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3 years ago

8

A bag contains 6 red marbles and 24 green marbles.If a representative sample contains 2 red marbles, then how many green marbles

would you expect it to contain?Explain.

1 answer:

Rainbow [258]3 years ago

6 0

Answer:

8

Step-by-step explanation:

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What statement statement is not true is not true

Black_prince [1.1K]

C is the answer because with this kind of math the answer can be Neg or Postive <span />

5 0

3 years ago

Brianna has 4 pink bracelets. One third of all her bracelets are pink. How many braclets does Brianna have?

liq [111]

Brianna has 12 braclets

3 0

3 years ago

Read 2 more answers

Find a such that the solution of y'' + y' − 2y = 0, y(0) = a, y' (0) = 1 tends to zero as t → +∞.

Kay [80]

Answer:

Step-by-step explanation:

$y'' + y' − 2y = 0, y(0) = a, y' (0) = 1$

Auxialary equation is

$m^2+m-2=0\\m=-2,1$

General solution is

$y=Ae^{-2x} +Be^x$

$y(0) = A+B =a$

$y'(0) = -2Ae^{2x} +Be^x = -2A+B = 1$

Eliminate B to get

3A =a-1

We know that y tends to 0 when x tends to infinity for any finite A

i.e. a should be a finite real number.

8 0

3 years ago

1. Use pictures or words to

8_murik_8 [283]

Answer:

Step-by-step explanation:

Good thing you said it was Canadian Money. Pennies are gone and loonies and toonies are used.

1 Toonie = $2.00

1 Loonie = $1.00

3 quarters= .75

2 dime <u> .10</u>

3.85

6 0

3 years ago

Tina was asked to determine the possible dimensions of a given rectangle whose area is 12a4b3-18a6b3-72a7b3. Tina stated that th

Rufina [12.5K]

Answer:

Tina is correct

Step-by-step explanation:

Given

$Area = 12a^4b^3 - 18a^6b^3 - 72a^7b^3$

Required

State if $3a^4b^3(4-6a^2-24a^3)$ is a possible dimension

To do this, we simply expand $3a^4b^3(4-6a^2-24a^3)$

$3a^4b^3(4-6a^2-24a^3)$

$3a^4b^3 * 4-3a^4b^3 * 6a^2-3a^4b^3 * 24a^3$

$12a^4b^3 - 18a^{4+2}b^3 * -72a^{4+3}b^3$

$12a^4b^3 - 18a^{6}b^3 * -72a^{7}b^3$

By comparison, the result of the expansion

$12a^4b^3 - 18a^{6}b^3 * -72a^{7}b^3$

and the given expression

$Area = 12a^4b^3 - 18a^6b^3 - 72a^7b^3$

are the same.

<em>Hence, Tina is correct</em>

7 0

2 years ago