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Helga [31]
3 years ago
14

What is the common denominator for theses: 5/6, 7/9, 3/5

Mathematics
1 answer:
bazaltina [42]3 years ago
4 0
You are correct

For it to be a common denominator, It must be divisible by all the other denominators.

Out of your options, 90 is the only one that can be factorised with a 6, 9 and 5
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Can someone solve this please
Radda [10]
She is incorrect because x^2 can still be factored.
5 0
3 years ago
What are benefits of having a quadratic in standard form
jasenka [17]
Standard form allows you to easily find the y-intercept and determine if the parabola is concave up or down. Also, if it is not factorable, then it is in the correct form to apply the quadratic formula to find the x-intercepts.
7 0
3 years ago
A red-light flashes every 28 seconds. A green light flashes every 24
Maslowich

Answer:

168 seconds

I edited the answer.

Step-by-step explanation:

To find the the time taken for both lights to flash at the same time, we need to find the lowest common multiple of 28 and 24.

28 x 6 = 168, 24 x 7 = 168

The LCM of 28 and 24 is 168.

So it takes 168 seconds for both lights to flash at the same time.

6 0
3 years ago
Read 2 more answers
A staircase has an angle of elevation of 28° anı
AveGali [126]

Hi there!

We can use right-triangle trigonometry to solve.

We are given the HYPOTENUSE and ADJACENT sides, so we must use cosine in this instance.

cosθ = Adjacent/Hypotenuse

We can plug in what is given:

cos(28) = A/17

Solve for 'A':

17cos(28) = <u>15.01 ft</u>

5 0
3 years ago
The ratio of male teachers to female teachers in a school is 1 to 5. If there are 60females teachers how many male teachers are
ANTONII [103]

Answer:

There are 12 male teachers.

Step-by-step explanation:

Ratio of male teachers to female teachers in a school is 1 to 5.

For every 1 male teacher, there is one female teacher.

There are 60 female teachers.

Divide 60 by 5 = 12.

12 times 1 = 12

There are 12 male teachers.

3 0
3 years ago
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