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2 years ago

Simple Question: What is 5x6-3/9?

1 answer:

6 0

Solve the multiplication first then the division and the subtract them to get something like this:
$30- \frac{1}{3}
= \frac{89}{3}$
which simplifies to 29.7 (3 significant figure )

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Write down the quadratic equation whose roots are $x = -7$ and $x = 1,$ and the coefficient of $x^2$ is 1. Enter your answer in

pav-90 [236]

<h2>Steps:</h2>

So firstly, since we know that the coefficient of x² is 1, this means that this is our base equation:

y = x² + bx + c

Now, since we know that the roots are -7 and 1, set y = 0 and set x = -7 and 1 and simplify:

$0=(-7)^2+b(-7)+c\\0=49-7b+c\\-49=-7b+c\\\\0=1^2+b(1)+c\\0=1+b+c\\-1=b+c\\\\-49=-7b+c\\-1=b+c$

Now with this, we can set up a system of equations to solve for b and c. For this, I will be using the elimination method. For this, subtract the 2 equations:

$\begin{alignedat}{2}-49&=-7b+c\\-(-1&=b+c)\\-48&=-8b\end{alignedat}$

Now that the c variable has been eliminated we can solve for b. For this, divide both sides by -8 and your first part of your answer is b = 6.

Now that we know the value of b, plug it into either equation to solve for c:

$-49=-7(6)+c\\-49=-42+c\\-7=c\\\\-1=6+c\\-7=c$

<h2>Answer:</h2>

<u>Putting it together, your final answer is x² + 6x - 7 = 0.</u>

4 0

3 years ago

Please help !!!! it would really help me please answer right

Lynna [10]

Answer:

Step-by-step explanation:

hope this helps

4 0

2 years ago

People go to a carnival. Children tickets cost $4.50 and adult tickets cost $7.25. If they bought 28 tickets and spent $59, how

xenn [34]

Answer:

Step-by-step explanation:

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2 years ago

Line m passes through points (3, 15) and (10,9). Line n passes through points (2,9) and (9, 3). Are line m and line n parallel p

enot [183]

Answer: they are parallel

Step-by-step explanation:

find slope of line m:

Use y2-y1/x2-x1

your m equation --> 9-15/10-3 which makes the slope of m = -6/7

find slope of line n:

Use y2-y1/x2-x1

your n equation --> 3-9/9-2 which makes the slope of n = -6/7

The slopes are the same, therefore line m and line n are parallel.

6 0

2 years ago

Which scatterplot shows a nonlinear association?

Lubov Fominskaja [6]

Answer:

Step-by-step explanation:

B shows a parabola, which is a quadratic equation, not a linear one.

5 0

2 years ago