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____ [38]
3 years ago
15

Brian is solving the equation x^2 -3/4 x =15. What value must be added to both sides of the equation to make the left side a per

fect-square trinomial?
Mathematics
1 answer:
Nata [24]3 years ago
5 0
Add 9/16 to both sides then the lady side will be (x- 3/8)^2
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X + 5 ≤ 13 what's the answer for this question?​
wariber [46]

Answer:

Inequality Form: x ≤ 8

Interval Notation: (-∞,8]

Step-by-step explanation:

x + 5 ≤ 13

Subtract 5 on both sides...

13 - 5 = 8

You're left with x ≤ 8

Inequality Form: x ≤ 8

Interval Notation: (-∞,8]

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3 years ago
You have a part-time job painting block towers. Each black has dimensions of 5cm by 5cm by 5cm. You MUST paint all exposed faces
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stuff i be steelin ur points

Step-by-step explanation:

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3 years ago
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Answer:

the answer is B

Step-by-step explanation:

6 0
3 years ago
What is the density ?
zhannawk [14.2K]
Density is the degree of compactness of a substance. It is the degree of consistency measured by the quantity of mass per unit  volume. It is the relationship between the mass of the substance and the amount of space it takes up. I hope it helps. 
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Please help me on this question
Alina [70]

Answer:

DE = 13.4 cm  (to 1 decimal place)

Step-by-step explanation:

Given: ABCD is a square

BC = AC = 12 cm    (opposite sides of a square are congruent)

E is midpoint of BC   (given)

BE = EC  = 12/2 = 6 cm

CD = AB = 12 cm   (opposite sides of a square are congruent)

angle ECD is a right angle (interior angles of a square are 90 deg.)

Consider right triangle ECD

DE = sqrt(EC^2+CD^2)    ............. pythagorean theorem

= sqrt(6^2+12^2)

= sqrt ( 36+144 )

= sqrt (180)

= 2 sqrt(45)

= 13.416 (to three dec. places)

8 0
3 years ago
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