Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?

Answers

Answer 1

Answer: For future reference, use a * to show the multiplication sign because in math x is a variable. 7*2 = 9 + x

Now multiply 7*2= 14

14 = 9 + x

Now subtract 9 from both sides to isolate the x

5 = x or x= 5

Answer 2

Answer:

Answer:

Step-by-step explanation:

Related Questions

The sides of a triangle measures 6 inches, 8 inches, and 10 inches. The triangle has one 90° angle. What type of triangle is it?
Can someone help me with these three problems I don't know how to do them.
Y= x^3 + 64 Y=x^3 - 1000 Both need factored!
If someone eats 3/4 of granola bars per week, what fraction of a box do they eat in per day ? how many boxes do they eat in a year ?
11.68 - 0.48 ÷ (-1.6) =

HELP ASAP
HELP ASAP
HELP ASAP
Find the values of m and n.

Answers

I am not able to help you because the screen is black and I need to see the problem.

Write the expression as the sine, cosine, or tangent of an angle.sin 9x cos x - cos 9x sin x

Answers

Answer:

$\sin (8x)=\sin (9x) \cos (x) - \cos (9x)\sin (x)$

Step-by-step explanation:

Given : Expression $\sin (9x) \cos (x) - \cos (9x)\sin (x)$

To write : The given expression as the sine, cosine, or tangent of an angle?

Solution :

The given expression is in the form $\sin A\cos B-\cos A \sin B$

Using trigonometric identity,

$\sin (A-B)=\sin A\cos B-\cos A \sin B$

Substituting, A=9x , B=x

$\sin (9x-x)=\sin (9x) \cos (x) - \cos (9x)\sin (x)$

$\sin (8x)=\sin (9x) \cos (x) - \cos (9x)\sin (x)$

Therefore, The given expression is in the sin form sin(8x).

Answer:

sin 8x

Step-by-step explanation:

Multiplying a trinomial by a trinomial follows the same steps as multiplying a binomial by a trinomial. Determine the degree and maximum possible number of terms for the product of these trinomials: (x2 + x + 2)(x2 – 2x + 3).HOW DO I Explain how it arrived at your answer?

Answers

The correct answer is:

The degree of the polynomial is 4 and the maximum number of terms is 9.

Explanation:

Multiplying the terms of each trinomial that have the largest degree, we are multiplying x²(x²); this gives us x⁴. This means the degree of the trinomial, the largest degree of all terms, is 4.

Without multiplying through, we know we will multiply each term of the first trinomial by each term of the second one. This means that, if no terms are like to combine, we could have 3(3) = 9 terms.

For this case we have the following trinomial product:
$(x ^ 2 + x + 2) (x ^ 2 - 2x + 3)$
By doing distributive property we have:
$(x ^ 4 - 2x ^ 3 + 3x ^ 2) + (x ^ 3 - 2x ^ 2 + 3x) + (2x ^ 2 - 4x + 6)$
Grouping similar terms we have:
$x ^ 4 + x ^ 3 (-2 + 1) + x ^ 2 (3-2 + 2) + x (3-4) + (6)$
Adding terms of the same exponent we have:
$x ^ 4 - x ^ 3 + 3x ^ 2 - x + 6$
Answer:
$x ^ 4 - x ^ 3 + 3x ^ 2 - x + 6$
The degree of polynomial is equal to 4
The maximum number of terms is equal to 5.

Simplify: 43-2[6+(3+2)]

Answers

43-2(11)=43-22=21

The answer is 21

Hey there, 43-2(6+5)=43-(2)(11)=43-22=21. Therefore, the answer is 21.

What is 3727/100 in simplest form?

Answers

3727/100 is already in simplest form. If you divide the numerator (3727) by the denominator (100) you can receive the decimal form of the fraction, so 3720 divided by 100 equals 37.27, OR... 37 with a remainder of 27.

If you want the fraction in mixed number form, take the 37 with a remainder of 27. 37 will be the whole number and 27 will be the numerator, while the denominator stays 100. So, the mixed form will be 37 27/100.

If y = x - 6 were changed to y = x + 8, how would the graph of the new function compare with the first one?

Answers

The graph of the new function compared with the first one is the graph would be shifted upward.

What is the equation?

In algebra, an equation can be defined as a mathematical statement consisting of an equal symbol between two algebraic expressions that have the same value.

The given equations are;

y = x - 6

y = x + 8

To compare the equation substitute the value of x = 0 and solving for the value of y.

y = x - 6

x = 0

y = 0 -6

y = -6

And y = x + 8

y = 0 + 8

y = 8

So the function would be shifted upward.

Hence, the graph of the new function compared with the first one is the graph would be shifted upward.

Learn more about the equation here;

brainly.com/question/18604228

#SPJ2

The first one would have a y-intercept of (0,-6) and the second one would have a y-intercept of (0,8) and x (the slope) would still be the same.
y=x-6 would have points with (0,-6) (2,-4) (4,-2) (6,0)
y=x+8 would have points with (0,8) (-2,6) (-4,4) (-6,2)
In other words shifted up. Hope this helps!

Other Questions

Before adding or subtracting fractions, one must first get a common __________. A) Numerator B) Denominator C) Whole number D) Mixed number

Mrs. Ramiriz is making pies to sell at the local farmer’s market. It costs her $5 to make each pie, plus a one-time cost of $30 for baking supplies. She plans to sell the pies for $12 each. Which equation can be used to find the number of pies she needs to sell to break even?a.5x – 12x = 30 b.5x + 12x = 30 c.5x + 30 = 12x d.12x + 30 = 5x

Explain the answer for -10=m+-15

Simplify the expression below as much as possible.(7-6i) + (-1 + 4i) -(4-7i) A. 10 + 5i B. 2 - 9i C. 10-9i D. 2 +5i