All categories

3 years ago

Find the quadratic equation for y=x^2+6x-7

Mathematics

1 answer:

LenKa [72]3 years ago

5 0

Answer:

x = -1 or x = 7

Step-by-step explanation:

From my understanding, y will be zero and you have to find the value of x.

Step 1: Middle term break

y = x² + 6x - 7

x² + 6x - 7 = 0

x² - 7x + x - 7 = 0

Step 2: Solve

x(x-7) + 1(x-7) = 0

(x+1) (x-7) = 0

x = -1 or x = 7

Therefore, the value of x is either -1 or 7.

You might be interested in

Which of the sequences is an arithmetic sequence?

Alchen [17]

Answer:

Step-by-step explanation:

there is a constant pattern from one term to another

add -7 to get to the next term

3 0

3 years ago

Joanna has been saving for retirement for 40 years. She made monthly deposits of $275 and earned 5.6% annual interest, compounde

ryzh [129]

Joanna deposited $132000 and her interest amount is $359730.35

<u>Step-by-step explanation:</u>

Monthly deposit = $275

Interest = 5.6%

Time = 40 years

After 40 years her account balance = $491730.35

If she deposit $275 monthly then after 40 years she will have deposited ,

= 275 x 12 x 40

= $132000

The remaining is her interest amount.

Interest amount = 491730.35 - 132000

= $359730.35

Joanna deposited $132000 and her interest amount is $359730.35

6 0

3 years ago

Find the inverse of the function below. F(x) = -5x + 12

Bumek [7]

Answer:

Step-by-step explanation:

8 0

4 years ago

A new company opens and finds the profits from their first year in business is $24,000. They project the company's profits to in

Fiesta28 [93]

Answer:

$4406.7 is the profit.

explanation:

compound interest formula: $\sf \large\boxed{\sf P(1+\frac{r}{100})^n }$

using this formula:

$\rightarrow \ \sf \sf 24000(1+\dfrac{1.7}{100})^{10} }$

$\rightarrow \sf \ $ \sf 28406.7$

profit: $28406.7 - $24,000 = $4406.7

8 0

3 years ago

Can you help me with this, please?

Aloiza [94]

Answer:

y =x-12

Step-by-step explanation:

$(x_1, y_1) = (16, 4) \ \ \ and \ \ \ (x_2, y_2) = (17, 5)$

Equation of straight line is

$y-y_1 =\frac{y_2-y_1}{x_2-x_1} (x-x_1)$

$y-4 =\frac{5-4}{17-16} (x-16)$

$y =(x-16)+4$

$y =x-12$

3 0

3 years ago