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dexar [7]
3 years ago
10

What makes this question wrong?: When you divide a number by

Mathematics
2 answers:
Mazyrski [523]3 years ago
3 0
The answer is 
B) Twice the original number. Why? because you said.
const2013 [10]3 years ago
3 0
The answer is B because when you divide by 2 you get half of the number. But when you divide by 1/2 you do the opposite, so you multiply by the reciprocal.
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Which fractions are equivalent to 1/8+5/8? Check all that apply.
dolphi86 [110]
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3 years ago
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The number of milligrams of a certain medicine a veterinarian gives to a dog varies directly with the weight of the dog. If the
Andre45 [30]

Answer:

Step-by-step explanation:

A direct variation equation is of the form

y = kx,

where, in words, it reads "y varies directly with x" or "y varies directly as x". In order to use this as a model, we have to have enough information to solve for k, the constant of variation. The constant of variation is kind of like the slope in a straight line. It rises or falls at a steady level; it is the rate of change.

We have that a vet gives a dose of three-fifths mg to a 30 pound dog. If the dose varies directly with the weight of the dog, then our equation is

d = kw and we need to find k in order to have the model for dosing the animals.

\frac{3}{5} =k(30)

Divide both sides by 1/30 to get k alone.

(\frac{1}{30})(\frac{3}{5})=k and

k=\frac{1}{50}

Our model then is

d=\frac{1}{50}w

This means that for every pound of weight, the dog will get one-fiftieth of a mg of medicine.

7 0
3 years ago
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Evaluate the expression when b=-6.
Thepotemich [5.8K]

Answer:

36 +( 5 \times  - 6) - 5 = 36 - 30  - 5 = 1

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Find the first four terms of the sequence given by the following.<br> an = 42-8(n-1), n=1, 2, 3....
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Step-by-step explanation:

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7 0
2 years ago
Solve the compound inequality 9x ≤ –27 or 4x ≥ 36.
leva [86]

Answer:

x  ≤ – 3 or x ≥ 9.

Step-by-step explanation:

Given  : 9x ≤ –27 or 4x ≥ 36.

To find : Solve the compound inequality.

Solution : We have given  9x ≤ –27 or 4x ≥ 36.

For 9x ≤ –27 .

On dividing both sides by 9.

x  ≤ – 3.

For ,  4x ≥ 36.

On dividing both sides by 4.

x ≥ 9.

We can write x  ≤ – 3 or x ≥ 9.

Therefore,  x  ≤ – 3 or x ≥ 9.

3 0
3 years ago
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