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k0ka [10]
3 years ago
14

(2-4d)(2+4d)=0 Help please, Its the 0 property

Mathematics
1 answer:
lianna [129]3 years ago
4 0

Answer:

d1=-1/2,d2=1/2

Step-by-step explanation:

hope this helps

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The scale drawing of a rectangular office measures 5.3 cm by 8 cm. A scale factor of 72 is used to create the actual office. Wha
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Each length is 72 times longer so the actual dimensions are 381.6cm by 576 cm
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3 years ago
Choose the fractions that are greater than 1/2.
Gennadij [26K]
5/8
6/3
7/10
These are all the answers 4/8 is 1/2 and 5/8 is over it there is no half of 3 but 6/3 is 2 and 2 is a whole number it's over 1/2
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3 0
3 years ago
Simplify completely quantity x squared plus 4 x minus 45 all over x squared plus 10 x plus 9 and find the restrictions on the va
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Answer:

A) Quantity x minus 5 over quantity x plus 1, where x≠-1 and x≠-9

Step-by-step explanation:

\frac{x^2 + 4x - 45}{x^2 + 10x + 9}

Simplifying the numerator first:

x² + 4x - 45 using the quadratic formula you get;

(x - 5)(x + 9)

Then simplifying the denominator x² + 10x + 9 using a quadratic formula you get;

(x + 1)(x + 9)

Dividing the numerator and denominator now gives;

\frac{(x - 5)(x + 9)}{(x + 1)(x + 9)}

Cancelling (x + 9) throughout leaves you with;

\frac{x - 5}{x + 1}

The only restrictions here is if x = 1 and 9 which will give an undefined answer.

7 0
3 years ago
Read 2 more answers
Please answer quickly:
julia-pushkina [17]

You need to have variables one one side and constants on the other.  ax - ax + by = c - ax by = c - ax by/b = (c - ax)/b y = (c - ax)/b

8 0
3 years ago
Read 2 more answers
2. Why does the sin Ɵ = cos (90 – Ɵ)?<br><br><br> Show steps
Troyanec [42]

Answer:

R.H.S:

= cos ( 90 - theta )

= cos (90) cos(theta) + sin(90) sin(theta)

= 0 + sin(theta)                                                       =>[ cos(90) = 0   ,  sin(90) = 1]

= sin(theta)

8 0
3 years ago
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