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wolverine [178]

2 years ago

14

Pedro had $14.90 in his wallet. He spent $1.25 on a drink. How much does he have left?

1 answer:

faust18 [17]2 years ago

8 0

Answer:

589

Step-by-step explanation:

Pedro had $14.90 in his wallet. He spent $1.25 on a drink. How much does he have left?

(a) Estimate the answer by rounding to the nearest whole numbers before subtracting.

(b) Find the difference. Show your work (steps).

(c) Check your answer. Is it reasonable? How do you know? Explain

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Use math notation to describe the following sequence: <br> 1, -1, 1, -1,...

Veseljchak [2.6K]

Answer:

The math notation to the given sequence is $a_n=(-1)^{n+1}$ for n=1,2,3,... is verified and it is true

Step-by-step explanation:

Given sequence is 1,-1,1,-1,...

Let $a_1=-1,a_2=1,a_3=-1,a_4=-1,...$

To find the math notation for the given sequence :

$a_n=(-1)^{n+1}$ for n=1,2,3,... verify that it is true or not

Put n=1 in the above equation we get

$a_1=(-1)^{1+1}$

$=(-1)^2$

Therefore $a_1=1$

Put n=2 in the $a_n=(-1)^{n+1}$ equation we get

$a_2=(-1)^{2+1}$

$=(-1)^3$

Therefore $a_2=-1$

Put n=3 in the $a_n=(-1)^{n+1}$ equation we get

$a_3=(-1)^{3+1}$

$=(-1)^4$

Therefore $a_3=1$

and so on

Therefore the math notation to the given sequence is $a_n=(-1)^{n+1}$ for n=1,2,3,... is verified and it is true

3 0

2 years ago

Dominic works on the weekends and on vacations from school mowing lawns in his neighborhood. For every lawn he mows, he charges

Ivahew [28]

Answer:

$20\ lawns = \$240$

$9 \ lawns = \$108$

<em>See Attachment for Graph</em>

<em></em>

Step-by-step explanation:

Given

$1\ lawn = \$12$

Solving (a): Number of lawns in $240

$1\ lawn = \$12$

Multiply both sides by 20

$20 * 1\ lawn = \$12 * 20$

$20\ lawns = \$240$

Solving (b): Cost of mowing 9 lawns

$1\ lawn = \$12$

Multiply both sides by 9

$9 * 1\ lawn = \$12 * 9$

$9 \ lawns = \$108$

To create a graph, we need to generate a formula;

If

$1\ lawn = \$12$

$2\ lawn = \$24$

$3\ lawns = \$36$

$x\ lawns = \$12x$

So:

<em>The graph formula is</em>

$y = 12x$

<em>See Attachment for Graph</em>

5 0

2 years ago

Solve for x. please i need know

miss Akunina [59]

Answer:

x = 18

Step-by-step explanation:

Vertically opposite angles are equal.

x + x + x + 90 = 144

3x + 90 = 144

Subtract 90 from both sides

3x = 144 - 90

3x = 54

Divide both sides by 3

x = 54/3

x = 18

4 0

2 years ago

Andrea rents a bike for a day. The rental charges can be determined by

Greeley [361]

Https://www.cymath.com/answer?q=%205%2B4i%2F6%2B8i

4 0

2 years ago

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Jillians annual salary as an actress is $35,000. She receives a paycheck every two weeks. What is jillians biweekly salary?

netineya [11]

There are 52 weeks in a year and if she gets paid every two weeks then divide 52 by 2 to get 26 so she would get paid 26 times a year so divide her annual salary by 26 to get $1,346.15 every other week. So her biweekly salary is $1,346.15.

8 0

3 years ago

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