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3 years ago

A student expanded an expression, as shown. Is the student's work correct? Explain why or why not.

Mathematics

2 answers:

Schach [20]3 years ago

7 0

Answer:

No, the work is not correct. The distributive property was not used properly to expand the expression. Negative 6 should be multiplied by both terms in the parentheses. The second product should be -6 times -2/13 to get positive 12/13.

Step-by-step explanation:

Just answered the question. Just copy and paste its the work to work answer

Ugo [173]3 years ago

4 0

Answer:

No.

Step-by-step explanation:

Honestly, I'm not entirely certain. The steps are formatted very weirdly and I'm not sure what they are.

I believe the first step is -6(4x-213) which is a different expression than the last step which is (-24x-1213) but those aren't very similar.

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What number is39% of 120

noname [10]

46.8 is 39% of 120. Hope this helped you!

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3 years ago

Read 2 more answers

This is my last question please help me

anastassius [24]

Answer:

Angle ADC = 80 degrees

Step-by-step explanation:

Here, we want to find the measure of angle ADC

mathematically, sum of angles at a point is 360

Thus;

x + 3x + x + 10 = 360

5x + 10 = 360

5x = 360-10

5x = 350

x = 350/5

x = 70

From the diagram;

angle ADC is (x + 10)

so we have; (70 + 10) = 80 degrees

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3 years ago

If a bank has total deposits of $7,200 and reserves of $1,600: instructions: round to the nearest whole number. (a) what is its

Serjik [45]

A.) The current reserve ratio is given by the fraction of the bank's total deposits held in reserves.
Given that the bank's total deposits is $7,200 and the reserves is $1,600, the current reserve ratio is given by:

$\frac{1,600}{7,200} \times100\%=22\%.$

b.) The loan portfolio is given by (total deposit - reserves) / total deposits

Thus, the loan portfolio of the given bank is given by:

$\frac{7,200-1,600}{7,200} \times100\%= \frac{5,600}{7,200} \times100\% \\ \\ =78\%$

4 0

3 years ago

aev [14]

Answer:

See attachment.

a) y = -x + 2

b) (2,1)

Step-by-step explanation:

Explained in the attachment.

7 0

2 years ago

Find the GCF of the terms of the polynomial.

-BARSIC- [3]

<h3>Answer: 2z^3</h3>

====================================================

Explanation:

The GCF of the coefficients {6, -42, 14} is 2 as it is the largest factor found in each of the three values.

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For the variable portions, we can

write z^5 as z^3*z^2
write z^4 as z^3*z^1
write z^3 as z^3*1

Each time we see z^3 show up, so this is the largest common factor among the three variable terms.

----------

The two results we got were 2 and z^3

Putting the two results together, we end up with the overall GCF of 2z^3

4 0

3 years ago