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larisa86 [58]
3 years ago
15

Which of the following is a solution of x2 + 6x = −18?

Mathematics
1 answer:
Rus_ich [418]3 years ago
6 0
X= 9/4 i think i dont know
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Marvin is buying a watch from his brother
I am Lyosha [343]

Answer:

$30 down  

and 10 installments of $10 each

Step-by-step explanation:

paying $30 down means the left price to divide into installments is : 130-30 = 100

since he will pay the rest in equal installments, we divide  by the number of installments to get how much each one will be :

100/10 = $10

3 0
3 years ago
Write the sum of 5x2 + 2x - 10 and 2x2 + 6 as a polynomial in standard form.
vaieri [72.5K]

Answer:

7x^2+2x-4

Step-by-step explanation:

a standard form is ax+by=c

5x^2 add 2x^2=7x^2 then -2x but when you have a -10 +6 you get -4 giving you the answer of 7x^2 +2x -4

7 0
3 years ago
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Which inverse operation would be used to verify the follong equation? 102 / 3 = 34
Flauer [41]
Multiplication would be the inverse operation of division. so it would be, 3 x 34 = 102
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answer: the numbers
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Find the dimensions of the rectangle
hoa [83]
(a) The sum of length and width is half the perimeter, so the breadth in terms of length (x) in cm will be
.. breadth = 34 -x


(b) Then the expression for the area (in cm^2) is
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.. (x -11)(x -23) = 0 . . . . . . . factor
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The dimensions of the rectangle are 11 cm by 23 cm.
7 0
3 years ago
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