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2 years ago

£200 into the ratio 3:5

1 answer:

3 0

Add up the ratio so 3+5 which gives you 8. Then divide the total money by how many parts.
200/8=25
25x3=75
25x5=125
Answer:75:125

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Help me please don’t understand

Nina [5.8K]

Use order of operations, or PEMDAS which stands for Parenthesis, Exponent, Division, Addition, and Subtraction.

Do those operations in that order. Can you try?

What will be the first thing you do here, according to PEMDAS?

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3 years ago

Rewrite e^{x}= y into logarithmic form.

Aleksandr-060686 [28]

Answer:

$x=\ln{y}$

Step-by-step explanation:

The natural logarithm function is the inverse of the natural exponential function.

$\text{power}=\text{base}^{\text{exponent}}\\\\\text{exponent} \: =\: \log_\text{base}{\text{power}$

are equivalent.

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2 years ago

A 2000 gallon fish aquarium can be filled by water flowing at a constant rate in 10 hours. When a decorativve rock is placed in

Elza [17]

Answer:

The volume of the rock is 13.368 cubic feet.

Step-by-step explanation:

The volume of the rock ( $V_{r}$ ), measured in gallons, is equal to the volume of the fish aquarium without the decorative rock ( $V'$ ) minus the volume of the fish aquarium with the decorative rock ( $V''$ ), both measured in gallons.

Since the water flow is at constant rate, the volume of the rock is expressed by the following equation:

$V_{r} = V' - V''$

$V_{r} = \dot V \cdot (\Delta t_{1}-\Delta t_{2})$ (1)

Where:

$\dot V$ - Flow rate, measured in gallons per hour.

$\Delta t_{1}$ - Filling time of the fish aquarium without the decorative rock, measured in hours.

$\Delta t_{2}$ - Filling time of the fish aquarium with the decorative rock, measured in hours.

And the flow rate is:

$\dot V = \frac{2000\,gal}{10\,h}$

$\dot V = 200\,\frac{gal}{h}$

The flow rate is 200 gallons per hour.

If we know that $\dot V = 200\,\frac{gal}{h}$ , $\Delta t_{1} = 10\,h$ and $\Delta t_{2} = 9.5\,h$ , then the volume of the rock is:

$V_{r} = \left(200\,\frac{gal}{h}\right)\cdot (10\,h-9.5\,h)$

$V_{r} = 100\,gal$

$V_{r} = 13.368\,ft^{3}$

The volume of the rock is 13.368 cubic feet.

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3 years ago

Expand the expression and combine like terms:<br> 1+4(6p-9)

Sedaia [141]

$1+4(6p-9) \\ \\ 1 + 24p - 36 \\ \\ 24p - 35 \\ \\$

The final result is: 24p - 35.

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3 years ago

Read 2 more answers

1. There are 21 boys and 28 girls in the running club. What is the ratio of girls to boys?

Vikki [24]

Step-by-step explanation:

28:21

4:3 ratio

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3 years ago

Read 2 more answers