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2 years ago

Solve the quadratic equation 3x2 -5x - 7 = 0 to 3sf

Mathematics

1 answer:

Sauron [17]2 years ago

7 0

Answer:

2.57 or -0.907

Step-by-step explanation:

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Simplify eighth root of y squared

NARA [144]

Answer:

<u>The simplified expression is y raised to the 2/8 power</u>

Step-by-step explanation:

Let's recall that one of the properties of fractional exponents is:

x ^ a/b = ᵇ√x ᵃ

therefore,

⁸√y² = y ^2/8

<u>The simplified expression is y raised to the 2/8 power</u>

5 0

2 years ago

ſ x - 5y = -9( 4x + 4y = - 12Step 1 of 2: Determine if the point (-4,1) lies on both of the lines in the system of equations by

Phoenix [80]

Given:

$\begin{gathered} x-5y=-9\ldots\ldots(1) \\ 4x+4y=-12\ldots\text{.}\mathrm{}(2) \end{gathered}$

The given point is (-4,1)

Let's check the ordered pair (-4,1) in the first equation

$\begin{gathered} x-5y=-9 \\ (-4)-5(1)=-9 \\ -4-5=-9 \\ -9=-9 \end{gathered}$

Hence, (-4,1) is a solution of the first equation x-5y=-9.

Now, let's check (-4,1) in the second equation.

$\begin{gathered} 4x+4y=-12 \\ 4(-4)+4(1)=-12 \\ -16+4=-12 \\ -12=-12 \end{gathered}$

So, (-4,1) is a solution of the second equation 4x+4y=-12.

Hence, (-4,1) is a solution of both equation in the system, then it is a solution to the overall system.

3 0

5 months ago

3/5 -(-2/7) i need the value of the expression and work to show

trapecia [35]

The answer is 31/35 :)

7 0

2 years ago

What is the equation of a line that passes through the point (2, 7) and is perpendicular to the line whose equation is y=x4+5 ?

Valentin [98]

Attached a solution and showed work.

8 0

2 years ago

Helppppppp I wish I could have someone’s social media so I can just ask instead of posting questions all the time but!! Help ple

zzz [600]

Answer:

Step-by-step explanation:

as you see the smaller model is the same shape if you put the small model the same way the big one is you see the small model has a one where the big one has a nine so you times everything by nine because nine times one is 9 so you do that and see that the two is where the x is and times the 2 by nine and thats your answer

5 0

2 years ago

Read 2 more answers