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Roman55 [17]
3 years ago
14

Martino paid for his $32.87 shoes with two $20 bills. He should receive in change.

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
5 0
Two $20 bills = $40

$40 - $32.87 = $7.13

$7.13 is his change

hope this helps
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What is the measure in radians for the central angle of a circle whose radius r = 4 cm, and intercepted arc length s = 1.2 cm? E
rodikova [14]

Answer:

17.1972degrees

Step-by-step explanation:

length of an arc = theta/360 * 2πr

Substitute the given angle;

1.2 = theta/360 * 2(3.14)(4)

1.2 = theta/360 * 25.12

1.2/25.12 = theta/360

0.04777 = theta/360

theta = 360 * .04777

theta = 17.1972

Hence the required angle is 17.1972degrees

6 0
3 years ago
Nine and one-half less than four and one-half times a number is greater than 62.5. Which of the following represents the solutio
madreJ [45]

Answer:

{16, +infinity}

Step-by-step explanation:

Represent the number with n

Required

Find the solution set

From the question, we have that;

4½n - 9½ > 62.5

Convert all numbers to decimal

4.5n - 9.5 > 62.5

Add 9.5 to both sides

4.5n - 9.5 + 9.5 > 62.5 + 9.5

4.5n > 72

Multiply both sides by 2

2(4.5n) > 72 * 2

9n > 144

Multiply both sides by ⅑

⅑ * 9n > 144 * ⅑

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This implies that n ranges to infinity from positive 16;

Hence, the correct answer is {16, +infinity}

4 0
3 years ago
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What’s the sum of 20x^2-10x-30
Vladimir [108]
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8 0
3 years ago
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Can you write a 5 sentence summary about the substitution method?
MAXImum [283]

Answer:

The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.

Step-by-step explanation:

6 0
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riadik2000 [5.3K]

Answer:

18 1/2 miles

Step-by-step explanation:

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Rewriting

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Changing back to an mixed number

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5 0
3 years ago
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