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3 years ago

IS IT CORRECT ILL MARK YOU BRAINLIST

Mathematics

2 answers:

Alexus [3.1K]3 years ago

8 0

Answer:

Yes it is correct by brainly

Andrews [41]3 years ago

7 0

Step-by-step explanation:

1 is wrong, because if it says the sum of 5 times the number m and 12 that means its 5(m+12)=27

because its the sum and then 5 times that

2. You got the right answer, its five times x squared plus 2 is 22

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Which of the options represents the resulting equation after an equivalent expression for y is substituted into the second equat

Nina [5.8K]

Answer:

Correct choice is D

Step-by-step explanation:

Given the system of two equations:

$\left\{\begin{array}{l}4x+y=8\\6x-9y=12\end{array}\right..$

Fro mthe first equation

$y=8-4x.$

Substitute into the second equation $8-4x$ instead of y:

$6x-9(8-4x)=12.$

Note that $8-4x=-4x+8,$ then the second equation will take look

$6x-9(-4x+8)=12.$

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3 years ago

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Solving quadratic equation using the completing method.<br>(a).x^2+6x+1=0

irina1246 [14]

Answer:

$x = -3 + 2\sqrt2 \ , \ x = -3 - 2\sqrt2$

Step-by-step explanation:

x² + 6x + 1 = 0

a = 1 , b = 6 , c = 1

$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\\\\x = \frac{-6 \pm \sqrt{36-4}}{2}\\\\x=\frac{-6 \pm \sqrt{32}}{2}\\\\x= \frac{-6 \pm \sqrt{16 \times 2}}{2}\\\\x = \frac{-6 +4\sqrt2 }{2}\\\\x = -3 + 2\sqrt2 \ , \ x = -3 - 2\sqrt2$

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3 years ago

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Solve for ttt.<br> 2(t+1) = 102(t+1)=10

densk [106]

Answer:

2(t+1) = 102(t+1)=10

distribuite 2t+2=10

-8 2t=8

t=4

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2 years ago

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How would you change 2x^2=8x-3 into an equation you could solve using the quadratic formula

tatyana61 [14]

0=2x^2=8x+3
hope this helps

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3 years ago

The point (2, 3) is on the line given by which equation below?

love history [14]

Plug in the points and see if y and x are equal to each other.

(2,3)
y= x-1
3= 2-1
3= 1 (not the solution)

y=3x
3=3*3
3=9 (not the solution)

y=x+1
3=2+1
3=3 (solution) We can check to make sure.

y=-3x
3=-3*3
3=-9 (not the solution)

y=x+1 <em>is the answer.
</em>
I hope this helps!
~kaikers

5 0

3 years ago

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