All categories

3 years ago

2. MARBLES The ratio of blue marbles to white marbles in a bag is 4 to 5.

Mathematics

2 answers:

Paladinen [302]3 years ago

8 0

Answer:

There are 12 marbles

Step-by-step explanation:

blue : white

4 : 5

White = 15

x : 15

So,

4/5 = x/15

Cross multiply,

4 × 15 = 5 · x

60 = 5x

60 / 5 = x

12 = x

4 : 5 = 12 : 15

ohaa [14]3 years ago

5 0

4 blue marbles. 5 white marbles. 5/15=3. 3x4=12. i think it’s 12 marbles.

You might be interested in

Find the slope of the line y = 5x + 4.

avanturin [10]

Answer:

x=1/5y+−4/5

Step-by-step explanation:

Let's solve for x.

y=5x+4

Step 1: Flip the equation.

5x+4=y

Step 2: Add -4 to both sides.

5x+4+−4=y+−4/5x=y−4

Step 3: Divide both sides by 5.

5x/5=y−4/5x=1'5y+−4'5

Answer:

x=1/5y+−4/5

( I hope this was helpful) >;D

6 0

2 years ago

Infinite algebra1,multi step equations.-18-6k=6(1+3k)

True [87]

Oh thats easy. It's a piece of cake. Just use your calculator

4 0

3 years ago

Find dyldx.<br> 3. y=2x sin(3x)

vredina [299]

Answer:

$\large\boxed{\dfrac{dy}{dx}=2\sin(3x)+6\cos(3x)}$

Step-by-step explanation:

$\dfrac{dy}{dx}=(2x\sin(3x))'\\\\\text{use}\ \bigg(g(x)\cdot f(x)\bigg)'=g'(c)f(x)+g(x)f'(x)\\\\\text{and}\ \bigg(f(g(x))\bigg)'=f'(g(x))\cdot g'(x)\\\\\dfrac{dy}{dx}=(2x)'(\sin(3x))+(2x)(\sin(3x))'\\\\\dfrac{dy}{dx}=2\sin(3x)+(2x)(\cos(3x)\cdot(3x)')\\\\\dfrac{dy}{dx}=2\sin(3x)+2x\cos(3x)\cdot3\\\\\dfrac{dy}{dx}=2\sin(3x)+6\cos(3x)$

6 0

3 years ago

Witch method will NOT get you to the point (1.5, 4)?

Bad White [126]

Left down, or “Starting at the origin, go 4 spaces to the right and then 1and1/2 spaces up.” This would bring you to the point (4,1and1/2)

8 0

3 years ago

Using the letters suggested, construct a simple formula:

kompoz [17]

Answer:

Speed = distance / time

Time = distance/ Speed

Distance = Speed x time

8 0

3 years ago