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Scorpion4ik [409]
3 years ago
13

What is the value of x?

Mathematics
1 answer:
kaheart [24]3 years ago
7 0

Answer:

I dont know, She left me a long time ago.

Step-by-step explanation:

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Find the vertex for this function. f(x)=-2x^2+8x-11​
loris [4]

\bf \textit{vertex of a vertical parabola, using coefficients} \\\\ f(x)=\stackrel{\stackrel{a}{\downarrow }}{-2}x^2\stackrel{\stackrel{b}{\downarrow }}{+8}x\stackrel{\stackrel{c}{\downarrow }}{-11} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left( -\cfrac{8}{2(-2)}~~,~~-11-\cfrac{8^2}{4(-2)} \right)\implies \left( 2~~,~~-11+\cfrac{64}{8} \right) \\\\\\ (2~~,~~-11+8)\implies (2~~,~~-3)

3 0
3 years ago
Can you solve 4x2– 7 = 9
Andrei [34K]

Answer:

x=2

Step-by-step explanation:

plz trust me i know this

because 4(2)^2=16

16-7=9

plz mark brainliest

6 0
3 years ago
Read 2 more answers
The x and y intercept
Igoryamba
X intercept: (7/6, 0)
y intercept: (0, -7/3)
4 0
2 years ago
You estimate that there are 45 marbles in a jar. The actual amount is 82 marbles. Find the percent error. Round to the nearest t
Nataly_w [17]

Answer:

45.1

Step-by-step explanation:

The original amount is 82

But the wrong amount is 45

So we will have to calculate the percentage for the error

82-45

37

So %error= 37/82 ×100

=3700/82

=45.121~45.1( to nearest tenth)

So the final answer is 45.1%

6 0
4 years ago
What is the answer to 5a+3b=c
Margaret [11]

Answer:

a = -0.6b + 0.2c

Step-by-step explanation:

Simplifying

5a + 3b = c

Solving

5a + 3b = c

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-3b' to each side of the equation.

5a + 3b + -3b = -3b + c

Combine like terms: 3b + -3b = 0

5a + 0 = -3b + c

5a = -3b + c

Divide each side by '5'.

a = -0.6b + 0.2c

5 0
3 years ago
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