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Gala2k [10]
3 years ago
11

Can I get some help please

Mathematics
1 answer:
klasskru [66]3 years ago
4 0
A^2 - b^2 = (a+b)(a-b)

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What is 8x9-6+7(5-4x8)
loris [4]

Answer:

8 x 9 − 28 x 8 + 29

Step-by-step explanation:

3 0
3 years ago
Find the area of a sector with a central angle of 32° and a radius of 8.5 millimeters. Round to the nearest tenth.
Mrrafil [7]
360 degrees in a circle
32/360 of total area is sector area

area=pir^2
r=8.5
area=pi8.5^2
area=226.980022 mm^2
multiply it by 32/360
sector=20.17600195555556

round
sector=20.2

C is answer
5 0
3 years ago
Solve by completing the square​
erastovalidia [21]

Answer:

Your answers would be:

x = 10 and x = -8

Step-by-step explanation:

Solve for the zeros:

x² - 2x - 78 = 2

Subtract both sides by 2.

x² - 2x - 80 = 0

Use the quadratic formula: x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

a = 1

b = -2

c = -80

Plug in and solve:

x=\frac{-(-2)\pm\sqrt{(-2)^2-4(1)(-80)}}{2(1)}\\\\x=\frac{2\pm\sqrt{(-2)^2-4(1)(-80)}}{2(1)}\\\\x=\frac{2\pm\sqrt{4-4(-80)}}{2(1)}\\\\x=\frac{2\pm\sqrt{4+320}}{2(1)}\\\\x=\frac{2\pm\sqrt{324}}{2(1)}\\\\x=\frac{2\pm18}{2}\\

Solve for +:

x=\frac{2+18}{2}\\\\x=\frac{20}{2}\\\\x=10

Solve for -:

x=\frac{2-18}{2}\\\\x=\frac{-16}{2}\\\\x=-8

5 0
3 years ago
What is the weight of a whole cookie compared to the to the total weight of all the cookie crumbs?
Thepotemich [5.8K]

Answer:

The whole cookie weighs more.

Step-by-step explanation:

Parts make up the whole? At first i would think that the weight

would be the same; however unless there is a 'perfect' cookie out

there, air does get trapped in the whole cookie, which is expunged

from the whole cookie when broken apart. Macro level = the same,

micro level = the cookie as a whole weighs more.

3 0
3 years ago
A television normally sells for $329 this week it’s on sale at 60% ofc normal price what is the sale price
Natasha2012 [34]

Answer:

Step-by-step explanation:131.00

8 0
3 years ago
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