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Oduvanchick [21]
3 years ago
13

Tony bought a case of notebooks for his classroom priced at $8.50. If sales tax is 6%, what is the total cost after tax?

Mathematics
1 answer:
lara [203]3 years ago
6 0

It should be around 9.095 or just around 9.11 dollars.

Hope this is correct and that it helped!!

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Simplify each sum or difference. State any restrictions on the variables.
Dvinal [7]

Answer:

2(d-2)/(2d+1) or 1 - 5/(2d+1)

d can not be -½

Step-by-step explanation:

(d-3)/(2d+1) + (d-1)/(2d+1)

Lcm: 2d+1

(d-3+d-1)/(2d+1)

= (2d-4)/(2d+1)

= 2(d-2)/(2d+1)

If further simplification required:

= (2d-4)/(2d+1)

= (2d+1-5)/(2d+1)

= (2d+1)/(2d+1) - 5/(2d+1)

= 1 - 5/(2d+1)

2d+1 = 0

When d = -½

So d can not be -½ because when the denominator becomes 0, fraction becomes undefined

7 0
3 years ago
Mariah has an 8-sided die that is numbered 1 to 8. She rolls the die 96 times. About how many times can she roll an 8
pentagon [3]

Answer:

12

Step-by-step explanation:

96 divided by 8 is 12

7 0
3 years ago
Read 2 more answers
Factor completely 8x2-4x-84
mr_godi [17]

Answer: 4 • (2x - 7) • (x + 3)

Step-by-step explanation:

(4x+12)(2x-7)

8x²-28x+24x-84

8x²-4x-84

5 0
3 years ago
Why is -a² is always negative (a ≠ 0) and why is (-a)² is always positive?
hjlf
-a^2=(-1)\cdot a\cdot a

Regardless of the sign of a, we have a\cdot a=a^2\ge0 (never negative). But multiplying by -1 makes it negative.

On the other hand,

(-a)^2=((-1)\cdot a)^2=(-1)^2\cdot a^2=1\cdot a^2=a^2

which can never be negative for real a.
6 0
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RT is a midsegment of triangle UQS.
kvasek [131]

245 because it has rt and then number s one
4 0
3 years ago
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