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3 years ago

Which equation has roots of -1 and 2?

Mathematics

1 answer:

Free_Kalibri [48]3 years ago

4 0

Answer:

(x+1) (x-2) = 0

Step-by-step explanation:

Roots = -1 and 2

This means

X = -1 or x = 2

(x + 1) = 0 or (x -2) = 0

Combine the two equations

(x+1) (x-2) = 0

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How to evaluate and show the work of simplifying 72-9(x+4)+4

zmey [24]

Answer:

40-9x

Step-by-step explanation:

calculate 72-9x-36+4

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3 years ago

Convert 49 degrees F to degrees celsius. the formulas are C=5/9 (F-32). F=9/5 C+32.

gulaghasi [49]

Step-by-step explanation:

c=5/9(49-32)

c=9.4

simply use the formula

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3 years ago

In the diagram, CA is tangent to circle P. The e

Alecsey [184]

Answer:

C. 15 cm

Explanation:

The radius is the same in a circle. PA and PB has same length of 8 cm.

In order to find AC, find the length of PA and PC.

Here given:

PA = 8 cm

PC = PB + BC = 8 cm + 9 cm = 17 cm

Hence solve using Pythagoras theorem:

a² + b² = c²

AC² + PA² = PC²

AC² + 8² = 17²

AC² = 289 - 64

AC = √225

AC = 15

6 0

3 years ago

Read 2 more answers

What is the decimal equivalent of 9.7x10^5

Usimov [2.4K]

Answer:

B. 970,000

Step-by-step explanation:

Move the decimal 5 places to the right, since the exponent is a positive 5.

9.7 x 10⁵ = 970,000.

If it is a negative exponent, you would have to move the decimal to the left.

5 0

3 years ago

Please find the area...

Lyrx [107]

( 356 x 280 ) - ( 103 x 60 )
99 680 - 6180 = 93500
answer = 93500

3 0

3 years ago