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Artemon [7]
3 years ago
12

Sara completes 2/5 of her math homewIrk in class. What percentage is left for Sara to finish

Mathematics
1 answer:
Bad White [126]3 years ago
3 0

Step-by-step explanation:

Well 3/5 is left.

20 × 5 = 100

She did 40% because 2/5 = 4/10

So if 20 × 3 = 60 the there is 60% left

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Apply the distribution property to produce an equivalent expression 2(7g + 7)
ira [324]
21+g or it could be(still the same thing) 21 + 1g
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4 years ago
What is the area of the trapezoid shown below?​
Olin [163]

Answer:

78 sqr units

Step-by-step explanation:

Use the Pythagorean Theorem to help find the base opposite the two.

The base of the second parallel line is sqrt(  (15^2) - (12^2)  ) = sqrt(81) = 9

The second base = 9 + 2 = 11

Area = (b1 + b2)*h/2

h = 12

b1 = 2

b2 = 11

h = 12

Area = (11 + 2)*12/2

Area = 13 * 12/2

Area = 78 square units

7 0
3 years ago
Read 2 more answers
What is the variance?
kotegsom [21]

Answer:

Variance is the squared deviation and deviation is the difference of observed value from other values

Step-by-step explanation:

Variance is the squared deviation and deviation is the difference of observed value from other values

variance=\text({standard deviation})^2

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8 0
3 years ago
Solve by substitution <br>-4x-2y=-12 <br>4x+8y=-24
kykrilka [37]
I hope this helps you



-4x-2y+4x+8y= -12-24



6y= -36


y= -6



-4x-2. (-6)= -12


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-4x= -24


x=6


(6, -6)
5 0
3 years ago
I’m confused on this one
Lisa [10]

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3 0
3 years ago
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