All categories

2 years ago

This is Amy's family.

Mathematics

1 answer:

forsale [732]2 years ago

7 0

Answer:

All of their tickets cost $425.00

Step-by-step explanation:

a= adults c=children

$1700 divided by a=4

$1700 divided by c=2

You might be interested in

What is (2n-3p)+4(2n-3)

Klio2033 [76]

Answer:

Step-by-step explanation:

$(2n-3p)+4(2n-3)\qquad\text{use the distributive property}\\\\=2n-3p+(4)(2n)+(4)(-3)\\\\=2n-3p+8n-12\qquad\text{combine like terms}\\\\=(2n+8n)-3p-12\\\\=10n-3p-12$

7 0

3 years ago

Read 2 more answers

8 gal/h = ________ pt/min

docker41 [41]

$1gal=8pt\\1h=60min\\\\8\ gal/h=8\times\frac{8pt}{60min}=\frac{64}{60}\ pt/min=\frac{16}{15}\ pt/min=1\frac{1}{15}\ pt/min$

5 0

3 years ago

(6x + 4)

baherus [9]

I didn't understood the question in my view the question must be (6x + 4) = 82

Answer:

x = 13

Step-by-step explanation:

6x = 82 - 4

6x = 78

x = 78/6

therefore; x = 13

6 0

3 years ago

A college job placement office collected data about students’ GPAs and the salaries they earned in their first jobs after gradua

frez [133]

Answer:

X is the GPA

Y is the Salary

Standard deviation of X is 0.4

Standard deviation of Y is 8500

E(X)=2.9

E(Y)=47200

We are given that The correlation between the two variables was r = 0.72

a) $y = a+bx$

$b = \frac{\sum(x_i-\bar{x})(y_i-\bar{y})}{\sum(x_i-\bar{x})^2} = \frac{r \times \sqrt{var(X) \times Var(Y)}}{Var(X)} = \frac{0.72 \times \sqrt{0.4^2 \times 8500^2}}{0.4^2} = 15300$

$a=y-bx = 47200-(15300 \times 29) = 2830$

So, slope = 15300

Intercept = 2830

So, equation : $y = 2830+15300x$

b) Your brother just graduated from that college with a GPA of 3.30. He tells you that based on this model the residual for his pay is -$1880. What salary is he earning?

$y = 2830+15300 \times 3.3 = 53320$

Observed salary = Residual + predicted = -1860+53320 = 51440

c)) What proportion of the variation in salaries is explained by variation in GPA?

The proportion of the variation in salaries is explained by variation in GPA = $r^2 = (0.72)^2 =0.5184$

8 0

2 years ago

Find the length of the side marked x

ruslelena [56]

it's a right angled triangle so we will use hypotenuse formula to get the value of x

hypotenuse formula = a² + b² = c²

a = side of the triangle

b = base of traingle

c = hypotenuse ( can be written as h too)

and the formula can also be written as.

c² = a² + b²

therefore, x = 12.1

hope this answer helps you dear...take care!

3 0

2 years ago