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Zigmanuir [339]
3 years ago
6

Do u need a common denominator if you have adding and dividing in fractions? 

Mathematics
2 answers:
Igoryamba3 years ago
8 0
No you don't because you use the reciprocal and then multiply to divide the fractions, not a common denominator, you need that when there are different denominators and you are adding/subtracting
Rama09 [41]3 years ago
4 0
You only need a common denominator for adding and subtracting! <span />
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What is the radius and center of the circle given by the equation (x-5)^{2}+(y+2)^{2} = 81/4
artcher [175]

Answer:

The center is (5, -2) and the radius is 9/2

Step-by-step explanation:

The equation of a circle can be written by

(x-h) ^2 + (y-k)^2 = r^2

where (h,k) is the center and r is the radius

(x-5)^{2}+(y+2)^{2} = 81/4

( (x-5)^{2}+(y- -2)^{2} = (9/2)^2

The center is (5, -2) and the radius is 9/2

6 0
2 years ago
in order to encourage students to show up early to a school dance , the dance comittee decides to charge less for those who come
nadya68 [22]
It would be $2.25 if each student pays one more penny than the last one the penny count would be up to 150 pennies times the number of student which is 150 so multiply and add your decimal
7 0
2 years ago
Given a rectangle with lengths of 7 meters and widths of 5 metres,what would be the perimeter
Vsevolod [243]

Answer:

Perimeter = 24 meters

step by step explanation

3 0
2 years ago
Suppose the amounts of M&amp;M's a machine dispenses into packages has a normal distribution with a mean of 25 M&amp;M's and a s
emmainna [20.7K]

Answer:

16%

Step-by-step explanation:

The mean is 25, and the standard deviation is 1.

26 is 1 standard deviation above the mean.

According to the empirical rule, 68% of the population is between -1 and +1 standard deviations.  That means that 32% is less than -1 or greater than +1 standard deviations.  So half of that, or 16%, is greater than +1 standard deviations.

5 0
3 years ago
Clara wants to cover the top of her jewelry box. The top of the box is a rectangle with a length of 9.4 cm and a width of 8.3 cm
Pavlova-9 [17]

Answer: 78.02 cm²


Step-by-step explanation:

1. To solve this problem you need to apply the formula for calculate the area of a rectangle, which is shown below:

A=l*w

Where A is the area of the rectangle, l is its lenght and  w is its width.

2. You know that the rectangle has a length of 9.4 cm and a width of 8.3 cm, therefore, you must substitute these values into the formula. Then, you obtain the following result:

A=(9.4cm)(8.3cm)\\A=78.02cm^{2}


5 0
3 years ago
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