All categories

1 year ago

The sketches show the graphs y=-x^2+16 and y=7

Mathematics

1 answer:

Tanzania [10]1 year ago

3 0

Answer:

7 = -x^2 +16

x^2 -16 = 7

x^2 -23 = 0

Using quadratic equation

x = -0 +- sqrt (23^2 - 4*1*23) / 2 * 1

x = sqrt (0 - -92) / 2

x = sqrt (92) / 2

x1 = 4.7958

x2 = -4.7958

(I tried to answer your question - even though you posted no question - AND you posted no graphics)

Step-by-step explanation:

You might be interested in

Subtract 5x−2 from −3x+4 .

Elanso [62]

Answer:

-8x +6

Step-by-step explanation:

5x−2 from −3x+4 .

This means take the 2nd number and subtract the 1st

-3x +4

-( 5x -2)

----------------

Distribute the negative sign

-3x +4

- 5x +2

----------------

-8x +6

5 0

3 years ago

Of the 6 people attending a seminar, 3 have red hair.

marin [14]

Answer:

1/2

Step-by-step explanation:

Total -- 6 people

3 people -- 3/6 = 1/2

Therefore, the answer is 1/2

3 0

2 years ago

Can someone PLEASE answer this and explain I really need help I’ll mark brainliest

svetlana [45]

Answer:

Michael = x÷7

lee = 2(x÷7)

(x÷7)+2(x÷7)

Step-by-step explanation:

since he earns x dollars every seven days, to get the amount he earns, you divide that amount by 7 and for Lee, she gets twice as much so you multiply Michael's amount by 2

7 0

2 years ago

When is a polynomial factored completely?

Jet001 [13]

Answer:

A polynomial is factored completely when nothing else in the expression can be factored

Example:

x^2+3x-4 completely factored looks like (x+4)(x-1)

8 0

3 years ago

Nikki just graduated from high school and would like to buy a car. If she received $3000 in graduation gifts from family friends

svetlana [45]

Answer:

$3450

Step-by-step explanation:

Here, P = $3000, N = 1.5 years, R = 10%

$SI = \frac{PNR}{100} \\ \\ SI = \frac{3000 \times 1.5 \times 10}{100} \\ \\ SI = 450 \\ \\$

Amount of down payment

= $3000 + $450

= $3450

7 0

3 years ago