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3 years ago

Estimate 148% of 103

Mathematics

1 answer:

hammer [34]3 years ago

6 0

Answer:

152.44

Step-by-step explanation:

148/100*103=152.44

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A rope 8 feet long is cut into two pieces. One piece is used to form a circle and the other used to form a square. Find a functi

shtirl [24]

<span>1st piece: x feet
2nd piece: 8-x feet
--------------------------
Use the "x" piece to form a circle:
Circumference = "x".
2(pi)*radius = x

radius = x/(2pi)
So, Area = pi[x/(2)]^2 = x^2/(4pi) = (1/4pi)x^2
=========================================================
Use the 10-x piece to form square:
side = (1/4pi)(10-x)
Area = side^2 = (1/16)(10-x)^2

Hope this helps! :)</span>

8 0

2 years ago

Factor as the product of two binomials x^2+3x+2

zhuklara [117]

Answer:

x^2+3x+2 = (x+1)(x+2)

8 0

3 years ago

Read 2 more answers

When can you use the square roots of perfect squares to determine the perfect roots of decimals ?

Alika [10]

If you want to find the decimal value of a square root, you can use the 2 closest perfect squares to them.

Example

Approximate the value of sqrt20

Pick the 2 closest perfect squares, one before and one after 20:

16 and 25.

So, the square root of 20 has to be between 4 and 5.

Since 20 is closer to 16 than it is to 25,

We can estimate the decimal value of sqrt20 to be around 4.4

8 0

2 years ago

NO LINKS!! PART 2: Find the EXACT area and Circumference of each circle

Tema [17]

Answer:

2. center: (2, 5); radius: 3; Area: 9π; Circumference: 6π

4. center: (0, 0); radius: 8; Area: 64π; Circumference: 16π

Step-by-step explanation:

The standard form equation for a circle is ...

(x -h)² +(y -k)² = r² . . . . . . center (h, k), radius r

The value of r is used in the formulas for area (A) and circumference (C):

A = πr²

C = 2πr

Comparing the given equation to the standard form, we see ...

(x -h)² +(y -k)² = r²

(x -2)² +(y -5)² = 9

(h, k) = (2, 5) . . . . center

r² = 9

This tells us ...

r = √9 = 3 . . . . radius

The Area formula uses r² directly:

Area = πr² = π(9)

Area = 9π

The Circumference formula uses r:

Circumference = 2π(3)

Circumference = 6π

Comparing the given equation to the standard form, we find ...

(h, k) = (0, 0) . . . . center

r² = 64 ⇒ r = √64 = 8 . . . . radius

Area = 64π

Circumference = 2π(8) = 16π

7 0

1 year ago

Read 2 more answers

Margo read forty-two pages in 2.5 hours. Pete read six fewer pages in the same amount of time. How long would it take Pete to re

aleksklad [387]

Answer:

<u>5.56 hours</u>

Step-by-step explanation:

Margo read 42 pages in 2.5 hours.

Pete read six fewer pages in the same amount of time.

So, The number of pages that Pete reads = 42 - 6 = 36 pages

So, Pete read 36 pages in 2.5 hours.

let the time needed to read 80 pages x

∴ 36 pages ⇒ 2.5 hours

80 pages ⇒ x hours

∴ $\frac{36}{80} = \frac{2.5}{x}$

Using cross multiplication:

∴ $x = \frac{80*2.5}{36} = \frac{200}{36}=5\frac{5}{9}=5.56$

So, The time taken to read 80 pages

= <u>5.56 hours = 5 hours and 33.33 minutes</u>

7 0

3 years ago