What is the answer for 4/8-2/5

The ratio of students to adults on a field trip is 8 to 1. Which table correctly shows this ratio for each grade?

elena-14-01-66 [18.8K]

Answer:

The table C correctly shows the ratio 8:1 for each grade

Step-by-step explanation:

Let

x ----> the number of students

y ----> the number of adults

we know that

$\frac{x}{y}=\frac{8}{1}$

Verify each table

Table A

grade 6

$\frac{96}{88}=\frac{8}{1}$

Multiply in cross

$96(1)=8(88)$ ----> is not true

Table B

grade 6

$\frac{96}{104}=\frac{8}{1}$

Multiply in cross

$96(1)=8(104)$ ----> is not true

Table C

grade 6

\frac{96}{12}=\frac{8}{1}

Multiply in cross

$96(1)=8(12)$

$96=96$ ----> is true

grade 7

$\frac{120}{15}=\frac{8}{1}$

Multiply in cross

$120(1)=8(15)$

$120=120$ ----> is true

grade 8

\frac{136}{17}=\frac{8}{1}

Multiply in cross

$136(1)=8(17)$

$136=136$ ----> is true

therefore

The table C correctly shows the ratio 8:1 for each grade

Table D

grade 6

$\frac{96}{11}=\frac{8}{1}$

Multiply in cross

$96(1)=8(11)$ ----> is not true

3 0

3 years ago

Read 2 more answers

27

oee [108]

Answer: (assuming the first three terms are -6, -2, 2)

(a) f(n) = 4n - 10

(b) 30

Step-by-step explanation:

(So, just as a preface, I made this answer assuming the first three terms are -6, -2, and 2 since I couldn't find a provided fourth term as the problem said)

(a) In order to create an equation for an arithmetic sequence, you need to find the common difference(d) and the 0th term. You can find the common difference by finding the difference between two consecutive terms:

2 - (-2) = 4 (or (-2) - (-6) = 4), so d = 4

Now, you need to find the 0th term. To do this, you can just subtract the d from the first term, -6:

-6 - 4 = -10.

At this point, you can write the equation:

f(n) = -10 + 4n (this is the 0th term plus the common difference, 4, times the nth term)

f(n) = 4n - 10 (reorganize by value of exponents)

(b) In order to find the 10th term, you just need to plug it into the previous equation:

where n = 10, and f(n) = 4n - 10,

f(n) = 4(10) - 10 (substitute n into the equation)

f(n) = 40 - 10 (multiply the term in the parenthesis by the constant)

f(n) = 30 (subtract)

8 0

3 years ago

a diver is 19 meters below the surface of the water.use an interger to represent how far the diver will need to travel to reacg

Alex Ar [27]

Answer:

19 meters

Step-by-step explanation:

if he goes straight up at 90 degreed to the surface of water, it would be 19 metres

7 0

2 years ago

Plz help Problem is in the picture

VARVARA [1.3K]

Answer:

∠BME = 116°

Step-by-step explanation:

Given MD is the angle bisector of ∠BME, then

∠BMD = ∠DME ← substitute in expressions

6x - 8 = 4x + 14 ( subtract 4x from both sides )

2x - 8 = 14 ( add 8 to both sides )

2x = 22 ( divide both sides by 2 )

x = 11

∠BME = ∠BMD + ∠DME = 6x - 8 + 4x + 14 = 10x + 6, hence

∠BME = (10 × 11) + 6 = 110 + 6 = 116°

5 0

3 years ago

1. Mina bought a plane ticket to New York City and used a coupon for 10% off the ticket price. The

Semmy [17]

Answer:

$x-0.10x=253.10$

Step-by-step explanation:

Let x represent the price of the ticket without the discount.

The cost of the ticket after discount would be x minus 10% of x.

10% of x: $\frac{10}{100}*x=0.10x$

We have been given that the total cost of ticket with 10% discount is $253.10. We can represent the given information in an equation as:

$x-0.10x=253.10$

Therefore, Mina could use the equation $x-0.10x=253.10$ to find the price of ticket without the discount.

3 0

3 years ago