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Marina86 [1]
3 years ago
12

Ms. Johnson asked her class to write an equivalent expression to

Mathematics
1 answer:
dimulka [17.4K]3 years ago
7 0
No one got the correct answer. The answer is supposed to be 7(2d+3k-dk-1). All the coefficients are divisible by 7, thus only the integers are changed. However, the variables cannot be a factor because they do not have the same variables that all the coefficients must have.
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Factor x2 - 18x + 81. Show your work
tensa zangetsu [6.8K]
To factorise it start with putting the xs in brackets.
(x )(x )
Then you must find 2 numbers which multiply to +81 and sum to -18.
81 is the product of 9×9 or -9×-9.
9+9=+18
-9+-9=-18
So they two numbers must be -9.
So factorised it is (x-9)(x-9) or (x-9)^2
4 0
3 years ago
Read 2 more answers
Which expression is equivalent to 1/3b - 7?
olga55 [171]

Answer:

\dfrac{1}{3}(b-21)

Step-by-step explanation:

We need to find an equivalent expression for \dfrac{1}{3}b-7

The denominator of first fraction is 3 and that of other is 1.

\dfrac{1}{3}b-7\\\\=\dfrac{b-21}{3}

or

=\dfrac{1}{3}(b-21)

Hence, the equivalent expression is \dfrac{1}{3}(b-21).

3 0
3 years ago
Read 2 more answers
Express it in slope-intercept form.
zmey [24]
Here is the answer hope this helps

6 0
3 years ago
Combine like-terms of 6x-2x-2=-3x+4(x+7)
Leya [2.2K]
3x-2 = 3x+4x+28x

3x-2 = 7x + 28
3 0
3 years ago
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An apartment lease states that the rent will go up $60 each year. The rent in the 6th year is $1250. Identify the slope and poin
oksano4ka [1.4K]

Answer:

The slope of the linear equation will be 60 and the point on the line will be (6,1250).

R - 1250 = 60(y - 6)

Step-by-step explanation:

An apartment lease states that the rent will go up by $60 each year. The rent in the 6th year is $1250.

Therefore, the slope of the linear equation will be 60 and the point on the line will be (6,1250).

Now, the point-slope form of the linear equation which models the rent (R(y)) in terms of how many years (y) the tenants have lived there will be

R - 1250 = 60(y - 6) (Answer)

7 0
3 years ago
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