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Anettt [7]
2 years ago
8

If BFD and AFC are right angles and

Mathematics
1 answer:
wlad13 [49]2 years ago
4 0

Answer:

72

Step-by-step explanation:

If BFD is a right angle and it gives you CFD that means that you do 90 - 72 to find CFB cause it 90 all togther

CFB = 18 deg

now it also tells us CFA is a 90 deg angle so we do the same thing

90 - 18 = 72

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10 men can do the work in 8 days. how many men should be reduced to finish the work in 10 days​
e-lub [12.9K]

If Reducing 2 men will bbe enough too finish the work in 10 days

For rate of work use the formualar

rate of work = quantity of work / duration

10 men can do the work at a rate of  =  1 / 8

x men can do same work at a rate of = 1 / 10

x * ( 1 / 8 ) = 10 * ( 1 / 10 )

x = 1 * 8 = 8

therefore 8 men can do the work in 10 days

number of men reduced = 10 men - 8 men = 2 men

Hope it helped

7 0
2 years ago
Simplify 150−55t to get the correct answer
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4 0
3 years ago
Read 2 more answers
Help me with this math question please I'm giving away brainliests ​
alex41 [277]

Answer:

Step-by-step explanation:

Given function is,

f(x)=\frac{2x^2+6x}{-4x^2+8x}

       =\frac{2x(x+3)}{-4x(x-2)}

This function is not defined at "x(x - 2) = 0"

Therefore, for the values of x = 0 and 2, given function is not defined.

Vertical asymptote → x = 2 [Denominator = 0]

For Horizontal asymptote → [\frac{2x^2}{-4x^2} =-\frac{1}{2}]

Therefore, horizontal asymptote → y = -\frac{1}{2}

x-intercept,

For f(x) = 0,

Numerator of the function = 0

2x² + 6x = 0

2x(x + 3) = 0

x = -3

Therefore, x - intercept → (-3, 0)

For y-intercept,

x = 0

f(0) = 0

Therefore, graph has no y-intercept.

For holes on the graph,

Since, function is not defined at x = 0,

f(x) = \frac{(x+3)}{-2(x-2)}

f(0) = \frac{(0+3)}{-2(0-2)}

     = \frac{3}{4}

Therefore, hole on the graph → (0, \frac{3}{4})

8 0
3 years ago
Rob is saving to buy a new MP3 player. For every $13 he earns babysitting, he saves $6. On Saturday, Rob
OverLord2011 [107]

Answer:

54$

Step-by-step explanation:

We know that for each 13$ Rob earns babysitting, he saves 9$. Thus, we can separate the money he earns into groups of 13, and for each group of 13, we can add 9$ to his savings.

Assume that Rob has 78$ lying on a table. He grabs 13 of them, leaving 65, and puts 9$ to the side for savings. He does this 5 more times (as 65 divided by 13 is 5, so Rob would make 5 groups of 13 out of his 65$ that is left), meaning that he now has 5+1  (the original group) = 6 groups of 9. 9*6=54, so he saves 54$. Please let me know if you have any further questions!

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4 0
3 years ago
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in the library, there are 9 rectangular tables with 8 pupils each and square tables with 4 pupils each. how many square tables a
FinnZ [79.3K]

Answer:

9 rectangular tables and 7 sqaure tables

Step-by-step explanation:

9 x 8 = 72

100-72=28

4x7=28

3 0
2 years ago
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