All categories

3 years ago

Can some help me please!? I don't understand how to do it! (15PTS)

Mathematics

1 answer:

kirill [66]3 years ago

6 0

A) Quadratic variation. This is because the equation is in the form y = kx^2 with k = 1/8.

B) Inverse variation. Recall that inverse variation is in the form y = k/x which we can solve to xy = k. Here we have k = 9.

C) Direct linear variation. This equation is in the form y = kx, which is also known a direct proportional relationship because k = y/x. In this case, k = 1/11.

You might be interested in

Natalie just rented an apartment for $900 a month. She was told that the rent will increase 5.5% each year. About how much will

belka [17]

$1246.

<span>This is a guess, though.</span>

6 0

3 years ago

Read 2 more answers

The access code for a cars security system consist of four digits the first digit cannot be 1 and the last digit must be odd how

Katena32 [7]

So we have 10 numbers 0 - 9
0 1 2 3 4 5 6 7 8 9
The first digit cannot be 1
therefore there are 9 possibilities
0 2 3 4 5 6 7 8 9

digits 2 and 3 can be numbers 0 through 9
therefore there are 10 possibilities for digits 2 and 3
digits 2 and 3 are a total of 2 digits
and the last digit must be odd so there are 5 possibilities -> 1 3 5 7 9
so
$9 * 10^2 * 5 => 9 * 100 * 5 => 45* 100 = 45,000$
codes available

6 0

3 years ago

Julia does her homework either between 4:00 and 6:00 p.m or between 8:00 and 10:00 p.m

daser333 [38]

What is the question being asked her

6 0

3 years ago

It costs a total of R138.90 to purchase 10 loaves of bread and 12 litres of cooidrinks in a store. If the store raises the price

AlladinOne [14]

9514 1404 393

Answer:

R32.15

Step-by-step explanation:

Let x and y represent the original price of a loaf of bread and a liter of drink, respectively. The two relations given by the problem statement are ...

10x +12y = 138.90

10(1.2x) +12(1.1y) = 159.54

Multiplying the first equation by 1.2 and subtracting the second gives ...

1.2(10x +12y) -(10(1.2x) +12(1.1y)) = 1.2(138.90) -(159.54)

1.2y = 7.14 . . . . collect terms

y = 5.95 . . . . . divide by 1.2

The value of x can be found from the first equation.

10x + 12(5.95) = 138.90

10x = 67.50 . . . . . . . . . . . subtract 71.40

x = 6.75 . . . . divide by 10

Then the value of 3x+2y is ...

3(6.75) +2(5.95) = 32.15

The original price of 3 loaves and 2 liters is R31.15.

8 0

3 years ago

5 x 4000 step by step for khan

nasty-shy [4]

Answer:

Step-by-step explanation:

5×4000

=20,000 answer

7 0

3 years ago