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2 years ago

8

I can be here to help so ask for help

1 answer:

Artyom0805 [142]2 years ago

7 0

Answer:

ok thanks for being here

Step-by-step explanation:

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If 7 times a number is equal to 7 plus that number which of the following represents the equation needed to determine what that

HACTEHA [7]

The correct answer would be d
As it states seven times x is equal to x plus 7

GOOD LUCK!
BRAINLIEST?

8 0

3 years ago

The length of a rectangle is the sum of the width and one. The area direct angle 72 units. What’s the length, in units, of the r

insens350 [35]

Answer:

The length of the rectangle is of 9 units.

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

Area of a rectangle:

A rectangle has width $w$ and length $l$ . The area is the multiplication of these measures, that is:

$A = wl$

The length of a rectangle is the sum of the width and one.

This means that $l = w+1$ , or $w = l - 1$

The area direct angle 72 units. What’s the length, in units, of the rectangle

We want to find the length. So

$wl = 72$

$(l-1)l = 72$

$l^2 - l - 72 = 0$

Quadratic equation with $a = 1, b = -1, c = -72$ . So

$\bigtriangleup = (-1)^{2} - 4(1)(-72) = 289$

$l_{1} = \frac{-(-1) + \sqrt{289}}{2*(1)} = 9$

$l_{2} = \frac{-(-1) - \sqrt{289}}{2*(1)} = -8$

Since the length is a positive measure, the length of the rectangle is of 9 units.

8 0

2 years ago

The price of a video game was reduced from $70.00 to $40.00. By what percentage was the price of the

Sauron [17]

Answer:

43%

Step-by-step explanation:

(40-70) ÷ 70 = -30 ÷ 70 = -0.43 or -43%

Answer: The video game was reduced by 43%.

3 0

3 years ago

Which of the following inequalities are true? Select all of the correct

Scorpion4ik [409]

477>80 is correct

-4.5<3 this one is also correct

8 0

3 years ago

Jacpb began work at 7:15. He worked for 6 hours and 30 minutes. what time did he finish work?

zhuklara [117]

I believe 1:45
He started work at 7:15 just add 6 hours to 7 and half-hour to 15 minutes

6 0

3 years ago

Read 2 more answers