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4 years ago

Estimate the sum 523+117

Mathematics

2 answers:

Anna [14]4 years ago

8 0

Sum of 523+117
700
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gogolik [260]4 years ago

5 0

I think the sum will be 640

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Which numbers are between 14 and 42 and are perfect squares roots

shusha [124]

Answer:

16 (4x4)

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3 years ago

Easy 50 points, one multi choice question

kotegsom [21]

D is the correct answer

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3 years ago

Read 2 more answers

a 120 degree sector of a circle has an area of 67 square centimeters. to the nearest centimeter, what is the diameter of the cir

Vitek1552 [10]

Answer:

16 cm

Step-by-step explanation:

We have to first find the radius of the circle.

The area of a sector is given as:

$A = \frac{\alpha }{360} * \pi r^2$

where α = central angle of the sector = 120°

r = radius of the circle

Therefore:

$67 = \frac{120}{360} * \pi r^2\\\\\pi r^2 = \frac{360 * 67}{120}\\ \\r^2 = \frac{360 * 67}{120 * \pi}\\\\r^2 = 63.98\\\\r = \sqrt{63.98} = 8.0 cm$

The diameter of a circle is twice its radius, therefore:

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3 years ago

Construct a linear equation in standard form.

photoshop1234 [79]

Answer:

Step-by-step explanation:

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3 years ago

-3(y+3)=2y+3 what does y equal?

netineya [11]

[ Answer ]

Y = -12 / 5

[ Explanation ]

Expand:

-3y - 9 = 2y + 3

Add 9 to both sides:

-3y - 9 + 9 = 2y + 3 - 9

Simplify:

-3y = 2y + 12

Subtract 2y from both sides:

-3y - 2y = 2y + 12 - 2y

Simplify:

-5y = 12

Divide both sides by -5:

-5y / -5 = 12 / -5

Simplify:

Y = -12 / 5

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3 years ago