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Anarel [89]
4 years ago
14

What is the reciprocal of 7 1/3? whats the reciprocal?​

Mathematics
2 answers:
nordsb [41]4 years ago
8 0

Answer:

3/22

Step-by-step explanation:

Reciprocal means the inverse of the fraction. For your mixed number 7 and 1/3, turn it into fraction by multiplying 7 with the denominator which is 3, then add the numerator which is 1 to get the numerator of a normal fraction which is 22. The numerator remains the same.

The fraction is 22/3. As mentioned above, reciprocal means the inverse, so the final answer is 3/22

Ad libitum [116K]4 years ago
5 0
3/22 but in a decimal 0.1363
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Answer:

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Step-by-step explanation:

When an object moves with a speed So (So measured in still water) in a river with speed Sr:

If the object moves along the current (downstream), then the actual speed of the object will be:

S = So + Sr

If the object moves upstream, then the velocity will be:

S = So - Sr

In this case we know the speed of the river downstream is 2 mi/h

Sr = 2mi/h

And we know that the salmon can swim 12 miles upstream in the same time (T) that it can swim 24 miles downstream.

Here you need to remember the relation:

Distance = Time*Speed.

Then we know that:

24 mi = (So + 2mi/h)*T

12 mi = (So - 2mi/h)*T

Now we can take the quotient of these two equations to get:

(24mi/12mi) = ( (So + 2mi/h)*T)/((So - 2mi/h)*T)

2 = (So + 2mi/h)/(So - 2mi/h)

Let's multiply both sides by the denominator of the right part:

2*(So - 2mi/h) = (So + 2mi/h)

2*So - 4mi/h = So + 2mi/h

Now we need to isolate So, the speed of the salmon in still water:

2*So - So = 2mi/h + 4mi/h

So = 6mi/h

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3 years ago
mr.mcbride asks students to find the volume of the triangular pyramid below. which student wrote the correct expression for the
Black_prince [1.1K]

<u>Given</u>:

Given that the height of the pyramid is 20 inches.

The sides of the triangle are 9 in, 12 in and 15 in.

The expression for the area of the base written by JO is \frac{1}{2}(9 \cdot 15)

The expression for the area of the base written by MAE is \frac{1}{2}(9 \cdot 12)

We need to determine the correct expression for the area of the base written by the student.

<u>Expression for the area of the base:</u>

The area of the base of the triangular prism can be determined using the formula,

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Substituting in the above formula, we get;

B=\frac{1}{2}(9 \cdot 12)

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Hence, the expression wrote by MAE is correct.

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