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adoni [48]
3 years ago
11

Expand and simplify : A) (x+7)(x+10). B) (X-3) (X-9)

Mathematics
1 answer:
garri49 [273]3 years ago
6 0

Answer:

Step-by-step explanation:

A) Using the foil method and distribution, you should get x²+10x+7x+70 from (X×X)+(X×10)+(X×7)+(7×10). When you combine these like terms, you get x²+17x+70.

B) Using the same ideology from part A, when you multiply x-3 into x-9. you should get x²-9x-3x+27. Simplifying this will give you x²-12x+27.

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1) If the designer measures the pond and determines that the length of the pond across is 400
ozzi

Answer: 200

Step-by-step explanation: to get the radius you divided by 2. bc there is only 2 sides , have a great day.

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3 years ago
How do you write 0.0896 in scientific notation?
il63 [147K]

Answer: 8.96 × ten to the power of two

Sorry, I couldn't write ten to the power of two in numbers...but you get it right?

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3 years ago
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An 1111-inch string is cut into 33 equal pieces. Which expression shows the length of each piece?
FromTheMoon [43]
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3 years ago
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A circle with radius of 4 cm sits inside a circle with radius of 11 cm.
kap26 [50]

The area of the shaded region = 330 sq cm

Step-by-step explanation:

Given,

The radius of small circle (r) = 4 cm

The radius of large circle (R) = 11 cm

To find the shaded region

Formula

The area of circle of radius r = πr^{2} sq cm

So, The radius of the small circle = π×4^{2} sq cm = 16π sq cm

The radius of the large circle = π×11^{2} sq cm = 121π sq cm

Hence the area of the shaded region = 121π-16π sq cm

= 105π sq cm

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5 0
3 years ago
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Does somebody knows how to do this problem?
pshichka [43]

Answer:

Angle Q is 51°

Angle R is 96°

(x=5 and the exterior angle is 84°)

Step-by-step explanation:

Exterior Angle Theorem says that angle that's outside the triangle (extend a side and see the angle between the side extension and the side) IS Equal to the sum of the two angles that are farther away.

17x - 1 = 33 + 10x + 1

Get all the x's on one side of the equation.

17x-10x - 1 = 33 + 10x-10x+1

7x - 1 = 33 + 1

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7x = 35 divide by 7

7x/7 = 35/7

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84° + R = 180°

R = 96°

6 0
2 years ago
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