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aev [14]
3 years ago
11

8x = 3" align="absmiddle" class="latex-formula">
solve by factoring please. I really need help I have no clue how to solve by factoring like I forgot the steps so can u work the steps out also please
Mathematics
1 answer:
Nat2105 [25]3 years ago
5 0

Answer:

x = 4 + \sqrt{19}

Step-by-step explanation:

To solve by factoring, complete the square by dividing 8 from 8x in 2. Then square the result 4 to get 16. Add 16 to both sides.

x^2 -8x = 3\\\\x^2 - 8x + 16 = 3 + 16\\\\(x-4)^2 = 19

The equation is now factored. To solve, take the square root of both sides and solve for x.

\sqrt{(x-4)^2}  = \sqrt{19}\\\\x-4 = \sqrt{19} \\\\x = 4 + \sqrt{19}

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Answer:

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Step-by-step explanation:

none needed <3

8 0
3 years ago
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Determine which system below will produce infinitely many solutions.
mariarad [96]
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4 0
3 years ago
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LA BASE DE UN RECTANGULO ES 8 M MAYOR QUE LA ALTURA, EL AREA MIDE 65 METROS CUADRADOS ¿CUANTO MIDEN LA BASE Y ALTURA?
sp2606 [1]

Answer:

23 m and 15 m

Step-by-step explanation:

THE BASE OF A RECTANGLE IS 8 M GREATER THAN THE HEIGHT, THE AREA MEASURES 65 SQUARE METERS HOW MUCH DO THE BASE AND HEIGHT MEASURE?

Let the height of the rectangle is h.

Base = 8+h

Area of the rectangle, A = 65 m²

We need to find the base and height of the rectangle. The area of a rectangle is given by :

A = bh

So,

65=(8+h)\times h\\\\65=8h+h^2\\\\h^2+8h-65=0\\\\(h-5)(h+13)=0\\\\h=5\ m\ \text{and}\ x=-13\ m

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So, the base and height of the rectangle is 23 m and 15 m respectively.

4 0
3 years ago
Please someone help me
Katena32 [7]

Answer: B.) -4+3

Step-by-step explanation:

The model represents "-4+3" because the blue arrow (top) stops at 3 which is a positive and the red arrow (bottom) stops at -4 which is a negative.

8 0
3 years ago
The ratio of boys to girls in Anaya’s class is 10 to 15. There are 20 boys how many girls are there
ASHA 777 [7]

Answer:

30 girls

Step-by-step explanation:

10 x 2= 20

15x2=30

For every 10 boys there are 15 girls. since 20 is just 10 multiplied by 2 you can multiply 15 by 2

7 0
3 years ago
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