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3 years ago

Estimate the sum of 212 +688

Mathematics

2 answers:

cluponka [151]3 years ago

7 0

The answer is 900 and u can round it to 1000

Alenkinab [10]3 years ago

4 0

I would say 900. Hope this helped

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The lengths of the sides of a triangle are 11.25 inches, 9.25 inches, and 10.25 inches. What is the perimeter of the triangle?

solong [7]

Perimeter of the triangle is 30.75 inches.

Step-by-step explanation:

Step 1: Given sides of the triangle = 11.25 in, 9.25 in, 10.25 in

Step 2: Formula for perimeter of triangle = length of sides of the triangle
Step 3: Substitute in the formula

Perimeter = 11.25 + 9.25 + 10.25

= 30.75 inches

8 0

3 years ago

Find the perimeter and area of the regular polygon. Round to the nearest tenth

rosijanka [135]

Answer:

P = 24

A ≈ 41.6

Step-by-step explanation:

The polygon is a regular hexagon, so the triangle shown is a 30-60-90 triangle. So the short leg of the triangle is 2, which makes the side length of the hexagon 4.

That means the perimeter is P = 4 × 6 = 24.

The area of a regular polygon is:

A = ½ aP

where a is the apothem and P is the perimeter.

A = ½ (2√3) (24)

A = 24√3

A ≈ 41.6

4 0

3 years ago

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Find the Quadrant in which csc x< 0 and tan x > 0

Zinaida [17]

Answer:

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( − 9 , − 7 )

(-4,7)

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6 0

3 years ago

This is not math but pls help here are some points

il63 [147K]

Answer:

Introducing Apples new, iBurrito

Step-by-step explanation:

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3 years ago

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A company sells widgets. The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the

sineoko [7]

Answer:

x = $34.45

Step-by-step explanation:

Solution:-

The company makes a profit of $y by selling widgets at a price of $x. The profit model is represented by a parabola ( quadratic ) equation as follows:

$y = -10x^2 + 689x -6775$

We are to determine the profit maximizing selling price ( x )

From the properties of a parabola equation of the form:

$y = ax^2 + bx + c$

The vertex ( turning point ) or maximum/minimum point is given as:

$x = -\frac{b}{2a} \\\\x = - \frac{689}{2*(-10)} = \frac{689}{20}\\\\x = 34.45$

The profit maximizing selling price of widgets would be x = $34.45.

4 0

3 years ago