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2 years ago

HELPP FOR BRIANLEST PLEASS

Mathematics

2 answers:

Alex777 [14]2 years ago

6 0

Answer:

first one

Step-by-step explanation:

uh yeah the first one because it the second one to the original problem

Helen [10]2 years ago

3 0

Answer:

x + 2y = -4

Step-by-step explanation:

A system of linear equations has one solution when the graphs intersect at one point.

Rewrite y = (1/2)x + 2 into the same format as the possible solutions and compare:

y = (1/2)x + 2

multiply both sides by 2: 2y = x + 4

Subtract 2y from both sides: 0 = x - 2y + 4

Subtract -4 from both sides: -4 = x - 2y

⇒ x - 2y = -4

Compare:

2x - 4y = 4 ⇒ parallel
x + 2y = -4 ⇒ intersects at one point
x - 2y = -4 ⇒ equivalent
x - 2y = 4 ⇒ parallel

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Please help.........

Alex

Answer:

- $\frac{61}{11}$

Step-by-step explanation:

$\frac{x}{y}$ = $\frac{5}{6}$ ( cross- multiply )

6x = 5y ( divide both sides by 6 )

x = $\frac{5}{6}$ y

Then

$\frac{5x+6y}{5x-6y}$ ← substitute x = $\frac{5}{6}$ y into the expression

= $\frac{\frac{25}{6}y+6y }{\frac{25}{6}y-6y }$

= $\frac{\frac{61}{6}y }{-\frac{11}{6}y }$

= $\frac{\frac{61}{6} }{-\frac{11}{6} }$

= $\frac{61}{6}$ × - $\frac{6}{11}$

= - $\frac{61}{11}$

3 0

3 years ago

Multiply -10(-7x² + 5x)

tatiyna

Answer: 70x^2 -50x

Step-by-step explanation:

^ means exponent

7 0

2 years ago

Read 2 more answers

-4x + 2(5x - 6) = 6(x - 2)

Ugo [173]

Answer:

Sorry but this equation gives me 6x-12=6x-12

Step-by-step explanation:

Hope u don't mind me asking but have u tried it out yet and what did you get???

Is that a negative b4 4x??

8 0

3 years ago

Find the area of the polygon. A = __ft squared

Nataliya [291]

Answer:

28.5^2

Step-by-step explanation:

The formula is, b(base)+c(height)= b+c over 2. b+c/2.

B=19ft in this problem.

C=38ft

Knowing this, we can further simplify.

19+38/2

Now, we add 19 and 38.

(57)

57/2= 28.5

So, the anwser is 28.5^2

8 0

2 years ago

Simplify completely the quantity 4 times x to the third power plus 5 times x to the 2nd power plus 3 times x all over x. (2 poin

julia-pushkina [17]

We start with

$\dfrac{4x^3+5x^2+3x}{x}$

We can factor x at the numerator:

$\dfrac{x(4x^2+5x+3)}{x}$

So, assuming $x\neq 0$ (otherwise the expression would make no sense) we can simplify it:

$\dfrac{x(4x^2+5x+3)}{x} = 4x^2+5x+3$

This equation has no roots, so we can't simplify it any further.

5 0

3 years ago