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2 years ago

EZ MATHS AND POINTS!!!

Mathematics

2 answers:

svet-max [94.6K]2 years ago

7 0

Answer:

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable. x = 22

Paha777 [63]2 years ago

7 0

Answer:

Step-by-step explanation:

The diagonals are divided into 2 parts. They're both equal to each other in order to equal the total length.

Setting them up to equal each other is the easiest way to solve.

2x + 18 = x + 40.

Now with simple algebra, we can find the sidelength of x.

Subtract both sides by x.

x + 18 = 40

Subtract both sides by 18.

x = 22.

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NikAS [45]

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3 years ago

The difference of r and 3 (what is an algebraic expression for the word phrase)

Juli2301 [7.4K]

The answer is r-3 or 3-r

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mel-nik [20]

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3 years ago

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Find the x-intercept of the parabola with vertex (1,-13) and y-intercept (0,-11).

Advocard [28]

1. find equation

general solutions are:
$y = a x^{2} +bx +c \\ \\ \frac{dy}{dx} = 2ax +b$

for P(0,-11)

$-11 = 0a + 0b +c$ ⇒ $c = -11$

for p(1,-13)
$-13 = 1a + 1b -11 \\ a+b = -2$

and

$0 = 2a + b \\ b = -2a$

solve for a and b:
$a - 2a = -2 \\ a = 2 \\ b = -4$

the total equation is now:

$y = 2 x^{2} -4x -11$

To find the x-intercept set y=0 and solve for x

$0 = 2 x^{2} -4x-11$

4 0

3 years ago

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Translate the phrase into a variable expression: twice the sum of a number and 5

DIA [1.3K]

Answer:

'Twice the sum of a number and 5' can be translated into variable expression such as:

2(n + 5)

Step-by-step explanation:

Given the phrase

<em>Twice the sum of a number and 5</em>

First, let us breakdown the English Phrase

Let the number be = n

The sum of a number 'n' and 5 = n + 5

now, twice the sum of a number and 5 can be determined by multiplying (n+5) with 5.

Thus,

'<em>Twice the sum of a number and 5</em>' can be translated into variable expression such as:

2(n + 5)

7 0

3 years ago