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Ira Lisetskai [31]

2 years ago

15

I’m one day, 18 people each withdrew 1000$ from an atm machine. What was the overall change in the amount of money in the atm ma

chine?

1 answer:

labwork [276]2 years ago

4 0

Let M = amount of money in ATM at the beginning

M - 18(100) = M - 1800

The change is a decrease of $1,800

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3. A family is tracking its spending habits. Over the past year, the grocery bill has ranged from $110 to $170. Suppose you were

ra1l [238]

You would plot them by month, 170-110= 60 dollar increase. 60 divided by 12 ( for each month) leaves a 5 dollar increase each month. Your coordinates would be 0,110 1,115 2,120 3,125
x would be month
y would be money

4 0

2 years ago

At the parents evening the ratio of mums to dads was 3:2. Out of 500 appointments how many were with mums?

guajiro [1.7K]

Answer:

300

Step-by-step explanation:

Sum the parts of the ratio : 3 + 2 = 5 parts

Divide the number of appointments by 5 to find the value of one part of the ratio, that is

$\frac{500}{5}$ = 100 ← value of 1 part of the ratio

The mums consisted of 3 parts, hence

3 × 100 = 300 ← appointments with mums

3 0

2 years ago

MATH HELP!!!!!<br><br> If y = 15 when x = 2, what is the value of x when y = 7?

Ede4ka [16]

<u>Direct Variation:</u> $\frac{y}{x} = k$

$\frac{15}{2} = k$

when y = 7: $\frac{7}{x} = \frac{15}{2}$

14 = 15x

$\frac{14}{15} = x$

<u>Inverse variation:</u> y*x = k

15 * 2 = k

30 = k

when y = 7: 7 * x = 30

$x = \frac{30}{7}$

3 0

2 years ago

The temperature yesterday was 11 degrees colder than it was today if she represents the temperature today what expression repres

damaskus [11]

68-11=57 (Yesterday's temperature)
That's the expression. ^^ And yesterday's temperature is 57 because, 68 degrees (Today's temperature) minus 11 degrees (how many degrees colder it was yesterday) is equal to 57 degrees (Yesterday's Temperature).

6 0

3 years ago

7.8 is 65% of what number

Natalka [10]

7.8 = 0.65x

x = 100/65 * 78/10

x = 10/5 * 6

x = 12

3 0

2 years ago