4 years ago

Plz read the question then ANWSER then tell me what u did, to get the amwser/ how u did it

pshichka [43]

Answer:

Step-by-step explanation: use Triangle formula Area= 1/2xbxh

1/2x6x6=18

18 sq inches for one triangle then multiply by 24 for the whole quilt

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4 years ago

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On a given day, 36 of the 445 students in a school were absent. What was the appproximate absentee rate that day?

Nata [24]

Answer: The approximate absentee rate that day would be 8.09%.

Step-by-step explanation:

Since we have given that

Number of students who were absent = 36

Total number of students = 445

We need to find the approximate absentee rate that day :

Rate of absentee of that day would be

$\dfrac{\text{Number of absentee}}{\text{Total number of students}}\times 100\\\\=\dfrac{36}{445}\times 100\\\\=8.09\%$

Hence, the approximate absentee rate that day would be 8.09%.

5 0

3 years ago