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3 years ago

12

Solve the equation by factoring. z2 − 6z − 27 = 0

1 answer:

Kisachek [45]3 years ago

7 0

The answer is x= 9 and -3

You must fine 2 number that multiply to equal -27 and add to equal -6

(x-9) (x+3)
Then equal the parts of the binomial to zero

x - 9 = 0
x + 3 = 0

You must get x by its self.
When you do so, you'll have the answer as -3 and 9

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A mural of Elvis Presley takes 56 days to complete by seven painters 28 volunteers join the team after the first six days how ma

denpristay [2]

Answer:

10 days

Step-by-step explanation:

We are given that

Each person takes 56 days

7 painters take time= $56\times 7=392$ painter days

In first 6 days , 7 painters take time= $7\times 6=42$ painter days

After 6 days , 28 volunteers are added then,

Total persons=28+7=35

Now, remaining days=392-42=350

Therefore, number of days are required before the painting of the king of rock 'n' roll is completed= $\frac{350}{35}=10$ days

Hence,10 more days are required before the painting of the king of rock 'n' roll is completed

6 0

3 years ago

Find the L.CM of 36,60,126

Ivahew [28]

Answer:

1260

hope this helps

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Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find the midpoint of the segment with the given endpoints.

Ksju [112]

The mid-point for given endpoints is (4,3)

Step-by-step explanation:

a mid-point is the point on a line segment that divides it into two equal portions.

If (x1,y1) and (x2,y2) are the coordinates of vertices of a line segment, then mid-point is given by:

$M = (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})$

given

(x1,y1) = (9,9)

(x2,y2) = (-1,-3)

$M = (\frac{9-1}{2}, \frac{9-3}{2})\\\\=(\frac{8}{2}, \frac{6}{2})\\\\=(4,3)$

The mid-point for given endpoints is (4,3)

Keywords: Coordinate Geometry, Mid-point

Learn more about coordinate geometry at:

#LearnwithBrainly

5 0

3 years ago

Evaluate each value expression for the given value of x: x-5 , x - =22<br> pls fast

masya89 [10]

Answer:

-18

Step-by-step explanation:

-18

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6 0

3 years ago

At a delicatessen, you order a sandwich for $3.70, a soft drink for $1.25, and a quarter pound of pasta for $1.48. You pay with

Oksanka [162]

3.70+1.25+1.48= 6.43.
20-6.43=13.57
You would get $13.57

3 0

3 years ago