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3 years ago

Juanita did this work to solve an equation. Did she make an error?

Mathematics

2 answers:

Sergio [31]3 years ago

6 0

Yes it should be a negative nine not a positive nine

Have a nice day : )

sashaice [31]3 years ago

6 0

Answer:

Step-by-step explanation:

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Can a 64 ounce be poured into a 4 ounce cup

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yes but with 16 4 ounce cups

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3 years ago

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Koyal Bird 2 kg 400 grams of potatoes 3 kg 250 grams of onion and 4 kg 800 grams of tomato from a vendor what is the total weigh

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Step-by-step explanation:

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3 years ago

If 2xº and (2x - 20) are a pair of adjacent supplementary angles, find the<br>value of x.

kifflom [539]

Answer:

x = 50

Step-by-step explanation:

Since the two angles are supplementary, add them together and set them equal to 180 degrees

2x + 2x - 20 = 180 Combine like terms

4x - 20 = 180

+ 20 + 20 Add 20 to both sides

4x = 200 Divide both sides by 4

x = 50

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3 years ago

Help answer and EXPLAIN STEP BY STEP

pychu [463]

15. $(-k^{3} -5k^{2} + 1) - (6k^{3}-k^{2} -2)$

Step 1: Distribute the subtraction sign to all the numbers in the second set of parentheses...

$(-k^{3} -5k^{2} + 1) - (6k^{3}-k^{2} -2)$

$-k^{3} -5k^{2} +1 - 6k^{3} +k^{2} +2$

Step 2: Combine like terms ( $k^{2}$ 's go with $k^{2}$ 's)

$-k^{3} -5k^{2} + 1 - 6k^{3}+k^{2} +2$

$-5k^{2} +k^{2}$

$-4k^{2}$

$-k^{3} -4k^{2} + 1 - 6k^{3}+2$

Step 3: Combine like terms ( $k^{3}$ 's go with $k^{3}$ 's)

$-k^{3} -4k^{2} + 1 - 6k^{3}+2$

$-k^{3} + (- 6k^{3})$

$-7k^{3}$

$-7k^{3} -4k^{2} + 1 +2$

Step 4: Combine like terms (normal numbers go with normal numbers)

$-7k^{3} -4k^{2} + 1 +2$

1 + 2

$-7k^{3} -4k^{2} + 3$

You were correct!

16. $49m^2 - 84mn + 36n^2$

I don't really know how to explain this one but I got: (7m-6n)(7m-6n)

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3 years ago

6. Which expression is equivalent to the

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What is the algebraic expression?

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3 years ago