All categories

3 years ago

HELP PLEASE IS IMPORTANT! Solve the equation by using the Quadratic Formula. 2x 92-5

Mathematics

1 answer:

notka56 [123]3 years ago

7 0

See attachment for answer and math work.

You might be interested in

David spent 10 days at summer camp. Each day he spent 4 hours at Arts and

horsena [70]

Answer: David made 120 drawings while at summer camp

4 0

3 years ago

The equation for a parabola has the form y=????x2+????x+cy=ax2+bx+c, where ????a, ????b, and cc are constants and ????≠0a≠0. Fin

d1i1m1o1n [39]

The equation for this parabola satisfies

$\begin{cases}a-b+c=9\\9a+3b+c=-19\\16a-4b+c=-12\end{cases}$

(in other words, plug in each given point's coordinates $(x,y)$ into the equation $y=ax^2+bx+c$ )

Now,

$(a-b+c)-(9a+3b+c)=9-(-19)\implies-8a-4b=28\implies2a+b=-7$

$(a-b+c)-(16a-4b+c)=9-(-12)\implies-15a+3b=21\implies5a-b=-7$

and

$(2a+b)+(5a-b)=(-7)+(-7)\implies7a=-14\imples a=-2$

$2(-2)+b=-7\implies b=-3$

$(-2)-(-3)+c=9\implies c=8$

So the equation of the parabola is

$y=-2x^2-3x+8$

4 0

3 years ago

An investment banker received a bonus and invested that money in two investments. He put a certain sum

Marianna [84]

Answer:

Step-by-step explanation:

An investment banker received a bonus and invested that money in two investments. He put a certain sum

of money in the first investment that returned 7% interest after one year. In the second investment he

Invested four times that of the first investment and got a 12% interest return after one year. If the total

interest from his investments after one year was $8,525.00, find the amount invested at each interest rate.

3 0

3 years ago

Chelsea uses 3 pounds of apples to make 4 cups. How many pounds of apple does she need to make 6 pints of applesauce

Gemiola [76]

Here, we know that 1 pint = 2 cups

Thus, 1 cup = $\frac{1 pints}{2}$

3 ponds apples are needed for 4 cups i.e. 3 ponds of apples = 4 cups of applesauce

1 cup of applesauce = $\frac{3 ponds}{4}$

Now, 6 pints will have 12 cups of applesauce

Multiplying this equation by 12 ⇒ 1 cup of applesauce = $\frac{3 ponds}{4}$

12 ×1 cup of applesauce = 12 × $\frac{3 ponds}{4}$

So, 12 cups of applesauce = 9 ponds of apple.

<u>Thus, 9 ponds of apple will be needed to make 6 pints of applesauce.</u>

7 0

3 years ago

Read 2 more answers

(ONLY NUMBER 4 ) please help ASAP ( Mark brainlist)

Anna11 [10]

Answer:

30.5

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers