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icang [17]
4 years ago
7

If Andy saves $1 the first week, $2 the second week, $3 the third and so on, how much will he save after 20 weeks?

Mathematics
2 answers:
ivolga24 [154]4 years ago
6 0

Answer:it’s 110

Step-by-step explanation:

Neko [114]4 years ago
6 0

Answer: andy will $210

Step-by-step explanation:

idk:c

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It cost $36.75 for 3 tickets to visit the science center. It cost $51 for tickets for 4 tickets to visit the zoo. Which attracti
jonny [76]

Answer:

It would cost more to go to the zoo by $6

Step-by-step explanation:

The total amount that each attraction costs can be given by;

<em>Science center</em>

Total cost at the science center=cost per ticket×number of tickets

where;

Total cost at the science center=$36.75

Cost per ticket=c

Number of tickets=3 tickets

Substituting;

36.75=c×3

c=(36.75/3)=12.25 per ticket to go to the science ticket

For 12 students, total cost at the science center=(12.25×12)=$147

<em>Zoo</em>

Total cost at the zoo=cost per ticket×number of tickets

where;

Total cost at the zoo=$51

Cost per ticket=d

Number of tickets=4 tickets

Substituting;

51=d×4

d=(51/4)=12.75 per ticket to go to the zoo

For 12 students, total cost at the zoo=(12×12.75)=$153

Total zoo cost-Total science center cost=(153-147)=$6

It would cost more to go to the zoo by $6

7 0
3 years ago
Write three equivalent ratios to compare the number of w's with the number of g's in the pattern wwwwwwwwwwww gggggggggggggggggg
dimulka [17.4K]

Answer: 12:24    6:12      2:4

Step-by-step explanation:

6 0
3 years ago
Find the quotient 45a2-5a3/5a​
NISA [10]

Answer:

9a-a^2 is the required quotient.

Step-by-step explanation:

\frac{45 {a}^{2}  - 5 {a}^{3} }{5a}  \\  =  \frac{5a(9a - {a}^{2} )}{5a}  \\  = 9a -  {a}^{2}

4 0
4 years ago
Evaluate. Write in standard form.
Feliz [49]

Answer:

-i

Step-by-step explanation:

(-i)^0 = 1

(-i)^1 = -i

(-i)^2 = -1

(-i)^3 = -i

(-i)^4 = 1

(-i)^5 = -i

etc.

From this pattern, you see that when the exponent is a multiple of 4, you get 1. When the exponent is a multiple of 4 plus 1, you get -i, etc.

213 = 4 * 53 + 1

213 is 1 more than a multiple of 4.

(-i)^213 = (-i)^1 = -i

7 0
4 years ago
Determine the values of a for which the following system of linear equations has no solutions, a unique solution, or infinitely
navik [9.2K]

Answer:

Never

Never

Never

Step-by-step explanation:

The equations given are

2x1−6x2−4x3 = 6 ....... (1)

−x1+ax2+4x3 = −1 ........(2)

2x1−5x2−2x3 = 9 ..........(3)

the values of a for which the system of linear equations has no solutions

Let first add equation 1 and 2. Also equation 2 and 3. This will result to

X1 + (a X2 - 6X2) - 0 = 5

And

X1 + (aX2-5X2) + 2X3 = 8

Since X2 and X3 can't be cancelled out, we conclude that the value of a is never.

a unique solution,

Let first add equation 1 and 2. Also equation 2 and 3. This will result to

X1 + (a X2 - 6X2) - 0 = 5

And

X1 + (aX2-5X2) + 2X3 = 8

The value of a = never

infinitely many solutions. 

Divide equation 1 by 2 we will get

X1 - 3X2 - 2X3 =3

Add the above equation with equation 3. This will result to

3X1 - 8X2 - 4X3 = 12

Everything ought to be the same. Since they're not.

Value of a = never.

4 0
4 years ago
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