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2 years ago

51x67+90/57/72= my daughter cant figure out this question

Mathematics

2 answers:

slamgirl [31]2 years ago

7 0

Answer:

3417.021

Step-by-step explanation:

Hope this helps.

Katarina [22]2 years ago

7 0

51x67=3417+90=3507/72=3418.25

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Complete the square for x^2+12x-5.

Setler [38]

Answer:

$x^2+12x-5=(x+6)^2-41$

Step-by-step explanation:

The given expression is $x^2+12x-5$

Comparing to $ax^2+bx+c$ , we have $a=1,b=12,c=-5$

We add and subtract $(\frac{b}{2a})^2$

$x^2+12x+6^2-6^2-5$

This implies that:

$\boxed{x^2+6x+36}-36-5$

The expression in the rectangle is a perfect square

$(x+6)^2-41$

Therefore $x^2+12x-5=(x+6)^2-41$

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2 years ago

Write the equation of each line in slope-intercept form. (If possible please show work)

Alik [6]

Answer:

y = 5x - 4

Step-by-step explanation:

Step 1: Write known variables

m = 5

y = 5x + b

Step 2: Find b

6 = 5(2) + b

6 = 10 + b

b = -4

Step 3: Rewrite equation

y = 5x - 4

7 0

3 years ago

The length of a rectangle is twice its width. If the perimeter of the rectangle is 54 in, find its area.

sergiy2304 [10]

Answer: 162 in²

Step-by-step explanation:

The factors of 54 are listed below:

18 and 9 are the two factors that when plugged into the equation below, equals 54:

$l+l+w+w=P$

This can also be written as:

$(l*2)+(w*2)=P$

So now that we have our two factors, we need to multiply them by each other to get our answer.

18 times 9 = 162

Our answer is 162

6 0

2 years ago

Read 2 more answers

Plz helppp..........!!!!!!!!!!!

Setler [38]

Answer:

~ 50 centimeters of the poster ~

Step-by-step explanation:

Let us plan out our steps, and solve for each:

1. Given the information, let us create a proportionality as such:

5 = 1 ⇒ x - centimeters of the poster

x 10

2. Now let us cross multiply, and solve through simple algebra for x:

5 * 10 = x,

x = 50 centimeters of the poster

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3 years ago

How do you put (x-4)^2 into Standard Form?

Leno4ka [110]

(x - 4)²
(x - 4)(x - 4)
x² - 4x - 4x + 16
x² - 8x +16

6 0

3 years ago