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Tresset [83]
3 years ago
15

Seven less than the product of three and a number c. Write as an expression

Mathematics
1 answer:
kobusy [5.1K]3 years ago
6 0
(3*c)-7
The product of 3 and c means they would be multiplied and since it’s 7 less than you would subtract 7 from the product
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Sam and Bethan share £54 in the ratio 5:4 how much dose each get
Agata [3.3K]
Ratio 5:4 
Total shares = 5+4 = 9

then to find for 1 share = 54/9 = 6

So Sam share = 6 x 5 = 30
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Poof: 30+24 = 54

3 0
3 years ago
Using the completing-the-square method, rewrite f(x) = x2 + 10x + 7 in vertex form
mr Goodwill [35]

Answer:

f(x) = (x - (-5))^2 + (-18)

Step-by-step explanation:

Given:

f(x) = x^2 + 10x + 7

Rewrite f(x) in vertex form

Solution:

f(x) = ax^2 + bx + c is a quadratic function.

The vertex form of f(x) is a(x - h)^2 + k, where (h, k) is the vertex.

=> f(x) = x^2 + 10x + 7

          = x^2 + 10x + 25 - 18

          = (x + 5)^ - 18

          = (x - (-5))^2 + (-18)

=> f(x) can be rewritten in form of a(x - h)^2 + k, where (h, k) is the vertex, with a = 1, h = -5, k = -18

6 0
3 years ago
2x/x-3 - 6/x-3 . I need a step by step explanation , please
Harman [31]
When adding/subtracting fractions you need a common denominator, but you already have one, which is x-3.  So in general:

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2(x-3)/(x-3)  the (x-3)s cancel out leaving

2

However!  Note that division by zero is undefined, so x cannot equal 3.  (because both original fractions had denominators of x-3)

What this all means is that that expression will equal 2 for all real values of x other than 3.
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damaskus [11]

Answer:

Step-by-step explanation:

Ytigr

8 0
3 years ago
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What value of c makes the polynomial below a perfect square?
Paladinen [302]

Answer:

Step-by-step explanation:

C.

x² + 10x + 25 = (x+5)²

4 0
2 years ago
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