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3 years ago

Quadratic form of f(x)=(x+7)^2

Mathematics

1 answer:

Triss [41]3 years ago

3 0

Answer:

x^2 + 14x + 49

Step-by-step explanation:

Use the distributive property:

(x + 7)(x + 7) = x^2 + 7x + 7x + 49 = x^2 + 14x + 49

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A football is kicked at 40 yards away from a goal post that is 10 feet high. Its path is modeled by y = -0.03x 2 + 1.6x, where x

Ad libitum [116K]

$y(40)=-0.03(40^{2})+1.6(40)=16feet$
16>10

Yes, the ball clears the goal by 6 feet.

7 0

4 years ago

What is 5.405 rounded to the nearest whole number

Dafna11 [192]

5.405 rounded to the nearest whole number is 5 because .4 is less than .5

4 0

3 years ago

Read 2 more answers

Write an equation for each situation and then solve your equation.

motikmotik

Answer:

Q1. 20x = 200. The value of x is 10

Q2. 7 - 3x = 1. The value of x is 2.

Step-by-step explanation:

In order to find an equation, you have to let the number be any variable, such as m or n or z. So I will let the number be <em>x variable</em>. Then the question says a number is multiplied by 20 is equals to 200 :

Let number = x,

$x \times 20 = 200$

$20x = 200$

$20x \div 20 = 200 \div 20$

$x = 10$

Same for the next question. Given that a number multiplied by 3 :

Let number = x,

$x \times 3 = 3x$

Then subtracted by 7 equals to 1 :

$7 - 3x = 1$

$7 - 3x - 7 = 1 - 7$

$- 3x = - 6$

$- 3x \div - 3 = - 6 \div - 3$

$x = 2$

4 0

3 years ago

Five times the sum of a number and 3 is the same as 3 multiplied by 1 less than twice the number what is the number

mel-nik [20]

If n is a number.

"Five times the sum of a number and 3" is 5*(n+3).

"3 multiplied by 1 less than twice the number" is 3*(2n - 1).

And we have that

5*(n+3) = 3*(2n - 1)

5n + 15 = 6n - 3

5n - 6n = -3 - 15

-n = - 18

n= 18

5 0

3 years ago

He equations9x-10y=6, 8x-10y=-23, 9x+10y=-16 and 8x+10y=13 are shown on the graph below.

vesna_86 [32]

Answer:

(-2.3,0.5)

Step-by-step explanation:

Take the second equation we have y= (-16-9X)/10

Then, we will subtitute the value of y on the first equation

8X - 10(-16-9X/10)=-23

Because 10 is denominator, it will delate with the numeber 10 that is multipling the -16-9X. Then the equation is

8X-(-16-9X)=-23

then: 8x+16+9X=-23 So, 17x=-23-16 => X=-2.3

Then we put the value of X in the first equation so

9 (-2.3) -10y=-16 => 10y=-16+20.7

So, y=0.5

6 0

3 years ago

Read 2 more answers