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Molodets [167]
3 years ago
5

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Mathematics
1 answer:
larisa [96]3 years ago
3 0
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You might be interested in
Factor the quadratic by checking factor pairs.<br> -15x2 – 21x + 18<br> -15x2 – 218 + 19 = -3
d1i1m1o1n [39]

Answer:

-3(x + 2)(5x - 3)

Step-by-step explanation:

-15x² – 21x + 18

-3(5x² + 7x - 6)

-3[5x² + 10x - 3x - 6]

-3[5x(x + 2) - 3(x + 2)]

-3(x + 2)(5x - 3)

3 0
3 years ago
I don't know how to do question 12(b)
Virty [35]
Amy: x skirts Betty: 2x skirts Carol: (2x) + 7 skirts If Amy has 18 less than Carol, than Carol's equation minus 18 equals Amy's equation: [(2x) + 7] - 18 = x +18 +18 (2x) + 7 = x + 18 - 7 -7 2x = x + 11 -x -x x = 11 Input the solution for x into the girls equation to double check. Amy: 11 Betty: 2(x) 2(11) =22 Carol: (2x) + 7 22 + 7 =29 Does Amy have 18 less than Carol? Carol - Amy = 18 29 - 11 = 18 18 = 18 the problem is solved
5 0
3 years ago
Can you help me with this math problem? <br><br> (x+ 2) ^ 2 <br> (squared) <br><br> thankyou
Alex787 [66]
Answer: x^2 + 4x + 4

Explanation:
just expand, factor out, and add together.

(x+2)(x+2)

x • x = x^2
2x + 2x = 4x
2 • 2 = 4

x^2 + 4x + 4
8 0
3 years ago
A bakery sells 5 apple muffins for every 2 bran muffins sold.Which table shows this ratio?
Mama L [17]
The answer will be B

6 0
3 years ago
Lauren is sewing a quilt using fabric squares.
KengaRu [80]

Answer:

x^2 + 8x + 16

Step-by-step explanation:

Given length of square x + 4.

Area of square with side S is given by S^2.

Therefore are of square with side x + 4 is given by (x + 4)^2

Area of square = (x + 4)^2\\=>(x + 4)*(x + 4)\\=> x(x + 4) + 4(x + 4)\\=> x^2 + 4x + 4x + 4*4\\=>  x^2 + 8x + 16

Thus, x2 + 8x + 16 expression represents the area of a fabric square.

4 0
3 years ago
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