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3 years ago

12

there are 3 yellow marbles and 4 silver marbles in a bag. You randomly choose one of the marbles. What is the probability of cho

osing a yellow marble?

1 answer:

Mamont248 [21]3 years ago

5 0

3/7 or 42.8 % is the probability to get a yellow marble!

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Simplify negative 4 and 1 over 6 − negative 6 and 1 over 3. Which of the following is correct?

Pavlova-9 [17]

The correct answer is 2 1/6.

Good Luck...:)

3 0

3 years ago

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(8p - 2) (6p+2) <br><br> help plz

qaws [65]

Answer:

$48p^2+2p-4$

Step-by-step explanation:

We can use the FOIL method to expand two multiplied binomials. It states that $(a+b)(c+d)=ac+bc+ac+bd$ . The FOIL method stands for First(first terms) outer(outer terms) inner(inner terms) last(last terms).

So, we can expand our binomials now!

$(8p-2)(6p+2)=(8p)(6p)-2(6p)+(8p)(2)-2(2)=48p^2-12p+14p-4=\boxed{48p^2+2p-4}$

8 0

3 years ago

5/6(2x+12)-8=4-(x+1)

alekssr [168]

For this case we have the following equation:

$\frac {5} {6} (2x + 12) -8 = 4- (x + 1)$

We apply distributive property on the left side of the equation:

$\frac {5 * 2} {6} x + \frac {5 * 12} {6} -8 = 4- (x + 1)\\\frac {10} {6} x + \frac {60} {6} -8 = 4- (x + 1)$

We simplify the left side of the equation:

$\frac {5} {3} x + 10-8 = 4- (x + 1)$

Different signs are subtracted and the major sign is placed.

$\frac {5} {3} x + 2 = 4- (x + 1)$

On the right side we must take into account that:

$- * + = -$

So:

$\frac {5} {3} x + 2 = 4-x-1\\\frac {5} {3} x + 2 = 3-x$

We add x to both sides of the equation:

$\frac {5} {3} x + x + 2 = 3\\\frac {5 * 1 + 3 * 1} {3} x + 2 = 3\\\frac {5 + 3} {3} x + 2 = 3\\\frac {8} {3} x + 2 = 3$

We subtract 2 from both sides of the equation:

$\frac {8} {3} x = 3-2\\\frac {8} {3} x = 1$

We multiply by 3 on both sides of the equation:

$8x = 3$

We divide by 8 on both sides of the equation:

$x = \frac {3} {8}$

Thus, the solution of the equation is:

$x = \frac {3} {8}$

Answer:

$x = \frac {3} {8}$

4 0

4 years ago

At a point on the ground 35 ft from the base of a tree, the distance to the top of the tree is 1 ft more than 3 times the height

jolli1 [7]

Answer:

Step-by-step explanation:

This is a question that uses the Pythagorean Theorem.

a = 35 feet

b = x which is the height of the tree.

c = 3*x + 1 so we are trying to find x. Substitute into a b and c

a^2 + b^2 = c^2

35^2 + x^2 = (3x + 1)^2

35^2 + x^2 = 9x^2 + 6x + 1 Subtract x^2 from both sides.

35^2 = 8x^2 + 6x + 1 Subtract 35^2 from both sides.

0 = 8x^2 + 6x + 1 - 35^2

0 = 8x^2 + 6x - 1224

Does this factor?

(x + 12.75)(x - 12)

x - 12 = 0 is the only value that works.

x = 12

The tree is 12 feet high.

Note: I used the quadratic formula to solve this.

6 0

4 years ago

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R/2=(r-4)/7 how do i solve this?

rodikova [14]

You put a value in for r, and keep trying until they equal out, let me know if this helps, or if you need more

5 0

3 years ago

Read 2 more answers