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3 years ago

What is the LMC for 2x^2 - 8x + 8 and 3x^2 + 27x -30?

Mathematics

1 answer:

Vsevolod [243]3 years ago

4 0

Answer:

Step-by-step explanation:

1st step: solve the exponential number

2x^2=4x

3x^2=9x

2nd step: rewrite the number sentence with the exponent solved

4x-8x+8 9x+27x-30

3rd step : solve

4x-8x=-4x 9x+27x=36x

-4x+8= 36x-30=

4 6

Step 4: See what least common multiples they have in common

4 LCM =2 * 2= 4 6 LCM= 2*3=6

So the LCM is 2

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The point (3,-7) lies on a circle and the center of the circle is at (-2,-7). What is the equation of this circle

melomori [17]

Step-by-step explanation:

the answer is in the above image

4 0

3 years ago

The diagram shows a 3 cm x 5 cm x 4 cm cuboid

Rainbow [258]

Answer:

a) The length of segment AC is approximately 5.83 centimeters.

b) The angle ACD is approximately 34.5º.

Step-by-step explanation:

a) Since $AB \perp BC$ , the length of segment $AC$ is determined by Pythagorean Theorem, that is:

$AC = \sqrt{(5\,cm)^{2}+(3\,cm)^{2}}$

$AC \approx 5.831\,cm$

The length of segment AC is approximately 5.831 centimeters.

b) Since $AB \perp BC \perp AD$ , the length of segment $AD$ is determined by this Pythagorean identity:

$AD = \sqrt{(3\,cm)^{2}+(5\,cm)^{2}+(4\,cm)^{2}}$

$AD \approx 7.071\,cm$

The angle ACD is determined by the following trigonometric expression:

$\cos C = \frac{AC}{CD}$

$\cos C = \frac{5.831\,cm}{7.071\,cm}$

$\cos C = 0.825$

$C = \cos^{-1} 0.825$

$C \approx 34.448^{\circ}$

The angle ACD is approximately 34.448º.

4 0

3 years ago

2x + 7 = 27 or 3 + 3x = 30

Leokris [45]

Step-by-step explanation:

2x + 7 = 27 OR 3 + 3x = 30.

2x = 27 - 7 OR 3x = 30 - 3

2x = 20 OR 3x = 27

x = 20/2 OR x = 27/3

x = 10 OR x = 9

5 0

2 years ago

Solve the expression: 45x+-3(4-6)

joja [24]

45x+6 is the answer

Simply
Subtract the numbers
45x-3(4-6)
45x-3(-2)
Multiply the numbers
Solution
45x+6

5 0

3 years ago

Read 2 more answers

0.4 x 10 =....<br>1.25 x 10 = <br>97.465 x10 =

chubhunter [2.5K]

Answer:

0.4 × 10 = 4

1.25 × 10 = 12.5

97.465 × 10 = 974.65

3 0

3 years ago