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3 years ago

Can anyone confirmed and explained 18/19/20

Mathematics

1 answer:

Cerrena [4.2K]3 years ago

3 0

Answer

18) $51

19) $24

20) Carla's account.

Explanation

18)

Positive sign values means deposit while the negative values means money been withdrawn from the account.

$100 - $18 + $22 - $53 = $51

19)

Positive sign values means money deposited while the negative values means money been withdrawn from the account.

$45 - $17 - $22 + $18 = $24

20)

To get the person with the most deduction, you should add the negative values in the table then compare.

Carla ⇒ -18 + -53 = $-71

Leta ⇒ -17+ -22 = $-39

From here we can see that the account with greatest decrease is Carla's account.

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11/24+w=11/12 I need help

DaniilM [7]

Answer:

w = 11/24

Step-by-step explanation:

11/24 + w = 11/12

w = 11/12 - 11/24

LCM of 12 and 24 is = 24

divide the denominators of both fractions by the LCM(24) and then multiply the results with the numerators

so we have w = 22 - 11 /24

w = 11/24

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3 years ago

Given g(x) = 2x + 3, find g(3).

Kaylis [27]

Answer:

g(3) = 9

Step-by-step explanation:

replace 3 in x

g(3) = 2(3) +3 = 6 + 3 = 9

Hope this helps

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1 year ago

Rewrite to make it easy to graph using a translation. Describe the graph: 3√(27x-81) - 5

Kipish [7]

Numbers 27 and 81 have 27 as common factor which is equal to 3^3. Noting that we can put 27 before brackets write it in form 3^3 and that third root and cube will trim.

$\sqrt[3]{27x - 81} - 5=$
$\sqrt[3]{27(x-3)} - 5 =$
$\sqrt[3]{3^3(x-3)} - 5=$
$3 \sqrt[3]{x-3} - 5$

-5 means that graph is shifted 5 to down.
-3 means it is shifted to right by -3
3 and ∛ represent scaling of graph which can be seen and tested once you draw it. It is harder to explain it with words.

6 0

3 years ago

A man's average of daily income from Sunday to Thursday is Rs 75 . If he earns Rs 93 on Friday , find his average income of 6 da

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

Average income from Sunday to Thursday = Rs 75.

There are 5 days .

So average = sum / 5

= sum = 5 average

= sum = 5 × 75

= sum = 375

He earns Rs 93 on Friday .

So adding this sum = Rs 375 + 93

= Rs 468

Average = sum / number of terms

= Average = 468/6

= Average = 78

Hence the average is 78 .

5 0

3 years ago

as a town gets smaller the population of its high school decreases by 5% each year. The senior class has 160 students now. In ho

hammer [34]

Answer:

T_n = 160(0.05)^(n - 1)

At T_n = 100, n = 1 year

Step-by-step explanation:

We will use geometric progression to solve this question.

Formula for nth term of a GP is;

T_n = ar^(n - 1)

We are told the population of its high school decreases by 5% each year.

This means r = 0.05

senior class has 160 students. Thus a = 160

Thus,T_n = 160(0.05)^(n - 1)

Where n is number of years after now.

We want to find the number of years before the class will have 100 students

Thus;

160(0.05)^(n - 1) = 100

(0.05)^(n - 1) = 100/160

(n-1)In 0.05 = In (100/160)

-2.9957(n - 1) = -0.47

(n - 1) = 0.47/2.9957

n = 1 + 0.1569

n = 1.1569

Approximating to the nearest whole number gives n = 1

4 0

3 years ago