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Delicious77 [7]

2 years ago

9

Wes rode his bike 30 miles in 3 hours. What was his average rate of speed? 0.3 mph 10 mph 30 mph 90 mph

2 answers:

Ivanshal [37]2 years ago

7 0

10 mph. You’ll do 30 divided by 3 .

lidiya [134]2 years ago

3 0

The answer is 10mph because you divide 30 by 3hours. I hope this helps. Could I possibly get brainliest?

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jeremiah is eating at a restaurant he decides too tip the waiter 18% of his meal. if his meal cost $15.00 how much did he pay in

Slav-nsk [51]

Answer:

$17.70

Step-by-step explanation:

$15.00×18%=$2.70

$15.00+$2.70=$17.70

7 0

2 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

4(x - 1) = - 4 + 4x plz

N76 [4]

4(x-1)=-4+4x
4x-4=-4+4x
-4x -4x
-4=-4

Not sure what the problem was asking, but it’s solvable!

3 0

3 years ago

Read 2 more answers

Let w = 4. Enter >, <, or = to compare the expressions. 3w² + 1 10w + 8

Svetach [21]

Answer: ≥ without the line on the bottom.

Step-by-step explanation:

I am assuming the expression you are talking about are

$3w^{2} +1$ and $10w+8$ .

If we were to replace w with 4 and calculate, we will find the answer:

$3*4^{2} +1=3*16+1=48+1=49$

$10*4+8=40+8=48$

Since the first expression, $3w^{2} +1$ , is bigger than the second expression, the correct symbol to use is ≥ without the line on the bottom.

6 0

2 years ago

In a volcano, erupting lava flows continuously through a tube system about 11 kilometers to the sea. Assume a lava flow speed o

Vlada [557]

Answer:

22 hours

Step-by-step explanation:

0.5 km in 1 hr

1 km in 2 hr

11 km in 22 hr

7 0

2 years ago