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777dan777 [17]
3 years ago
12

PLEASE HELP ME!!! AWARDING BRAINLIEST!!! MATHEMATICS

Mathematics
2 answers:
Troyanec [42]3 years ago
8 0

6x-6

Step-by-step explanation:

add both equations together, then multiply that by 2

2*(2x+3+x-6)

Murrr4er [49]3 years ago
6 0

Answer:

6x and -6

Step-by-step explanation:

2x+3 * 2 4x+6

x-6 * 2 = 2x-12

4x+6 + 2x-12 = 6x and -6 inches

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Simplify the expression. Write your answer as a power.
Nezavi [6.7K]

Answer:

w^4

Step-by-step explanation:

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3 years ago
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What is 64x64? and I know if you use a calculator =)
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Step-by-step explanation:

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3 years ago
Prove algebraically that r = 10/2+2sinTheta is a parabola
Xelga [282]

Answer:

y =  -  \frac{ 1 }{10} {x}^{2}   +  \frac{5}{2}

Step-by-step explanation:

We want to prove algebraically that:

r =  \frac{10}{2 + 2 \sin \theta}

is a parabola.

We use the relations

{r}^{2}  =  {x}^{2}  +  {y}^{2}

and

y = r \sin \theta

Before we substitute, let us rewrite the equation to get:

r(2 + 2 \sin \theta) = 10

Or

r(1+  \sin \theta) = 5

Expand :

r+  r\sin \theta= 5

We now substitute to get:

\sqrt{ {x}^{2}  +  {y}^{2} }  + y = 5

This means that:

\sqrt{ {x}^{2}  +  {y}^{2} }=5 - y

Square:

{x}^{2}  +  {y}^{2} =(5 - y)^{2}

Expand:

{x}^{2}  +  {y}^{2} =25 - 10y +  {y}^{2}

{x}^{2}  =25 - 10y

{x}^{2}  - 25 =  - 10y

y =  -  \frac{ {x}^{2} }{10}  +  \frac{5}{2}

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4 0
3 years ago
Find two consecutive positive even integers such that the square of the first decreased by 64 equals 3 times the second.
IRINA_888 [86]

Answer:

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Step-by-step explanation:

let the consecutive even integers be n and n + 2 , then

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n² - 64 = 3n + 6 ( subtract 3n + 6 from both sides )

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(n - 10)(n + 7) = 0 ← in factored form

Equate each factor to zero and solve for n

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n + 7 = 0 ⇒ n = - 7

Since n must be a positive even integer then n = 10 and n + 2 = 10 + 2 = 12

The 2 numbers are 10 and 12

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