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oee [108]
3 years ago
5

Deandra is doing her math homework. She completed the first 6 problems in 2 hours and the last 12 problems in 3 hours.

Mathematics
1 answer:
Annette [7]3 years ago
3 0

Answer:

Deandra completed the first 6 problems at a rate of 3 problems per hour and the last 12 at a rate of 4 problems per hour.

Step-by-step explanation:

6 problems ÷ 2 hours = 3 problems per hour

12 problems ÷ 3 hours = 4 problems per hour

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<img src="https://tex.z-dn.net/?f=5x%5E%7B2%7D%20%2B%20x-7%3D" id="TexFormula1" title="5x^{2} + x-7=" alt="5x^{2} + x-7=" align=
zysi [14]

Equation: 5x^2+x-7

Since there aren't any like terms and it can't be factored, your answer would be:

5x^2+x-7

Hope this answer helped you!

7 0
3 years ago
Tyna simplified the expression StartFraction 3 x cubed Over 12 x Superscript negative 2 Baseline EndFraction to StartFraction x
Yuki888 [10]

Answer:

She divided the coefficients incorrectly

Step-by-step explanation:

A. She divided the coefficients incorrectly.

B. She added the exponents instead of subtracting them.

C. She divided the coefficients instead of subtracting them.

D. She subtracted the exponents instead of dividing them.

Correct calculation:

3x³/12x^-2

= 3x³ ÷ 12x^-2

= 3x³ ÷ 1/12x²

= 3x³ × 12x²/1

= 36x^5

Tyna's calculation:

3x³/12x^-2 = x/4

3 0
3 years ago
Please help me!! If you can help me I’d appreciate it
Aleks04 [339]
You would have eaten 1/6 of the serving.
8 0
3 years ago
Read 2 more answers
Will 7/8x6/6 be less than or greater than 7/8?
Akimi4 [234]
The answer to 7/8 * 6/6 is equal to 7/8 because 6/6 is equal to 1 and any number multiply by 1 is the own number :)))
i hope this is helpful
have a nice day 
8 0
3 years ago
Sean has worked 66 hours over the last 10 days without a day off. He worked either a 6 hour day or an 8 hour day. During the 10
katrin2010 [14]
He worked 3 8-hour days.

Let x be the number of 8 hour days.  Then 10-x is the number of 6 hour days.

8x + 6(10-x) = 66

Using the distributive property,
8x + 6*10 - 6*x = 66
8x + 60 - 6x = 66

Combining like terms:
2x + 60 = 66

Subtract 60 from both sides:
2x + 60 - 60 = 66 - 60
2x = 6

Divide both sides by 2:
2x/2 = 6/2
x = 3
5 0
3 years ago
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