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2 years ago

Please help me if so thank you

Mathematics

1 answer:

posledela2 years ago

6 0

Add 5 each time so A2 is going to be positive 1 A3 will be positive 6

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Can someone please help with the last problem

Brut [27]

Answer:

18x +9h

Step-by-step explanation:

Such problems are tedious, but not difficult. The trick is to avoid making mistakes in the algebra.

$\dfrac{f(x+h)-f(x)}{h}=\dfrac{(9(x+h)^2)-(9x^2)}{h}\\\\=\dfrac{9(x^2+2xh+h^2)-9x^2}{h}=\dfrac{18xh+9h^2}{h}=\boxed{18x+9h}$

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1 year ago

If AE=6x-55 and EC=3x-16, find DB. (Hint: Find x first and then substitute.)

erica [24]

Given:

Given that ABCD is a rectangle.

The diagonals of the rectangle are AC and DB.

The length of AE is (6x -55)

The length of EC is (3x - 16)

We need to determine the length of the diagonal DB.

Value of x:

The value of x can be determined by equating AE and EC

Thus, we have;

$AE=EC$

Substituting the values, we get;

$6x-55=3x-16$

$3x-55=-16$

$3x=39$

$x=13$

Thus, the value of x is 13.

Length of AC:

Length of AE = $6(13)-55=78-55=23$

Length of EC = $3(13)-16=39-16=23$

Thus, the length of AC can be determined by adding the lengths of AE and EC.

Thus, we have;

$AC=AE+EC$

$AC=23+23$

$AC=46$

Thus, the length of AC is 46.

Length of DB:

Since, the diagonals AC and DB are perpendicular to each other, then their lengths are congruent.

Hence, we have;

$AC=DB$

$46=DB$

Thus, the length of DB is 46.

6 0

2 years ago

Mrs Rivera is planting flowers in her 1-meter long rectangular plant box.She divided the plant box into sections meters in lengt

Setler [38]

I hope I have been able to help

6 0

2 years ago

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Complete the factorization, x^2+5x+6=(x+ )(x+2)

Alborosie

Answer:

$x^{2} +5x +6= (x+3)(x+2)$

Step-by-step explanation:

$x^{2} +5x+6\\=x^{2} +2x+3x+6\\=x(x+2)+3(x+2)\\=(x+2)(x+3)$

6 0

2 years ago

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What is the measure of angles 1, 2, and 3?

stellarik [79]

Answer:

1= 70

2= 65

3= 95

For 1, just solve 180-(65+45) and then for 2, subtract #1 and 45 from 180. Then just solve for #3 by using 180-(#2+20)

4 0

2 years ago

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