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balu736 [363]
3 years ago
9

Which phrase matches the algebraic expression below 2(x-7)+10

Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
8 0

Answer:

The sum of a number and 7 multiplied by 2 is increased by 10

Step-by-step explanation:

zubka84 [21]3 years ago
7 0
The sum of a number 7 multiplied by 2 then is increased by 10
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Could someone help plz
Komok [63]

Answer:

The radius of the sphere is approximately 62.71 cm

Step-by-step explanation:

The question relates to the definition of a sphere

The given parameters are;

The distance between the sharp parallel blades through which the sphere is rolled = 77 centimeters

The radii of the circular faces left by cutting the sphere with the blade = 39 cm  and 60 cm

From the triangles formed by the cross-section of the sphere, we have;

AB ║ DE Given

∠A ≅ ∠E, ∠D ≅ ∠B Alternate angles

∠C ≅ ∠C by reflective  property

∴ ΔABC ~ ΔDCE by Angle-Angle similarity theorem

CF/CG = AB/DE = 78/120 = 13/20

CF = CG × 13/20

CF + CG = 77

∴ CG × 13/20 + CG = 77

33·CG/20 = 77

∴ CG = 140/3

CF = 13/20 × CG = 13/20 × 140/3 = 91/3

CF = 91/3

The diameter of the sphere AE = AC + EC

By Pythagoras's theorem

AC = √(FA² + CF²) = √(39² + (91/3)²) = 13·√(130)/3

EC = √(CG² + GD²) = √((140/3)² + 60²) = 20·√(130)/3

∴ AE = AC + EC = 13·√(130)/3 + 20·√(130)/3 = 11·√(130)

The diameter, 'D', of the sphere, AE = 11·√(130)

The radius of the sphere = D/2 = 11·√(130)/2 ≈ 62.71 cm

7 0
2 years ago
I don’t understand any of the below. Can you please help?
ehidna [41]
-25+(-12)=-37
14-(-20)=34
-4+(-10)=-14
6 0
2 years ago
Read 2 more answers
Can a triangle with side lengths of 8, 15, and 17 be a right triangle?
Nookie1986 [14]
Yes it is. 
Glad to help!
7 0
3 years ago
Read 2 more answers
Write each ratio as a fraction in lowest terms. 8 to 9​
3241004551 [841]

Answer:

8/17 and 9/17

Step-by-step explanation:

8:9

both add up to 17

so it can be 8/17 or 9 but it cannot be simplified unless if you want them both as a mixed number which is

8/17 as a mixed number is 2 1/17

9/17 as a mixed number is 1 8/17

8 0
3 years ago
50 POINTS!URGENTTTTT<br><br>create a systems of equations that has infinite solutions<br>​
Citrus2011 [14]

Answer:

x-10 +x = 8 + 2x - 18

Step-by-step explanation:

4 0
3 years ago
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