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AleksAgata [21]
3 years ago
15

Calculators were purchased at $62 per dozen and sold for $38 for three calculators. Find the profit for selling 5 dozen calculat

ors. Round to nearest dollar
Mathematics
2 answers:
dedylja [7]3 years ago
8 0
Each calculator sold for $12.67 . So 5 would be $63.35
topjm [15]3 years ago
5 0
The answer is $20 because 38+38=66. So you would have to subtract 62 from 66 which is $4. Than you would multiply $4 by 5 which will get you $20. So the answer is $20
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Darya [45]

Answer:

{13,14}

Step-by-step explanation:

Let

x ----> number of hours per week of tutoring

y ----> number of hours per week of landscaping

we know that

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so

x+y\leq 17 -----> inequality A

She must earn at lest $240

The term " at least" means, "greater than or equal to"

16x+12y\geq 240 ----> inequality B

If Autumn worked 3 hours landscaping

then

y=3\ hours

substitute in the inequality A and in the inequality B

<em>Inequality A</em>

x+3\leq 17\\x \leq 17-3\\x\leq 14\ hours

Inequality B

16x+12(3)\geq 240\\16x\geq 240-36\\x\geq 12.75\ hours

The solution of the system is the interval {12.75,14]

All possible values for the number of whole hours tutoring that she must work to meet her requirements are

{13,14}

8 0
3 years ago
9.54
damaskus [11]

Answer:

9.5

Step-by-step explanation:

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What is the approximate circumference of a circle with a radius of 8.5 meters? Use π ≈ 3.14.
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7 0
3 years ago
The diameter is a circle is 16in. Find it’s circumference in terms of π.<br><br> C= ________in
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<h3><u>S</u><u> </u><u>O</u><u> </u><u>L</u><u> </u><u>U</u><u> </u><u>T</u><u> </u><u>I</u><u> </u><u>O</u><u> </u><u>N</u><u> </u><u>:</u></h3>

According to the question,

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We are asked to calculate it’s circumference in terms of π.

★ Circumference of circle = 2πr

___________________________________

Let us first calculate the radius of the circle.

→ Diameter = 2 × Radius

→ 16 in = 2r

→ r = 16 in ÷ 2

→ r = 8 in

___________________________________

Substituting values in the formula of circumference,

→ C = 2πr

→ C = (2 × π × 8) in

→ C = 16π in

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