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erma4kov [3.2K]

2 years ago

6

Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x=12. y=

-10 when x=2

1 answer:

kramer2 years ago

4 0

Y = 20x + 7 for instance
then just substitute the values

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There are 3 identical wooden blocks with dimensions 30×4×3. If you glue them together, what is the smallest surface area you can

Inga [223]

Answer:

120

Step-by-step explanation:

5 0

2 years ago

Plsss hellppp I give brainliest but earn it

yaroslaw [1]

Answer:

3

Step-by-step explanation:

let the no of people who share the meal be x

each member paid $17

total cost of meal=$51

so ur equation is

$17x=$51

x=$51/$17(here $ and $ also gets cancel)

x=3

therefore three menber shared the meal.

Note:when in multiplication when u transfers the number to other side it changes into mltiplication.For example

$17=$51

here $17 is multiplied with x and when we bring $17 to right hand side it divides $51.

7 0

2 years ago

Read 2 more answers

Which of the following could be the number of real roots, including any repeated roots, of a quadratic polynomial with real coef

scoray [572]

I think the only answer here is 0
Idk tho

5 0

2 years ago

Outside a home, there is aa 44-key keypad numbered 11 through 44. The correct sixsix-digit code will open the garage door. Th

olya-2409 [2.1K]

Answer:

a) 4,096

b) 0.000244

Step-by-step explanation:

a)

By the Fundamental rule of counting, there are

4*4*4*4*4*4 = 4,096

ways of forming six-digit arrangements where each position has 4 possibilities (1 to 4)

b)

The probability of entering the correct code on the first try, assuming that the owner does not remember the code is

1/4096 = 0.000244

5 0

2 years ago

In the theory of learning, the rate at which a subject is memorized is assumed to be proportional to the amount that is left to

fiasKO [112]

Step-by-step explanation:

From the statement:

M: is total to be memorized

A(t): the amount memorized.

The key issue is translate this statement as equation "rate at which a subject is memorized is assumed to be proportional to the amount that is left to be memorized"

memorizing rate is $\frac{dA(t)}{dt}$ .

the amount that is left to be memorized can be expressed as the total minus the amount memorized, that is $M-A(t)$ .

So we can write

$\frac{dA(t)}{dt}=k(M-A(t))$

And that would be the differential equation for A(t).

4 0

3 years ago