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2 years ago

Write as a decimal fraction of a cm (a) 5 mm (b) 8mm

2 answers:

8 0

1 mm = 0.1 cm

(a) 5 mm

5 × 0.1 = 0.5

Fraction :- 5/0.5
5 ÷ 0.5 =10
Decimal:- 10

(b) 8 mm

8 × 0.1 = 0.8

Fraction:- 8/0.8
8 ÷ 0.8 = 10
Decimal:- 10

GarryVolchara [31]2 years ago

5 0

A. 5 mm
5/0.5
10

b. 8 mm
8/0.8
10

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Answer:

Step-by-step explanation:

48% of n = 0.48n = 40.32

n = 84

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2 years ago

Which number produces a rational number when added to 1/5

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Answer: 2/3

Step-by-step explanation:

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3 years ago

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Sara is working on a Geometry problem in her Algebra class. The problem requires Sara to use the two quadrilaterals below to ans

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Part A:

Given a square with sides 6 and x + 4. Also, given a rectangle with sides 2 and 3x + 4

The perimeter of the square is given by 4(x + 4) = 4x + 16

The area of the rectangle is given by 2(2) + 2(3x + 4) = 4 + 6x + 8 = 6x + 12

For the perimeters to be the same

4x + 16 = 6x + 12
4x - 6x = 12 - 16
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x = -4 / -2 = 2

The value of x that makes the <span>perimeters of the quadrilaterals the same is 2.

Part B:

The area of the square is given by

$Area=(x+4)^2=x^2+8x+16$

The area of the rectangle is given by 2(3x + 4) = 6x + 8

For the areas to be the same

$x^2+8x+16=6x+8 \\ \\ \Rightarrow x^2+8x-6x+16-8=0 \\ \\ \Rightarrow x^2+2x+8=0 \\ \\ \Rightarrow x= \frac{-2\pm\sqrt{2^2-4(8)}}{2} \\ \\ = \frac{-2\pm\sqrt{4-32}}{2} = \frac{-2\pm\sqrt{-28}}{2} \\ \\ = \frac{-2\pm2i\sqrt{7}}{2} =-1\pm i\sqrt{7}$

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3 years ago

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Answer:

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2 years ago

What is the value of h in the equation 8h = 60

irga5000 [103]

Answer:

h= 7.5

Step-by-step explanation:

8h=60

One solution was found :

h = 15/2 = 7.500

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

8*h-(60)=0

Step by step solution :

Step 1 :

Pulling out like terms :

1.1 Pull out like factors :

8h - 60 = 4 • (2h - 15)

Equation at the end of step 1 :

Step 2 :

Equations which are never true :

2.1 Solve : 4 = 0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

2.2 Solve : 2h-15 = 0

Add 15 to both sides of the equation :

2h = 15

Divide both sides of the equation by 2:

h = 15/2 = 7.500

One solution was found :

h = 15/2 = 7.500

Processing ends successfully

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3 years ago

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