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Afina-wow [57]
3 years ago
13

What is the area help me plz

Mathematics
1 answer:
Katena32 [7]3 years ago
6 0

The area is 132 cm.

The larger rectangle area is : 108 cm

12×9=108

The small rectangle area is : 24 cm

4×6=24

Now add:

24+108=132

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Two workers finished a job in 12 days. How long would it take each worker to do the job by himself if one of the workers needs 1
Lorico [155]

Two workers finished a job in 7.5 days.

How long would it take each worker to do the job by himself if one of the workers needs 8 more days to finish the job than the other worker?

let t = time required by one worker to complete the job alone

then

(t+8) = time required by the other worker (shirker)

let the completed job = 1

A typical shared work equation

7.5%2Ft + 7.5%2F%28%28t%2B8%29%29 = 1

multiply by t(t+8), cancel the denominators, and you have

7.5(t+8) + 7.5t = t(t+8)

7.5t + 60 + 7.5t = t^2 + 8t

15t + 60 = t^2 + 8t

form a quadratic equation on the right

0 = t^2 + 8t - 15t - 60

t^2 - 7t - 60 = 0

Factor easily to

(t-12) (t+5) = 0

the positive solution is all we want here

t = 12 days, the first guy working alone

then

the shirker would struggle thru the job in 20 days.

8 0
3 years ago
Read 2 more answers
Line p is parallel to side BC.
Anna71 [15]

Answer:

73 degrees

Step-by-step explanation:

The interior angle equals to 180. 73+37+ m<2 = 180. That means angle 2 is 70 degrees.

m<1 and m<C and equal due to alternate interior angles. That means angle 1 is 37 degrees.

We know angles 1 and 2 equal to 37 and 73. That means the angles are equal to the interior triangle. 70+37= 107.      180-107= 73 Degrees

4 0
3 years ago
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If the perimeter of isosceles ΔABC is 45 and side AC is 11, give one possible value for the length of side BC.
solmaris [256]

Hello from MrBillDoesMath!

Answer:

23

Discussion:

In ΔABC side AC is 11, but as the triangle is isosceles the other leg also has length 11. Let the third, unknown side, be called x. Then

11 + 11 + x = Perimeter = 45.

11 + 11 + x = 45                 => as 11 + 11 = 22

22 + x = 45                      => subtract 22 from both sides

x = 45 -22 =  23

Thank you,

MrB

5 0
3 years ago
The image of ΔABC after a reflection across Line E G is ΔA'B'C'. 2 triangles are shown. A line of reflection is between the 2 tr
nirvana33 [79]

Answer:  

It's A - F is the midpoint of AA' because Line E G bisects AA'

Step-by-step explanation: :D

6 0
3 years ago
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EASY BRAINLIEST PLEASE HELP!!
laila [671]

Answer:

\huge\boxed{D.}

Step-by-step explanation:

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\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
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